Insights

What Is a Bought Deal in Equity Offerings?

Alphanume Team · May 27, 2026

The overnight underwritten raise where the bank takes the inventory risk — and the timing pattern it creates for short-side traders.

A bought deal is the fastest legal route from "we want to raise capital" to "the money is in our account." A single underwriter — or a small syndicate — commits to buy an entire offering from the issuer at a negotiated price, typically after the close, and then resells the block into the market over the following hours and days. The structure shifts inventory risk from the issuer to the bank, which is exactly why it can clear so quickly.

Mechanics

A bought deal usually unfolds across a single overnight window:

Pre-close negotiation. Late in the trading day, the issuer's CFO and the underwriter agree on size and a discount to the current price. The bank commits to buy at the negotiated price.
After-hours announcement. An 8-K hits disclosing the deal. The bank begins marketing the block to institutional buyers immediately.
Overnight allocation. The book is built and allocated in a matter of hours.
Pricing disclosure (424B5). A 424B5 prospectus supplement hits with the final terms.
T+1 trading. The stock opens reflecting the discount and the new supply.

Bought deal vs traditional firm-commitment

A bought deal is technically a firm-commitment offering, but the speed and concentration distinguish it from a classic underwritten follow-on. Where a traditional follow-on involves several days of roadshow and a syndicate of underwriters, a bought deal compresses the entire process into a few hours and a single (or small) bank.

For the underwriter, the economics are blunt: they take the entire offering onto their balance sheet at a price that includes a meaningful discount, then resell it. If the resale clears above their purchase price, the spread is the fee. If not, the bank is stuck with inventory.

Why companies use them

Speed. Closing capital in 24 hours is sometimes the entire point — for a tactical acquisition, a debt repayment, or to take advantage of a price spike.
Certainty. The underwriter's commitment removes execution risk. The issuer knows the proceeds before the market opens.
Reduced disclosure window. The shorter timeline minimizes the leakage opportunity that a multi-day marketed offering would create.

What it signals

Bought deals are most common in two situations:

Strong issuers raising opportunistically. The stock has rallied; the company wants to lock in the higher price; a bank is willing to take the inventory because demand is robust. Outcomes from this category are mixed.

Issuers with a near-term funding need. The company needs capital and is willing to accept the discount and the speed in exchange for certainty. This is more common in clinical-stage biotech and capital-intensive growth names.

Reading the discount is the cleanest tell. A bought deal priced 3–5% below the prior close suggests strong demand and an opportunistic raise. A bought deal priced 10%+ below the prior close suggests the bank required a wide cushion to take on the inventory — usually a sign of softer institutional appetite.

Why traders watch them

From a structural perspective, the bought deal creates predictable supply dynamics:

The underwriter is short inventory between commitment and allocation — they have a strong incentive to clear the block quickly.
Buyers in the block are typically institutions with diverse holding periods. Some will hold for the longer-term thesis; some will distribute into strength over the following weeks.
The overhang of any unsold inventory pressures the underwriter to keep selling, which can extend the post-announcement weakness beyond the day-one gap.

Empirically, the post-bought-deal drift in small caps is meaningful — typically negative over 30–60 days, with magnitude proportional to the discount required to clear the deal.

Reading the filings

The filings sequence is straightforward:

8-K announcing the offering. Filed after close; discloses size and underwriter.
424B5 with pricing. Filed within hours; the actionable document.
8-K closing notice. Filed at settlement.

The discount, underwriter identity, and over-allotment (greenshoe) terms are the three most useful fields. A 15% greenshoe on a bought deal is standard; exercised greenshoes add to total dilution and are disclosed in a subsequent 8-K.

Where Alphanume fits

Alphanume's Dilution Events dataset classifies bought deals as a distinct event type — separating them from broader underwritten public offerings — and tracks the discount, underwriter, greenshoe, and post-offering price action automatically. For systematic monitoring, this removes the need to read each 424B5 to determine which structure the company used.

Explore the Dilution Events dataset →