What is a SPAC? Definition, Formula, and Example
A SPAC (Special Purpose Acquisition Company) is a publicly traded shell company that raises capital via IPO to acquire a private business within 18-24 months, taking that business public without a traditional IPO process.
A SPAC — Special Purpose Acquisition Company — is a publicly traded shell company formed solely to acquire or merge with a private operating business, taking that business public without a traditional IPO. SPACs raise capital through their own IPO, typically at $10 per unit, and park the proceeds in a trust while management searches for a target. If no acquisition closes within the deadline (usually 18-24 months), the SPAC liquidates and returns the trust value to shareholders. The structure boomed in 2020-2021 and collapsed by 2023, leaving a class of post-merger companies that has materially underperformed.
How a SPAC Is Structured
The lifecycle has four stages:
1. Formation and IPO. Sponsors raise capital at $10 per unit (1 common share + a fractional warrant). Proceeds go into an interest-bearing trust.
2. Founder shares ("the promote"). Sponsors receive ~20% of post-IPO equity for nominal consideration — typically $25,000 total. This is the structural giveaway driving most SPAC criticism.
3. Target search and deal announcement. Sponsors have 18-24 months to identify and announce a merger target ("de-SPAC"). Failure to close triggers liquidation; shareholders receive trust value plus accrued interest.
4. Shareholder vote and redemption. Pre-merger shareholders vote on the deal and may redeem their shares at trust value (~$10 + interest), regardless of how they vote. High redemption rates leave the merged company with less capital than the deal originally implied.
Worked Example: CCIV → Lucid Motors
Churchill Capital Corp IV (CCIV) IPO'd at $10 in July 2020. Rumors of a Lucid Motors merger surfaced in January 2021, and the stock spiked to $64.86 on February 22, 2021 — over 6x trust value before the deal was even formally announced. The merger closed in July 2021 at a $24 billion valuation; the ticker became LCID and opened at $25.
Post-merger redemptions left Lucid with $4.4 billion of the originally pledged $4.6 billion — a relatively low redemption rate for the era. By 2026, LCID trades in low single digits, a 95%+ drawdown from the pre-merger CCIV peak. The CCIV/LCID arc is the canonical SPAC case study: speculative pre-deal premium, capital intact at close, multi-year underperformance after the unlock.
When Traders Engage SPACs
Three primary trade types:
- Pre-deal arbitrage. Buy units at or below $10 trust value, earn interest in trust, retain optionality on a deal announcement, and redeem at $10 + interest if the deal disappoints. The lowest-risk SPAC trade and a favored institutional play.
- Deal-rumor speculation. Trade SPAC commons on leaked or announced targets — high-variance, narrative-driven, often violent on the open.
- Warrant trading. Post-announcement warrants offer leveraged exposure to deal closing and post-merger performance; they expire worthless if the deal fails.
Limitations and Misconceptions
The sponsor promote and warrant dilution structurally disadvantage non-sponsor shareholders — every share that survives redemption is diluted by the 20% promote and outstanding warrants. The 2020-2021 SPAC boom produced a class of post-merger companies whose median 1-year post-de-SPAC return ran between −30% and −50% per academic studies (Klausner, Ohlrogge, Ruan 2022). Redemption rates above 80% became common by 2022, leaving merged companies undercapitalized relative to deal projections. SPACs are not a cheap path to public markets — total costs frequently exceed traditional IPO underwriting fees once dilution is fully accounted for.