Alphanume

API Documentation

Reference for every Alphanume dataset endpoint. All endpoints share the same base URL and authentication scheme — pick a dataset from the sidebar to jump to its reference.

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Getting Started

Alphanume exposes every dataset through a single, query-parameter–based REST API. This page walks through account setup, authentication, and the request pattern shared by all endpoints.

Create an Account

To access the Alphanume API, create an account at the sign-up page. After registering and setting your password, your API key will be emailed to you automatically.

Base URL

All Alphanume API requests are made against:

https://api.alphanume.com/v1

Example Request

The API follows a simple, query-parameter–based request structure. Below is a sample request to the Historical Market Cap endpoint:

Python
import requests

url = "https://api.alphanume.com/v1/historical-market-cap"
params = {
    "ticker": "AAPL",
    "date": "2026-02-06",
    "api_key": "alp_abc123"
}

response = requests.get(url, params=params)
data = response.json()

print(data)
cURL
curl "https://api.alphanume.com/v1/historical-market-cap?ticker=AAPL&date=2026-02-06&api_key=alp_abc123"

Header-Based Auth

You can also pass your API key via the X-API-Key header instead of a query parameter.

cURL
curl "https://api.alphanume.com/v1/historical-market-cap?ticker=AAPL&date=2026-02-06" \
  -H "X-API-Key: alp_abc123"

Response Format

Responses are returned in JSON and are designed to be immediately usable in research pipelines.

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-02-06",
      "ticker": "AAPL",
      "market_cap": 4109599296360.0,
      "shares_outstanding": 14776353000.0
    }
  ]
}

General Pattern

All Alphanume endpoints follow the same structure:

GET /v1/{endpoint}?param1=value&param2=value&api_key=alphanume_api_key

This makes it easy to programmatically construct requests across datasets without learning new schemas.

Rate Limits

  • Pro tier: 600 requests per minute
  • Exceeding the limit returns HTTP 429

Next Steps

  • Explore the available datasets in the sidebar
  • Review authentication and API key setup
  • Integrate directly into your backtests or production systems

Next-Day Movers

GET /v1/next-day-movers

The Next-Day Movers dataset provides a daily, model-ranked collection of equities most likely to experience large price moves in the following trading session.

Each observation contains one of the top names selected from a universe of liquid optionable equities, based on a predictive model designed to identify securities with elevated next-day realized movement potential. Behind the scenes, the model evaluates features such as implied volatility, realized volatility, and related volatility structure information to rank candidates by expected next-day movement.

All observations are stored historically and remain fixed once published, allowing the dataset to be used safely in systematic research and backtesting workflows without lookahead bias.

Why it's useful

  • Identify equities most likely to experience outsized next-day moves
  • Build directional or non-directional volatility trading strategies
  • Screen for high-movement candidates before the next session opens
  • Study the relationship between implied volatility, realized volatility, and future movement
  • Backtest systematic workflows built around next-day mover selection

Endpoint

GET /v1/next-day-movers

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/next-day-movers"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/next-day-movers?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date — observations for a single trading date (YYYY-MM-DD).
  • date_gte / date_lte / date_gt / date_lt — filter by date range. Any logically valid combination is accepted.

If no date filters are provided, all available historical observations are returned.

Response Format

JSON
{
  "count": 2,
  "data": [
    { "date": "2026-03-09", "ticker": "AAOI", "return": 8.92, "absolute_move": 8.92 },
    { "date": "2026-03-09", "ticker": "FIGR", "return": 21.29, "absolute_move": 21.29 }
  ]
}

Forward Return Availability

For the most recent observation date, return and absolute_move will appear as null. These fields represent realized movement during the following trading session — until a full trading day has completed after the selection date, the outcome cannot yet be calculated. Once the next session has closed, the values are populated automatically and remain fixed thereafter.

JSON
// Most recent date
{ "date": "2026-03-10", "ticker": "NVDA", "return": null, "absolute_move": null }

// Historical observation
{ "date": "2026-03-09", "ticker": "FIGR", "return": 21.29, "absolute_move": 21.29 }

Response Fields

FieldTypeDescription
datestringObservation date (YYYY-MM-DD)
tickerstringEquity ticker symbol
returnnumberNext trading session return for the selected ticker
absolute_movenumberAbsolute value of the next trading session return

Notes on Data Behavior

  • New selections are generated daily at 3:30 PM (America/New_York Time)
  • Historical observations are stored point-in-time
  • Once published, observations are not retroactively altered
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by date DESC

Quant Galore Momentum Index

GET /v1/quant-galore-momentum-index

The Quant Galore Momentum Index provides the historical and live constituents of a rules-based, cross-sectional equity momentum strategy.

Each observation represents a stock included in the 10-stock monthly basket on a specific rebalance date, along with its rank within that basket. This dataset is designed for systematic traders, researchers, and allocators who want clean, point-in-time access to a maintained momentum index without reconstructing the full ranking pipeline.

Why it's useful

  • Replicate or track the Quant Galore Momentum strategy
  • Run independent performance attribution or turnover analysis
  • Study cross-sectional momentum concentration effects
  • Measure post-rebalance drift and decay
  • Build overlays (options, hedging, leverage) on top of a rules-based equity core

Index Overview

  • Universe: Deeply liquid U.S. equities with at least six consecutive weeks of listed weekly option expirations
  • Construction: Cross-sectional momentum ranking
  • Basket Size: Top 10 stocks
  • Rebalance Frequency: Monthly
  • Ranking: Highest momentum = rank 1

The dataset reflects the actual basket at that specific date, not a reconstructed or retroactively altered list.

Endpoint

GET /v1/quant-galore-momentum-index

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/quant-galore-momentum-index"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/quant-galore-momentum-index?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date (optional) — return basket constituents for a single rebalance date (YYYY-MM-DD). Cannot be combined with range parameters.
  • date_gte / date_lte / date_gt / date_lt (optional) — filter by rebalance date range. Any logically valid combination is accepted.

Validation rules:

  • date_lte must be ≥ date_gte
  • date_lte must be > date_gt
  • date_lt must be > date_gte

If no date filters are provided, all available historical observations are returned (subject to tier-based limits).

Response Format

JSON
{
  "count": 970,
  "data": [
    { "date": "2026-02-02", "ticker": "BE", "rank": 10 },
    { "date": "2026-02-02", "ticker": "IREN", "rank": 9 }
  ]
}

Response Fields

FieldTypeDescription
datestringRebalance date (YYYY-MM-DD)
tickerstringEquity ticker included in the basket
rankintegerMomentum rank within the 10-stock basket (1 = highest momentum)

Notes on Data Behavior

  • Constituents update monthly upon rebalance at 4:05 PM (America/New_York Time)
  • Each rebalance date contains exactly 10 stocks
  • Rankings are deterministic and stored historically
  • Historical baskets remain fixed once published
  • Results are ordered by date DESC
  • Dates are returned in YYYY-MM-DD format
  • Invalid date formats return a 400 response
  • Mixing date with range parameters returns a 400

S&P 500 0-DTE Strike Band

Pro
GET /v1/spx-0dte-strike-band

The S&P 500 0-DTE Strike Band dataset provides a daily, model-derived strike range representing the expected intraday price bounds for the S&P 500 index during the current trading session.

Each observation contains a lower and upper strike level that define the range in which the index is expected to remain with high probability through the close of the same-day (0-DTE) options cycle. The band is calculated using forward-looking implied probability distributions and broader market risk factors, and is designed to assist traders in strike selection and risk management for intraday option strategies.

All observations are point-in-time and stored historically. Once published, values are never retroactively altered, allowing the dataset to be used safely in systematic research and backtesting workflows.

Why it's useful

  • Identify statistically informed strike levels for same-day SPX options
  • Structure intraday spreads, condors, or volatility-selling strategies
  • Quantify expected index movement using implied probability information
  • Filter or validate discretionary strike selection decisions
  • Analyze historical containment probabilities for intraday index ranges

Endpoint

GET /v1/spx-0dte-strike-band

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Pro tier required. This endpoint is not available on Free / Trial accounts. Requests authenticated under a non-Pro tier will return a 403 PRO_TIER_REQUIRED error.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/spx-0dte-strike-band"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/spx-0dte-strike-band?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date — strike band for a single trading date (YYYY-MM-DD).
  • date_gte / date_lte / date_gt / date_lt — filter by date range. Any logically valid combination is accepted.

If no date filters are provided, all available historical observations are returned (subject to tier-based limits).

Response Format

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-03-05",
      "lower_strike": 6740,
      "upper_strike": 6880,
      "instrument": "SPX"
    }
  ]
}

Response Fields

FieldTypeDescription
datestringObservation date (YYYY-MM-DD)
lower_strikeintegerLower strike boundary of the expected intraday range
upper_strikeintegerUpper strike boundary of the expected intraday range
instrumentstringUnderlying index instrument

Strike Band Definition

The lower_strike and upper_strikevalues represent the model-derived strike range within which the S&P 500 index is expected to remain through the close of the same-day options session. The band is calculated using forward-looking implied probability distributions, realized volatility data, and broader market risk factors. Strikes are rounded to the nearest listed SPX option increment.

Notes on Data Behavior

  • New observations are published daily at 10:30 AM (America/New_York Time)
  • Values are point-in-time and reflect information available at calculation time
  • Historical strike bands remain fixed once published
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by date DESC

S&P 500 Risk Regime

GET /v1/sp500-risk-regime

The S&P 500 Risk Regime dataset provides a daily, point-in-time binary classification of prevailing equity market conditions.

Each observation reflects whether the S&P 500 was classified as being in a risk-off (1) or risk-on (0) regime on that date. The dataset is designed for systematic traders and researchers who require a stable, reproducible market state signal for filtering, sizing, or regime-aware modeling.

Why it's useful

  • Filter strategies during elevated volatility or selloff regimes
  • Dynamically scale position size based on market conditions
  • Improve risk-adjusted returns via regime-aware allocation
  • Segment backtests into bull vs stress environments
  • Study behavioral or factor performance across volatility states

Endpoint

GET /v1/sp500-risk-regime

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/sp500-risk-regime"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/sp500-risk-regime?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date (optional) — return regime classification for a single date (YYYY-MM-DD).
  • date_gte / date_lte / date_gt / date_lt (optional) — filter by date range. Any logically valid combination is accepted.

If no date filters are provided, all available historical observations are returned (subject to tier-based limits).

Response Format

JSON
{
  "count": 522,
  "data": [
    { "date": "2026-02-23", "risk_regime": 1 }
  ]
}

Response Fields

FieldTypeDescription
datestringObservation date (YYYY-MM-DD)
risk_regimeintegerBinary regime classification (1 = Risk-Off, 0 = Risk-On)

Regime Definition

1 → Risk-Off: elevated volatility and/or stress conditions. Historically associated with defensive positioning and higher downside risk.

0 → Risk-On: lower volatility and constructive equity conditions. Historically associated with trend persistence and risk-seeking behavior.

The classification is derived from forward-looking implied volatility metrics and is stored as a fixed daily regime label. Historical values are not retroactively altered.

Notes on Data Behavior

  • New observations are updated daily at 10:10 AM (America/New_York Time)
  • Dates are returned as YYYY-MM-DD
  • Values are point-in-time
  • Historical regime labels remain fixed once published
  • Results are ordered by date DESC

IV/HV Premium

GET /v1/iv-hv-premium

The IV/HV Premium dataset answers a single recurring question for every liquid US equity: are this name's options rich or cheap right now? For each ticker and trading day it pairs the annualized at-the-money implied volatility of the listed expiry nearest ~30 calendar days (iv) against the annualized 30-trading-day close-to-close realized volatility (hv).

From that pair it derives the volatility risk premium two ways — the spread (iv − hv) and the ratio (iv / hv, where > 1 = rich and < 1 = cheap) — and adds daily cross-sectional ranks and z-scores so a value can be read both against the name's own history and against the rest of the universe that day.

Every past date is settled and fixed, so the series can be used in systematic research and backtesting without lookahead bias. Volatilities are annualized; notional_volume (underlying volume × VWAP) is carried as a liquidity reference.

Why it's useful

  • Screen the universe for the richest or cheapest options by iv_hv_ratio on any given day
  • Rank names cross-sectionally with the daily percentile and z-score fields for relative-value vol trades
  • Size a vol-selling or vol-buying book by how far implied sits above or below realized
  • Backtest premium-capture strategies on a point-in-time, no-lookahead history

Endpoint

GET /v1/iv-hv-premium

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.
Real-time intraday layer.Today's row is updated continuously through the session and settled after the close. is_final = 0 marks a provisional intraday value (refreshed roughly every 30 minutes, 09:30–16:00 ET); is_final = 1 marks the settled, authoritative value (written ~16:30 ET). Every past date is always 1. By default the endpoint returns the latest value per date/ticker(today's provisional during the session); pass only_final=true to return settled rows only. Exactly one row per date/ticker is guaranteed.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/iv-hv-premium"
params = {
    "date": "2026-06-12",
    "min_ratio_rank": 0.9,
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/iv-hv-premium?date=2026-06-12&min_ratio_rank=0.9&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, all tickers are returned.
  • date (optional) — exact trading date (YYYY-MM-DD). Cannot be combined with date range parameters.
  • min_iv_hv_ratio / max_iv_hv_ratio (optional, float) — screen on the iv / hv ratio.
  • min_ratio_rank (optional, float 0–1) — floor on iv_hv_ratio_ranked; e.g. 0.9 returns the richest decile that day.
  • only_final (optional, true/1/yes) — return settled rows only. Default false.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Response Fields

FieldTypeDescription
datestringTrading date (YYYY-MM-DD)
tickerstringUnderlying symbol
ivfloatAnnualized ~30d ATM implied vol
hvfloatAnnualized 30-trading-day realized vol
iv_hv_spreadfloativ − hv
iv_hv_ratiofloativ / hv (> 1 = rich, < 1 = cheap)
iv_rankedfloatDaily cross-sectional percentile rank of iv (0–1)
hv_rankedfloatDaily cross-sectional percentile rank of hv (0–1)
iv_hv_spread_rankedfloatDaily cross-sectional percentile rank of the spread (0–1)
iv_hv_ratio_rankedfloatDaily cross-sectional percentile rank of the ratio (0–1)
iv_zfloatDaily cross-sectional z-score of iv
hv_zfloatDaily cross-sectional z-score of hv
iv_hv_spread_zfloatDaily cross-sectional z-score of the spread
iv_hv_ratio_zfloatDaily cross-sectional z-score of the ratio
notional_volumefloatUnderlying volume × VWAP (liquidity reference)
notional_volume_rankedfloatDaily cross-sectional percentile rank of notional volume (0–1)
notional_volume_zfloatDaily cross-sectional z-score of notional volume
days_to_expintegerCalendar days to the expiry used (~30)
exp_datestringExpiry date used for the IV (YYYY-MM-DD)
atm_strikefloatStrike of the ATM call used
spotfloatUnderlying fair value used in the IV solve
is_finalinteger0 = provisional intraday, 1 = settled. Every past date is 1.
last_updatedstring | nullET timestamp of the row's last write (YYYY-MM-DD HH:MM:SS). Null on legacy pre-real-time rows.

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-06-12",
      "ticker": "AAPL",
      "iv": 0.1795,
      "hv": 0.2333,
      "iv_hv_spread": -0.0538,
      "iv_hv_ratio": 0.769,
      "iv_ranked": 0.22,
      "hv_ranked": 0.61,
      "iv_hv_spread_ranked": 0.18,
      "iv_hv_ratio_ranked": 0.31,
      "iv_z": -0.42,
      "hv_z": 0.55,
      "iv_hv_spread_z": -0.60,
      "iv_hv_ratio_z": -0.48,
      "notional_volume": 8410000000,
      "notional_volume_ranked": 0.99,
      "notional_volume_z": 4.1,
      "days_to_exp": 31,
      "exp_date": "2026-07-17",
      "atm_strike": 290,
      "spot": 291.36,
      "is_final": 0,
      "last_updated": "2026-06-12 15:31:04"
    }
  ]
}

Notes on Data Behavior

  • One row per ticker per trading date over a point-in-time liquid US-equity universe
  • Today's row is provisional intraday (is_final = 0) and settled after the close (is_final = 1, ~16:30 ET)
  • Volatilities are annualized; typical iv/hv ≈ 0.15–0.80
  • Cross-sectional ranks and z-scores are computed across that day's universe
  • Once a date settles, its values are fixed and not retroactively altered
  • Results are ordered by date DESC, ticker ASC

IV/HV Rank (52-Week)

GET /v1/iv-rank

The IV/HV Rank dataset answers is volatility high or low for this name?For each ticker and trading day it places the current ~30-day implied vol and 30-day realized vol within that name's own trailing 52-week (strict 252-observation) range, as both a 0–100 rank and a 0–100 percentile.

Rank measures position within the year's high–low band; percentile measures the share of the trailing year that traded below the current value:

  • *_rank = (value − 52w_low) / (52w_high − 52w_low) × 100
  • *_percentile = share of trailing-year observations below the current value × 100

The dataset is derived from the same iv/hv series as IV/HV Premium, over the same universe and update cadence. A ticker appears only once it has a full year of history; daily cross-sectional rank and z-score fields add context against the rest of the universe.

Why it's useful

  • Find names whose implied vol is historically cheap (low IV Rank) or expensive (high IV Rank) for premium timing
  • Compare IV Rank against HV Rank to spot where implied is stretched relative to a name's own realized regime
  • Screen for high-percentile vol candidates with min_iv_percentile
  • Build mean-reversion or breakout signals on a name-relative, point-in-time vol measure

Endpoint

GET /v1/iv-rank

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.
Real-time intraday layer.Today's row is updated continuously through the session and settled after the close. is_final = 0 marks a provisional intraday value (refreshed roughly every 30 minutes, 09:30–16:00 ET); is_final = 1 marks the settled value (written ~16:30 ET). Every past date is always 1. By default the endpoint returns the latest value per date/ticker; pass only_final=true to return settled rows only. Exactly one row per date/ticker is guaranteed.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/iv-rank"
params = {
    "ticker": "AAPL",
    "min_iv_rank": 80,
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/iv-rank?ticker=AAPL&min_iv_rank=80&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, all tickers are returned.
  • date (optional) — exact trading date (YYYY-MM-DD). Cannot be combined with date range parameters.
  • min_iv_rank / max_iv_rank (optional, float 0–100) — screen on 52w IV Rank.
  • min_hv_rank / max_hv_rank (optional, float 0–100) — screen on 52w HV Rank.
  • min_iv_percentile (optional, float 0–100) — floor on 52w IV Percentile.
  • only_final (optional, true/1/yes) — return settled rows only. Default false.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Response Fields

FieldTypeDescription
datestringTrading date (YYYY-MM-DD)
tickerstringUnderlying symbol
ivfloatCurrent annualized ~30d ATM implied vol
iv_rankfloat52-week IV Rank (0–100)
iv_percentilefloat52-week IV Percentile (0–100)
iv_52w_highfloatTrailing-year high of iv
iv_52w_lowfloatTrailing-year low of iv
iv_52w_medianfloatTrailing-year median of iv
hvfloatCurrent annualized 30-trading-day realized vol
hv_rankfloat52-week HV Rank (0–100)
hv_percentilefloat52-week HV Percentile (0–100)
hv_52w_highfloatTrailing-year high of hv
hv_52w_lowfloatTrailing-year low of hv
hv_52w_medianfloatTrailing-year median of hv
n_obs_52wintegerObservations in the trailing-year window (= 252 once warm)
notional_volumefloatUnderlying volume × VWAP (liquidity reference)
iv_rank_cs_rankedfloatDaily cross-sectional percentile of IV Rank (0–1)
iv_rank_cs_zfloatDaily cross-sectional z-score of IV Rank
hv_rank_cs_rankedfloatDaily cross-sectional percentile of HV Rank (0–1)
hv_rank_cs_zfloatDaily cross-sectional z-score of HV Rank
is_finalinteger0 = provisional intraday, 1 = settled. Every past date is 1.
last_updatedstring | nullET timestamp of the row's last write (YYYY-MM-DD HH:MM:SS). Null on legacy pre-real-time rows.

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-06-12",
      "ticker": "AAPL",
      "iv": 0.1795,
      "iv_rank": 31.4,
      "iv_percentile": 28.0,
      "iv_52w_high": 0.42,
      "iv_52w_low": 0.135,
      "iv_52w_median": 0.21,
      "hv": 0.2333,
      "hv_rank": 58.2,
      "hv_percentile": 61.0,
      "hv_52w_high": 0.39,
      "hv_52w_low": 0.11,
      "hv_52w_median": 0.20,
      "n_obs_52w": 252,
      "notional_volume": 8410000000,
      "iv_rank_cs_ranked": 0.34,
      "iv_rank_cs_z": -0.41,
      "hv_rank_cs_ranked": 0.62,
      "hv_rank_cs_z": 0.39,
      "is_final": 0,
      "last_updated": "2026-06-12 15:31:04"
    }
  ]
}

Notes on Data Behavior

  • A ticker appears only once it has a full year (252 observations) of iv-hv-premium history
  • Today's row is provisional intraday (is_final = 0) and settled after the close (is_final = 1, ~16:30 ET)
  • Rank uses the high–low band; percentile uses the share of the trailing year below the current value
  • Once a date settles, its values are fixed and not retroactively altered
  • Results are ordered by date DESC, ticker ASC

Vol-of-Vol Index

GET /v1/vol-of-vol

The Vol-of-Vol Index answers whose volatility is most unstable? For each ticker and trading day it measures the coefficient of variation (standard deviation ÷ mean) of that name's own ~30-day implied vol and 30-day realized vol over a trailing 21 observations (~1 month). Higher values mean the name's volatility is itself more variable.

The measure is dimensionless, so it is directly comparable across names, and a daily cross-sectional ranking surfaces the most vol-unstable names on any given day. It is derived from the same iv/hv series as IV/HV Premium, over the same universe and update cadence.

The first ~month of each ticker's history is absent while the 21-observation window warms up.

Why it's useful

  • Rank the universe by which names have the most unstable implied or realized vol on a given day
  • Filter for stable-vol names (low vol-of-vol) when a strategy depends on a steady vol regime
  • Flag names whose vol is churning ahead of catalysts or regime shifts
  • Combine with IV/HV Premium and IV/HV Rank for a fuller picture of a name's vol behavior

Endpoint

GET /v1/vol-of-vol

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.
Real-time intraday layer.Today's row is updated continuously through the session and settled after the close. is_final = 0 marks a provisional intraday value (refreshed roughly every 30 minutes, 09:30–16:00 ET); is_final = 1 marks the settled value (written ~16:30 ET). Every past date is always 1. By default the endpoint returns the latest value per date/ticker; pass only_final=true to return settled rows only. Exactly one row per date/ticker is guaranteed.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/vol-of-vol"
params = {
    "min_iv_vov_rank": 0.9,
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/vol-of-vol?min_iv_vov_rank=0.9&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, all tickers are returned.
  • date (optional) — exact trading date (YYYY-MM-DD). Cannot be combined with date range parameters.
  • min_iv_vov / max_iv_vov (optional, float ≥ 0) — screen on raw implied vol-of-vol.
  • min_hv_vov / max_hv_vov (optional, float ≥ 0) — screen on raw realized vol-of-vol.
  • min_iv_vov_rank / min_hv_vov_rank (optional, float 0–1) — daily percentile floor on the implied / realized vol-of-vol rank.
  • only_final (optional, true/1/yes) — return settled rows only. Default false.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Response Fields

FieldTypeDescription
datestringTrading date (YYYY-MM-DD)
tickerstringUnderlying symbol
ivfloatLatest annualized ~30d ATM implied vol (carried from source)
iv_vovfloatCoefficient of variation of iv over the trailing 21 obs (dimensionless)
iv_mean_21floatMean of iv over the trailing 21 obs
iv_std_21floatStandard deviation of iv over the trailing 21 obs
hvfloatLatest annualized 30-trading-day realized vol (carried from source)
hv_vovfloatCoefficient of variation of hv over the trailing 21 obs (dimensionless)
hv_mean_21floatMean of hv over the trailing 21 obs
hv_std_21floatStandard deviation of hv over the trailing 21 obs
n_obs_vovintegerObservations in the window (= 21 once warm)
notional_volumefloatUnderlying volume × VWAP (liquidity reference)
iv_vov_cs_rankedfloatDaily cross-sectional percentile of implied vol-of-vol (0–1)
iv_vov_cs_zfloatDaily cross-sectional z-score of implied vol-of-vol
hv_vov_cs_rankedfloatDaily cross-sectional percentile of realized vol-of-vol (0–1)
hv_vov_cs_zfloatDaily cross-sectional z-score of realized vol-of-vol
is_finalinteger0 = provisional intraday, 1 = settled. Every past date is 1.
last_updatedstring | nullET timestamp of the row's last write (YYYY-MM-DD HH:MM:SS). Null on legacy pre-real-time rows.

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-06-12",
      "ticker": "AAPL",
      "iv": 0.1795,
      "iv_vov": 0.084,
      "iv_mean_21": 0.1822,
      "iv_std_21": 0.0153,
      "hv": 0.2333,
      "hv_vov": 0.121,
      "hv_mean_21": 0.2210,
      "hv_std_21": 0.0267,
      "n_obs_vov": 21,
      "notional_volume": 8410000000,
      "iv_vov_cs_ranked": 0.41,
      "iv_vov_cs_z": -0.22,
      "hv_vov_cs_ranked": 0.73,
      "hv_vov_cs_z": 0.64,
      "is_final": 0,
      "last_updated": "2026-06-12 15:31:04"
    }
  ]
}

Notes on Data Behavior

  • The first ~month of each ticker's history is absent while the 21-observation window warms up
  • Vol-of-vol is the coefficient of variation (std ÷ mean), so it is dimensionless and comparable across names
  • Today's row is provisional intraday (is_final = 0) and settled after the close (is_final = 1, ~16:30 ET)
  • Once a date settles, its values are fixed and not retroactively altered
  • Results are ordered by date DESC, ticker ASC

Earnings Implied vs Realized

GET /v1/earnings-move-history

The Earnings Implied vs Realized dataset is a per-ticker track record of how each company's earnings move was priced versus how it actually moved. For every earnings event, it captures the pre-earnings at-the-money straddle (the market's implied move) and compares it to the realized post-earnings move.

Alongside each event it carries running, point-in-time statistics for the ticker — how often the straddle over- or under-priced the move, and the trailing averages of implied move, realized move, and over/under-pricing. This answers the recurring question: does this name usually over- or under-price its earnings?

All observations are stored historically and remain fixed once the post-earnings session has resolved, so the dataset can be used safely in systematic research and backtesting without lookahead bias.

Why it's useful

  • Answer “does TICKER usually over- or under-price its earnings?” with a running hit rate
  • Rank or screen names by their straddle over/under-pricing tendency ahead of an earnings season
  • Study the implied-vs-realized edge for earnings vol selling or buying
  • Backtest earnings strategies conditioned on a ticker's historical move ratio and hit rate
  • Compare straddle-implied moves to consensus EPS surprises and realized reactions

Endpoint

GET /v1/earnings-move-history

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/earnings-move-history"
params = {
    "ticker": "AAPL",
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/earnings-move-history?ticker=AAPL&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, events across all tickers are returned.
  • date (optional) — earnings date filter (YYYY-MM-DD). Cannot be combined with date range parameters.

If no date filters are provided, all available historical events are returned (subject to your tier's visible window).

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Response Fields

FieldTypeDescription
datestringEarnings (observation) date (YYYY-MM-DD)
tickerstringEquity ticker symbol
timestringAnnouncement timing (e.g. bmo = before market open, amc = after market close)
capture_datestringTrading date the pre-earnings straddle was priced (YYYY-MM-DD)
reaction_datestringTrading date the post-earnings move was measured (YYYY-MM-DD)
spotfloatUnderlying spot price at capture
atm_strikefloatAt-the-money strike used for the straddle
exp_datestringOption expiration used for the straddle (YYYY-MM-DD)
days_to_expintegerCalendar days from capture to expiration
atm_call_pxfloatATM call price at capture
atm_put_pxfloatATM put price at capture
straddlefloatATM straddle price (call + put)
implied_move_pctfloatStraddle-implied % move into earnings
implied_move_dollarsfloatStraddle-implied $ move
atm_ivfloatATM implied volatility at capture
realized_return_pctfloatActual signed % return over the earnings reaction
realized_abs_move_pctfloatAbsolute value of the realized % move
over_under_pctfloatImplied minus realized move; positive = straddle overpriced the move
move_ratiofloatRealized move ÷ implied move
overpricedbooleanWhether the straddle overpriced the move (realized < implied)
eps_estimatedfloatConsensus EPS estimate
eps_actualfloatReported EPS
notional_volumefloatOptions notional volume at capture (liquidity context)
n_events_to_dateintegerCount of earnings events observed for this ticker up to and including this one
hit_rate_to_datefloatRunning share of this ticker's events where the straddle overpriced the move
avg_implied_move_to_datefloatTrailing average implied move for this ticker
avg_realized_abs_to_datefloatTrailing average realized absolute move for this ticker
avg_over_under_to_datefloatTrailing average over/under-pricing for this ticker

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-01-29",
      "ticker": "AAPL",
      "time": "amc",
      "capture_date": "2026-01-29",
      "reaction_date": "2026-01-30",
      "spot": 232.14,
      "atm_strike": 232.5,
      "exp_date": "2026-01-30",
      "days_to_exp": 1,
      "atm_call_px": 4.85,
      "atm_put_px": 4.70,
      "straddle": 9.55,
      "implied_move_pct": 4.11,
      "implied_move_dollars": 9.55,
      "atm_iv": 0.68,
      "realized_return_pct": -2.34,
      "realized_abs_move_pct": 2.34,
      "over_under_pct": 1.77,
      "move_ratio": 0.57,
      "overpriced": true,
      "eps_estimated": 2.35,
      "eps_actual": 2.41,
      "notional_volume": 184320000,
      "n_events_to_date": 18,
      "hit_rate_to_date": 0.67,
      "avg_implied_move_to_date": 4.42,
      "avg_realized_abs_to_date": 3.61,
      "avg_over_under_to_date": 0.81
    }
  ]
}

Notes on Data Behavior

  • Updated daily after the market close (EOD)
  • For an event whose post-earnings session has not yet closed, the realized fields (realized_return_pct, realized_abs_move_pct, over_under_pct, move_ratio, overpriced) are not yet populated
  • Running statistics (n_events_to_date, hit_rate_to_date, the trailing averages) are point-in-time — they reflect only events up to and including each row
  • Once an event resolves, its values are fixed and not retroactively altered
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by date DESC, ticker ASC

Stock Dilution

GET /v1/dilution

The Dilution dataset captures U.S. equity dilution risk at the moment it enters the market. It is a point-in-time record of S-1 registration statements, enriched with market context and lifecycle tracking, designed for traders and researchers who need to identify and manage dilution-driven risk with precision.

Each record represents a filing as it was known on the filing date, labeled for its dilutive impact and later resolved as the filing becomes effective or is withdrawn.

Why it's useful

  • Identify dilution risk at inception, not in hindsight
  • Filter or size exposure around secondary offerings and resale pressure
  • Build short-biased or risk-aware strategies in small- and mid-cap equities
  • Study post-filing outcomes, including time-to-effectiveness or withdrawal

Endpoint

GET /v1/dilution

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/dilution"
params = {
    "date_gte": "2026-02-06",
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/dilution?date_gte=2026-02-01&api_key=alp_abc123"

Request Parameters

  • api_key (optional) — your API key. Enables full dataset access and reduces per-request limits. If omitted, a limited subset is returned.
  • ticker (optional) — stock ticker filter (case-insensitive, exact match). If omitted, data across all tickers are returned.
  • date (optional) — filing date filter (YYYY-MM-DD). If omitted, a ticker must be provided.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-02-02",
      "filing_timestamp": "2026-02-02T16:05:51-05:00",
      "ticker": "IVDA",
      "company_name": "Iveda Solutions, Inc.",
      "market_cap_at_filing": 2557918.88,
      "dilutive": 1,
      "resale": 0,
      "shares_offered": 5434782.0,
      "became_effective": 0,
      "effective_date": "",
      "days_to_effective": null,
      "offering_withdrawn": 0,
      "withdrawal_date": "",
      "days_to_withdrawal": null,
      "root_file_number": "333-293126",
      "accession_number": "0001493152-26-004743",
      "filing_url": "https://www.sec.gov/Archives/edgar/data/1397183/000149315226004743/0001493152-26-004743-index.htm",
      "last_updated": "2026-02-02 23:01:15.364519-05:00"
    }
  ]
}

Core Filing Fields (Point-in-Time)

FieldTypeDescription
datestringFiling date (YYYY-MM-DD)
filing_timestampstringExact filing timestamp (ET)
tickerstringStock ticker at filing time
company_namestringIssuer name
root_file_numberstringSEC registration file number
accession_numberstringUnique SEC accession ID
filing_urlstringDirect link to EDGAR filing

Market Context (Point-in-Time)

FieldTypeDescription
market_cap_at_filingfloatMarket cap measured one trading day prior
shares_offeredfloatShares registered in the filing

Dilution Classification

FieldTypeDescription
dilutiveintegerBinary indicator (1 = dilutive, 0 = non-dilutive)
resaleintegerIndicates resale registration

Lifecycle Resolution

FieldTypeDescription
became_effectiveintegerFiling became effective
effective_datestringEffective date (YYYY-MM-DD)
days_to_effectivefloatDays from filing to effectiveness
offering_withdrawnintegerFiling was withdrawn
withdrawal_datestringWithdrawal date (YYYY-MM-DD)
days_to_withdrawalfloatDays from filing to withdrawal

Metadata

FieldTypeDescription
last_updatedstringTimestamp of most recent lifecycle update

Notes on Data Behavior

  • Records are never removed once published
  • Point-in-time fields remain fixed
  • Only lifecycle fields update as events occur
  • All dates are returned as YYYY-MM-DD strings

De-SPAC Events

GET /v1/de-spac-events

The De-SPAC Events dataset provides a point-in-time record of completed de-SPAC transactions, identifying when special purpose acquisition companies (SPACs) formally consummate their business combinations and transition into operating companies.

Each observation represents a confirmed de-SPAC completion event derived from SEC filings (typically Super 8-K disclosures). These events mark the structural transition from a blank check company into a publicly traded operating entity.

All observations are stored historically and remain fixed once published, allowing the dataset to be used safely in systematic research and backtesting workflows without lookahead bias.

Why it's useful

  • Identify newly public companies emerging from SPAC mergers
  • Build event-driven strategies around post de-SPAC performance
  • Study structural inefficiencies following SPAC business combinations
  • Track regime shifts in liquidity, float, and ownership post-merger
  • Construct short-bias or mean-reversion strategies targeting de-SPAC cohorts
  • Backtest systematic workflows conditioned on corporate transition events

Endpoint

GET /v1/de-spac-events

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/de-spac-events"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/de-spac-events?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date (optional) — return observations for a single date (YYYY-MM-DD).
  • date_gte / date_lte / date_gt / date_lt (optional) — filter by date range. Any logically valid combination is accepted.

If no date filters are provided, all available historical observations are returned.

Response Format

JSON
{
  "count": 2,
  "data": [
    {
      "date": "2026-03-20",
      "ticker": "MRLN",
      "filing_url": "https://www.sec.gov/Archives/edgar/data/0000000000/..."
    },
    {
      "date": "2026-03-09",
      "ticker": "FTW",
      "filing_url": "https://www.sec.gov/Archives/edgar/data/0000000000/..."
    }
  ]
}

Response Fields

FieldTypeDescription
datestringDe-SPAC completion date (YYYY-MM-DD), based on the filing date of the closing disclosure
tickerstringPost-business-combination ticker symbol
filing_urlstringDirect link to the underlying SEC filing used to identify the event

Dataset Definition

Each observation corresponds to a confirmed de-SPAC completion event, identified through systematic parsing of SEC filings. A de-SPAC event is defined as the consummation of a business combination in which a SPAC merges with or acquires an operating company and ceases to function as a shell entity.

Events are primarily sourced from filings that explicitly indicate completion of the transaction, including language such as:

  • “consummated the business combination”
  • “completion of the business combination”
  • “closed the business combination”

Additional confirming signals may include change in shell-company status, name change following the transaction, and commencement of trading under a new ticker. Only filings that clearly indicate completion (not proposals or pending transactions) are included.

Notes on Data Behavior

  • Events are recorded using the filing date of the de-SPAC completion disclosure
  • This date may occur shortly after the first day of trading under the new ticker
  • Observations are point-in-time and reflect only information available at the time of filing
  • Historical records are not retroactively altered
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by date DESC

Corporate Default Events

GET /v1/corporate-default-events

The Corporate Default Events dataset provides a historical, point-in-time log of public-company default events, labeled from SEC filing text and normalized into a clean event feed.

Each observation represents a date where a company was flagged as being in default status (is_default = 1), along with the associated ticker and the SEC filing URL used as source evidence.

The dataset is designed for systematic traders and researchers who need a reproducible event series for distress screens, event studies, short baskets, and credit-risk proxies.

Why it's useful

  • Build distress / default event studies and measure post-event drift
  • Screen for credit-like equity behavior without requiring CDS data
  • Create short candidate universes based on documented default status
  • Filter long strategies to avoid names entering default or restructuring conditions
  • Train ML models using default events as labels or regime triggers

Endpoint

GET /v1/corporate-default-events

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/corporate-default-events"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/corporate-default-events?api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • date (optional) — return events for a single date (YYYY-MM-DD). Cannot be combined with range parameters.
  • date_gte / date_lte / date_gt / date_lt (optional) — filter events by date range. Any logically valid combination is accepted.

Validation rules:

  • date_lte must be ≥ date_gte
  • date_lte must be > date_gt
  • date_lt must be > date_gte

If no date filters are provided, all available historical observations are returned (subject to tier-based limits).

Response Format

JSON
{
  "count": 517,
  "data": [
    {
      "event_date": "2026-02-09",
      "ticker": "ESGH",
      "filing_url": "https://www.sec.gov/Archives/edgar/data/1883835/000152013826000054/0001520138-26-000054-index.htm"
    }
  ]
}

Response Fields

FieldTypeDescription
event_datestringEvent date (YYYY-MM-DD)
tickerstringCompany ticker symbol
filing_urlstringSEC filing URL used as source evidence

Notes on Data Behavior

  • Results are filtered to default-only events (is_default = 1)
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by event_date DESC
  • Invalid date format returns a 400 with the expected format
  • If date is combined with any date range parameter, the API returns a 400

Dividend Capture

GET /v1/dividend-capture

The Dividend Capture dataset is a calendar-driven view of ex-dividend events. For each event it measures how much the stock dropped on the ex-date relative to the dividend paid (the drop ratio), the net amount captured after that drop, and how many trading days the position took to recover back to breakeven.

Historical ex-day behavior is joined to the forward ex-dividend schedule, so the same endpoint answers both “how have ex-days behaved for this name?” and “which dividends are coming up?” — a ready-made dividend-capture screen.

Why it's useful

  • Run a ready-made dividend-capture screen across upcoming ex-dividend dates
  • Gauge how much of the dividend is typically given back via the ex-day price drop
  • See historical recovery odds (within 1 / 3 / 5 / 10 / 20 trading days) before committing capital
  • Pull a forward ex-dividend calendar for a single name or the whole market
  • Filter to events that did or did not recover to breakeven for post-trade analysis

Endpoint

GET /v1/dividend-capture

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed historical data. The forward ex-dividend calendar (via upcoming=true) is accessible on Free — the forward query intentionally bypasses the historical delay window.

Sample Request

Pull the upcoming ex-dividend calendar for the next two weeks:

Python
import requests

url = "https://api.alphanume.com/v1/dividend-capture"
params = {
    "upcoming": "true",
    "future_days": 14,
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/dividend-capture?upcoming=true&future_days=14&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, events across all tickers are returned.
  • date (optional) — ex-dividend date filter (YYYY-MM-DD). Honored as-is even if it falls beyond the forward horizon. Cannot be combined with date range parameters.
  • recovery_status (optional) — filter by recovery state (case-insensitive). Isolates events by whether the position recovered to breakeven.
  • upcoming (optional) — true / 1 / yes returns only the forward schedule: events where today < ex-date ≤ the horizon cutoff.
  • future_days (optional) — forward horizon in days. Defaults to 7, capped at 120. Sets how far past today the calendar reaches.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted. Note that the forward edge of range queries is always capped at today + future_days, so an open-ended or forward-looking range will not return months of un-actionable future ex-dates. Past-only queries are unaffected.

Response Fields

FieldTypeDescription
datestringEx-dividend date (YYYY-MM-DD)
tickerstringEquity ticker symbol
declaration_datestringDividend declaration date (YYYY-MM-DD)
record_datestringRecord date (YYYY-MM-DD)
pay_datestringPayment date (YYYY-MM-DD)
cash_amountfloatCash dividend per share
frequencyintegerDividend frequency per year (e.g. 4 = quarterly)
dividend_typestringDividend type (e.g. regular, special)
annual_dividendfloatAnnualized dividend per share
capture_yield_pctfloatDividend as a % of price (capture yield)
cum_datestringLast cum-dividend trading date — the day before the ex-date (YYYY-MM-DD)
cum_closefloatClose on the cum-dividend date
ex_openfloatOpen on the ex-dividend date
ex_closefloatClose on the ex-dividend date
price_drop_closefloatCum close minus ex close
price_drop_openfloatCum close minus ex open
drop_ratio_closefloatEx-day price drop (close) ÷ cash amount
drop_ratio_openfloatEx-day price drop (open) ÷ cash amount
net_capture_pctfloatNet % captured after the ex-day drop
breakeven_pricefloatPrice the position must recover to for breakeven
recovery_statusstringRecovery state of the event (e.g. recovered, pending)
days_to_recover_breakevenintegerTrading days taken to recover to breakeven
days_to_recover_priceintegerTrading days taken to recover to the cum-dividend price
recovery_datestringDate breakeven was recovered (YYYY-MM-DD)
recovered_within_1dbooleanWhether breakeven was recovered within 1 trading day
recovered_within_3dbooleanWhether breakeven was recovered within 3 trading days
recovered_within_5dbooleanWhether breakeven was recovered within 5 trading days
recovered_within_10dbooleanWhether breakeven was recovered within 10 trading days
recovered_within_20dbooleanWhether breakeven was recovered within 20 trading days
recovery_window_daysintegerObservation window (trading days) over which recovery is tracked
bars_observedintegerNumber of price bars observed after the ex-date
last_updatedstringDate the row was last refreshed (YYYY-MM-DD)

Example Response

JSON
{
  "count": 1,
  "data": [
    {
      "date": "2026-05-08",
      "ticker": "KO",
      "declaration_date": "2026-04-16",
      "record_date": "2026-05-11",
      "pay_date": "2026-07-01",
      "cash_amount": 0.51,
      "frequency": 4,
      "dividend_type": "regular",
      "annual_dividend": 2.04,
      "capture_yield_pct": 0.72,
      "cum_date": "2026-05-07",
      "cum_close": 70.84,
      "ex_open": 70.41,
      "ex_close": 70.55,
      "price_drop_close": 0.29,
      "price_drop_open": 0.43,
      "drop_ratio_close": 0.57,
      "drop_ratio_open": 0.84,
      "net_capture_pct": 0.31,
      "breakeven_price": 70.33,
      "recovery_status": "recovered",
      "days_to_recover_breakeven": 2,
      "days_to_recover_price": 4,
      "recovery_date": "2026-05-12",
      "recovered_within_1d": false,
      "recovered_within_3d": true,
      "recovered_within_5d": true,
      "recovered_within_10d": true,
      "recovered_within_20d": true,
      "recovery_window_days": 20,
      "bars_observed": 20,
      "last_updated": "2026-06-08"
    }
  ]
}

Notes on Data Behavior

  • Updated daily after the market close (EOD)
  • Forward (upcoming) events carry the dividend schedule but have empty ex-day and recovery fields until the ex-date has passed and price bars are observed
  • Nothing is published beyond a 120-day forward horizon; future_days is clamped to that ceiling
  • Dates are returned as YYYY-MM-DD
  • Results are ordered by date DESC, ticker ASC

Historical Optionable Tickers

GET /v1/optionable-tickers

The Historical Optionable Tickers dataset captures the point-in-time universe of U.S. equities with listed options chains.

It is a monthly snapshot of stocks with available options contracts, enriched with structural expiration information to help traders construct optionable universes with precision. Each record reflects the option listing structure as it existed on the first trading day of the respective month.

Why it's useful

  • Construct historically accurate optionable universes
  • Filter equities by expiration density (weekly vs non-weekly structures)
  • Study the evolution of options availability over time
  • Backtest strategies that require confirmed option chain presence
  • Identify securities with robust weekly expiration coverage

This dataset is especially useful for systematic traders who need to avoid survivorship bias in options-based research.

Snapshot Methodology

  • Snapshots are taken on the first trading day of each month
  • Each snapshot reflects listed option expirations available at that time
  • Historical records correspond to the first trading day of their respective month
  • Records are point-in-time and do not retroactively change

Endpoint

GET /v1/optionable-tickers

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/optionable-tickers"
params = {"api_key": "alp_abc123"}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/optionable-tickers?api_key=alp_abc123"

Request Parameters

  • api_key (optional) — your API key. Enables full dataset access and reduces per-request limits. If omitted, a limited subset is returned.
  • date (optional) — snapshot date (YYYY-MM-DD). If omitted, all existing snapshots are returned.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date
  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted. If querying across all tickers without specifying a ticker, date ranges may be restricted depending on your access tier.

Example Response

JSON
{
  "count": 1,
  "has_more": false,
  "next_cursor": null,
  "data": [
    {
      "date": "2026-02-02",
      "ticker": "PFE",
      "avg_days_between": 7.0,
      "has_weeklies": 1
    }
  ]
}

Response Fields

FieldTypeDescription
datestringSnapshot date (first trading day of month)
tickerstringStock ticker
avg_days_betweenfloatAverage number of days between the next 6 consecutive option expirations
has_weekliesintegerBinary indicator (1 = multiple consecutive weekly expirations present, 0 = not present)

Field Definitions

avg_days_between represents the average number of days between the next six consecutive option expiration dates after the first week window (expirations 1 through 6). Values close to 7 indicate dense weekly expiration structures; higher values indicate less frequent expiration spacing (e.g., biweekly or monthly listings).

has_weeklies is a binary indicator: 1 means multiple consecutive weekly expirations were listed at the snapshot date; 0 means weekly expiration continuity was not present.

Pagination

The Optionable Tickers endpoint uses cursor-based pagination for efficient retrieval of large result sets. Results are ordered deterministically:

ORDER BY date DESC, ticker DESC

When paginating, you must provide both cursor_date and cursor_ticker. These must match the next_cursor object from the previous response. If only one cursor field is provided, the request returns a 400 error.

Notes on Data Behavior

  • Snapshots are taken on the first trading day of each month
  • Records are never retroactively altered
  • Each snapshot reflects only information known at that time
  • Historical records remain fixed once published
  • All dates are returned as YYYY-MM-DD strings

Ticker Classification

GET /v1/ticker-classification

The Ticker Sector & Industry Classification dataset provides a mapping of equity tickers into Alphanume-defined sector and industry groups.

Each observation assigns a ticker to a consistent, internally defined classification system derived from underlying business activity. These classifications are designed for quantitative workflows and are not intended to replicate standardized taxonomies.

The dataset is structured to be stable, URL-safe, and directly queryable for use in filtering, grouping, and feature engineering pipelines.

Why it's useful

  • Filter universes by sector or industry exposure
  • Build sector-neutral or industry-relative strategies
  • Group tickers for cross-sectional analysis
  • Construct features based on economic exposure
  • Standardize classification across research pipelines
  • Join with other datasets for consistent segmentation

Endpoint

GET /v1/ticker-classification

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/ticker-classification"
params = {
    "api_key": "alp_abc123",
    "sector": "technology"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/ticker-classification?sector=technology&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your Alphanume API key.
  • ticker (optional) — filter results by a specific ticker. Example: ?ticker=AAPL
  • sector (optional) — filter results by sector. Must be one of the accepted sector keywords (lowercase, underscore-separated). Example: ?sector=technology
  • industry (optional) — filter results by industry. Must be one of the accepted industry keywords. Example: ?industry=semiconductors

Available Sector Values

The following sector values are accepted for the sector parameter. All values must be lowercase and underscore-separated.

FieldTypeDescription
communications_mediasectorMedia, telecom, and communication platforms
consumer_cyclicalsectorDiscretionary and demand-sensitive consumer activity
energy_resourcessectorEnergy production and resource extraction
essential_goodssectorConsumer staples and essential products
financesectorBanking, insurance, and financial services
healthcaresectorHealthcare providers, services, and products
industrial_transportsectorIndustrials, manufacturing, and transportation
raw_materialssectorBasic materials and commodity inputs
real_assetssectorReal estate and asset-backed exposures
technologysectorSoftware, hardware, and semiconductor companies
utilities_infrastructuresectorUtilities and infrastructure-related assets

Available Industry Values

The following industry values are accepted for the industry parameter. All values must be lowercase and underscore-separated.

FieldTypeDescription
automotiveindustryAutomobiles and components
bankingindustryBanking institutions
basic_materialsindustryRaw materials and commodity inputs
business_servicesindustryCommercial and professional services
consumer_servicesindustryConsumer-facing services
durables_apparelindustryConsumer durables and apparel
energy_productionindustryOil, gas, and energy generation
financial_servicesindustryFinancial service providers
food_beverageindustryFood, beverage, and related production
hardware_devicesindustryTechnology hardware and equipment
healthcare_servicesindustryHealthcare equipment and services
household_productsindustryHousehold and personal care products
industrial_equipmentindustryCapital goods and industrial machinery
insuranceindustryInsurance companies
media_contentindustryMedia and entertainment content
pharma_biotechindustryPharmaceuticals and biotechnology
real_estate_developmentindustryReal estate management and development
reitsindustryReal estate investment trusts
retail_cyclicalindustryDiscretionary retail and distribution
retail_staplesindustryStaples retail and distribution
semiconductorsindustrySemiconductor manufacturing and equipment
softwareindustrySoftware and related services
telecomindustryTelecommunication services
transport_logisticsindustryTransportation and logistics
utilitiesindustryUtility providers

Parameter Behavior

  • All parameters are optional
  • If no parameters are provided, the full dataset is returned (subject to tier limits)
  • Parameters can be combined

Examples:

?ticker=AAPL
?sector=finance
?industry=software
?sector=finance&industry=banking
?ticker=JPM&sector=finance

Invalid sector or industry values will return a 400 error.

Response Format

JSON
{
  "count": 2,
  "data": [
    {
      "ticker": "AAPL",
      "alphanume_sector": "technology",
      "alphanume_industry": "hardware_devices"
    },
    {
      "ticker": "MSFT",
      "alphanume_sector": "technology",
      "alphanume_industry": "software"
    }
  ]
}

Response Fields

FieldTypeDescription
tickerstringEquity ticker symbol
alphanume_sectorstringAlphanume-defined sector classification
alphanume_industrystringAlphanume-defined industry classification

Notes on Data Behavior

  • Classifications are deterministic and consistent
  • Values are not dynamically inferred at query time
  • Results are ordered by ticker (ascending)
  • No date dimension is applied
  • The dataset represents the current mapping of tickers to classifications

Historical Market Cap

GET /v1/historical-market-cap

The Historical Market Cap dataset provides point-in-time market capitalization and shares outstanding for equities, as they were known on each historical date.

It is designed for research and production workflows that require true point-in-time fundamentals (e.g., avoiding lookahead bias when modeling size, liquidity regimes, or dilution / float dynamics).

Why it's useful

  • Build point-in-time size factors (market cap) without future leakage
  • Normalize signals by shares outstanding / float regime
  • Backtest strategies that depend on historical capitalization thresholds (e.g., “only trade > $X market cap at the time”)
  • Monitor structural shifts from issuance / buybacks via share count changes

Endpoint

GET /v1/historical-market-cap

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Free tier access. Available on the Free plan with a rolling 30-day window of delayed data. The most recent observation (today) is reserved for Pro.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/historical-market-cap"
params = {
    "ticker": "AAPL",
    "date": "2026-02-06",
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/historical-market-cap?ticker=AAPL&date=2026-02-06&api_key=alp_abc123"

Request Parameters

  • api_key (optional) — your API key. Enables full dataset access and removes per-request limits. If omitted, a limited subset is returned.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, data across all tickers are returned.
  • date (optional) — trading date filter (YYYY-MM-DD). If omitted, a ticker must be provided.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Response Fields

FieldTypeDescription
datestringObservation date (YYYY-MM-DD)
tickerstringEquity ticker symbol
shares_outstandingfloatShares outstanding at the time
market_capfloatMarket capitalization at the time

Example Response

JSON
{
  "count": 1,
  "has_more": false,
  "next_cursor": null,
  "data": [
    {
      "date": "2026-02-06",
      "ticker": "AAPL",
      "market_cap": 4109599296360,
      "shares_outstanding": 14776353000
    }
  ]
}

Pagination

The Historical Market Cap endpoint uses cursor-based pagination for efficient retrieval of large result sets. Results are ordered deterministically:

ORDER BY date DESC, ticker DESC

Each response includes:

  • count — number of rows returned in this page
  • has_more — whether additional data is available
  • next_cursor — cursor object to retrieve the next page

When paginating, you must provide both cursor_date and cursor_ticker. These must match the next_cursor object from the previous response. If only one cursor field is provided, the request returns a 400 error.

Python
import requests

base_url = "https://api.alphanume.com/v1/historical-market-cap"
headers = {"X-API-Key": "alp_abc123"}
params = {"ticker": "AAPL"}

all_rows = []
while True:
    r = requests.get(base_url, headers=headers, params=params).json()
    all_rows.extend(r["data"])
    if not r["has_more"]:
        break
    cursor = r["next_cursor"]
    params["cursor_date"] = cursor["date"]
    params["cursor_ticker"] = cursor["ticker"]

print(f"Retrieved {len(all_rows)} rows.")

Wikipedia Views

Pro
GET /v1/wikipedia-views

The Wikipedia Views dataset provides daily Wikipedia page view counts for equities, along with rolling 30-day statistics (mean, standard deviation, and z-score) measuring how unusual current attention is relative to the recent baseline.

It is designed for research and production workflows that incorporate retail attention as a feature — whether as a standalone signal, a regime filter, or an input to event-driven and cross-sectional models.

Why it's useful

  • Build attention-based factors that capture shifts in investor interest before they show up in price or volume
  • Detect anomaly days where ticker-level attention deviates sharply from its 30-day baseline (high z-score events)
  • Filter or contextualize event-driven setups (earnings, news, filings) by the level of public attention surrounding them
  • Backtest strategies conditioned on attention regimes (e.g., “only trade names with zscore_30d > 2”)

Endpoint

GET /v1/wikipedia-views

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Pro tier required. This endpoint is not available on Free / Trial accounts. Requests authenticated under a non-Pro tier will return a 403 PRO_TIER_REQUIRED error.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/wikipedia-views"
params = {
    "ticker": "AAPL",
    "date": "2026-02-06",
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/wikipedia-views?ticker=AAPL&date=2026-02-06&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your API key. This endpoint requires Pro-tier authentication.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, data across all tickers are returned.
  • date (optional) — observation date filter (YYYY-MM-DD). Cannot be combined with date range parameters.

If no filters are provided, the endpoint returns the full dataset ordered by date descending. Use cursor pagination to walk back through history.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Z-Score Filtering

The zscore_30d field can be filtered to isolate attention anomalies. All values are floats. Supported parameters:

  • zscore_30d_gte
  • zscore_30d_lte
  • zscore_30d_gt
  • zscore_30d_lt
  • zscore_30d_eq

zscore_30d_eq cannot be combined with z-score range parameters. Any logically valid combination of the range parameters is accepted.

Common use cases:

  • zscore_30d_gte=2 — surface days with abnormally high attention
  • zscore_30d_lte=-2 — surface days with abnormally low attention
  • zscore_30d_gte=2&date=2026-02-06 — find every ticker with anomalous attention on a given date

Response Fields

FieldTypeDescription
tickerstringEquity ticker symbol
namestringWikipedia page name associated with the ticker
datestringObservation date (YYYY-MM-DD)
viewsfloatWikipedia page views on the observation date
avg_30dfloatTrailing 30-day mean of daily views
std_30dfloatTrailing 30-day standard deviation of daily views
zscore_30dfloatZ-score of views relative to the trailing 30-day distribution

Example Response

JSON
{
  "count": 1,
  "has_more": false,
  "next_cursor": null,
  "data": [
    {
      "ticker": "AAPL",
      "name": "Apple Inc.",
      "date": "2026-02-06",
      "views": 48213,
      "avg_30d": 21847.3,
      "std_30d": 6412.8,
      "zscore_30d": 4.11
    }
  ]
}

Pagination

The Wikipedia Views endpoint uses cursor-based pagination for efficient retrieval of large result sets. Results are ordered deterministically:

ORDER BY date DESC, ticker ASC

When paginating, you must provide both cursor_date and cursor_ticker. These must match the next_cursor object from the previous response. If only one cursor field is provided, the request returns a 400 error.

Python
import requests

base_url = "https://api.alphanume.com/v1/wikipedia-views"
headers = {"X-API-Key": "alp_abc123"}
params = {"ticker": "AAPL"}

all_rows = []
while True:
    r = requests.get(base_url, headers=headers, params=params).json()
    all_rows.extend(r["data"])
    if not r["has_more"]:
        break
    cursor = r["next_cursor"]
    params["cursor_date"] = cursor["date"]
    params["cursor_ticker"] = cursor["ticker"]

print(f"Retrieved {len(all_rows)} rows.")

Tier Access

This endpoint is Pro-only. Free / Trial accounts will receive a 403 response:

JSON
{
  "error": {
    "code": "PRO_TIER_REQUIRED",
    "message": "This endpoint requires a Pro subscription.",
    "hint": "Upgrade to Pro for access to Wikipedia page view data."
  }
}

SEC Filing Intensity

Pro
GET /v1/filing-intensity

The Filing Intensity dataset provides daily SEC filing counts per equity, capturing how actively a company is interacting with the SEC on any given day. Filing activity is a leading indicator: corporate actions, capital raises, insider activity, and material events all leave fingerprints in the EDGAR filing stream before they're priced in.

It is designed for research and production workflows that incorporate corporate filing behavior as a feature — whether as a standalone signal, an event-detection trigger, or an input to event-driven and cross-sectional models.

Why it's useful

  • Detect spikes in corporate activity that often precede material announcements, capital structure changes, or insider transactions
  • Build event-driven signals around tickers entering periods of unusually heavy SEC engagement
  • Filter or rank universes by recent filing intensity to surface names with active corporate developments
  • Backtest strategies conditioned on filing-burst regimes (e.g., “only trade names with filing_count >= 5 on a given day”)

Endpoint

GET /v1/filing-intensity

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key. Pass it as a query parameter (?api_key=your_key) or via header (X-API-Key: your_key).

Pro tier required. This endpoint is not available on Free / Trial accounts. Requests authenticated under a non-Pro tier will return a 403 PRO_TIER_REQUIRED error.

Sample Request

Python
import requests

url = "https://api.alphanume.com/v1/filing-intensity"
params = {
    "ticker": "AAPL",
    "date": "2026-02-06",
    "api_key": "alp_abc123"
}

r = requests.get(url, params=params)
print(r.json())
cURL
curl "https://api.alphanume.com/v1/filing-intensity?ticker=AAPL&date=2026-02-06&api_key=alp_abc123"

Request Parameters

  • api_key (required) — your API key. This endpoint requires Pro-tier authentication.
  • ticker (optional) — equity ticker filter (case-insensitive, exact match). If omitted, data across all tickers are returned.
  • date (optional) — observation date filter (YYYY-MM-DD). Cannot be combined with date range parameters.

If no filters are provided, the endpoint returns the full dataset ordered by date descending. Use cursor pagination to walk back through history.

Date Filtering

All dates must be provided in YYYY-MM-DD format. Supported parameters:

  • date_gte
  • date_lte
  • date_gt
  • date_lt

Any logically valid combination is accepted.

Filing Count Filtering

The filing_count field can be filtered to isolate periods of elevated or quiet filing activity. All values are non-negative integers. Supported parameters:

  • filing_count_gte
  • filing_count_lte
  • filing_count_gt
  • filing_count_lt
  • filing_count_eq

filing_count_eq cannot be combined with range parameters. Any logically valid combination of the range parameters is accepted.

Common use cases:

  • filing_count_gte=5 — surface days with elevated filing activity
  • filing_count_eq=0 — isolate quiet days for baselining
  • filing_count_gte=3&date=2026-02-06 — find every ticker with elevated filing activity on a given date

Response Fields

FieldTypeDescription
tickerstringEquity ticker symbol
namestringCompany name associated with the ticker
datestringObservation date (YYYY-MM-DD)
filing_countintegerNumber of SEC filings submitted by the entity on the observation date

Example Response

JSON
{
  "count": 1,
  "has_more": false,
  "next_cursor": null,
  "data": [
    {
      "ticker": "AAPL",
      "name": "Apple Inc.",
      "date": "2026-02-06",
      "filing_count": 7
    }
  ]
}

Pagination

The Filing Intensity endpoint uses cursor-based pagination for efficient retrieval of large result sets. Results are ordered deterministically:

ORDER BY date DESC, ticker ASC

When paginating, you must provide both cursor_date and cursor_ticker. These must match the next_cursor object from the previous response. If only one cursor field is provided, the request returns a 400 error.

Python
import requests

base_url = "https://api.alphanume.com/v1/filing-intensity"
headers = {"X-API-Key": "alp_abc123"}
params = {}

all_rows = []
while True:
    r = requests.get(base_url, headers=headers, params=params).json()
    all_rows.extend(r["data"])
    if not r["has_more"]:
        break
    cursor = r["next_cursor"]
    params["cursor_date"] = cursor["date"]
    params["cursor_ticker"] = cursor["ticker"]

print(f"Retrieved {len(all_rows)} rows.")

Update Frequency

The Filing Intensity dataset is refreshed nightly at 11:30 PM EST. Each update incorporates all SEC filings submitted during the current trading day, ensuring data is available ahead of the next session's open. Filings submitted after the cutoff will appear in the following night's update.

Tier Access

This endpoint is Pro-only. Free / Trial accounts will receive a 403 response:

JSON
{
  "error": {
    "code": "PRO_TIER_REQUIRED",
    "message": "This endpoint requires a Pro subscription.",
    "hint": "Upgrade to Pro for access to SEC filing intensity data."
  }
}