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This page covers the API. For the full strategy and intuition behind this dataset, see:
→ [Guide: De-SPAC Short Signals (De-SPAC Events]

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

Use this dataset to:

• 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

Because the dataset is stored point-in-time and not retroactively altered, it can be used in research without introducing lookahead bias.

Endpoint

GET /v1/de-spac-events

Base URL

https://api.alphanume.com/v1

Authentication

All requests require an API key.

Pass your key either:

As a query parameter

?api_key=your_key

Or via header

X-API-Key: your_key

Note

This endpoint is available to Pro plans only. Requests made with non-Pro API keys will return a 403 PREMIUM_ENDPOINT error.

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.

Format:
YYYY-MM-DD

Example:

?date=2026-02-12

date_gte / date_lte / date_gt / date_lt (optional)

Filter observations by date range.

All dates must be provided in YYYY-MM-DD format.
Any logically valid combination is accepted.

Examples:

?date_gte=2025-01-01&date_lte=2025-12-31
?date_gt=2025-06-01

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

Response Format

Responses are returned in JSON format.

Example:

{
  "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

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 special purpose acquisition company (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
• 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
• This endpoint is Pro-only

Typical Use Cases

• Building short-bias strategies targeting post de-SPAC underperformance
• Identifying newly listed operating companies entering public markets
• Studying post-merger volatility, liquidity, and return dynamics
• Conditioning strategies on corporate transition events
• Constructing event-driven pipelines around SPAC lifecycle milestones
• Combining with dilution or options datasets for multi-signal workflows