What Is a Special Purpose Acquisition Company (SPAC)?
A special purpose acquisition company, or SPAC, is a shell corporation with no products, revenue, or operations that goes public purely to raise a pool of cash. Its only job is to find a private operating company and merge with it, which makes the private company publicly traded overnight. Because the SPAC exists before it knows what it will buy, investors are often said to be writing a blank check to the sponsor team.
SPACs are led by sponsors, typically former executives, private equity investors, or bankers, who pitch their deal-finding ability rather than a business plan. In exchange for putting the vehicle together, sponsors usually receive founder shares equal to roughly 20 percent of the SPAC's equity for a nominal price, a stake known as the promote.
How a SPAC Works
A SPAC typically IPOs by selling units at 10 dollars each, with each unit containing one share and a fraction of a warrant. The IPO proceeds go into a trust account earning interest while the sponsor searches for a target, usually with a deadline of 18 to 24 months. If no deal is completed by the deadline, the SPAC liquidates and returns the trust to shareholders.
Once the sponsor signs a merger agreement, shareholders vote on the deal and can redeem their shares for roughly 10 dollars plus interest even if they vote in favor. Deals are often paired with a PIPE, a private investment in public equity, in which institutional investors commit additional capital at closing to backfill redemptions and validate the valuation. When the merger closes, the combined company takes over the SPAC's stock listing, a step known as the de-SPAC.
SPAC vs. Traditional IPO
Compared with a traditional IPO, a SPAC merger offers speed, a privately negotiated valuation, and the ability to market the deal using forward projections, which are generally avoided in conventional IPO prospectuses. For companies that are early-stage, complicated, or facing a shaky IPO window, that certainty can be attractive.
The trade-off is dilution and cost. Between the sponsor's 20 percent promote, warrant overhang, and redemption dynamics, the effective cost of going public via SPAC can exceed typical IPO underwriting fees of around 7 percent. In interviews, a common question is to compare a SPAC merger with a traditional IPO and a direct listing and explain when each path makes sense.
The SPAC Boom and Its Aftermath
SPACs surged in 2020 and 2021, when hundreds of vehicles raised well over 100 billion dollars in aggregate and took many electric vehicle, space, and fintech startups public. Enthusiasm faded as many de-SPACed companies missed projections and traded far below the 10 dollar reference price, and regulators tightened disclosure rules around projections and sponsor conflicts.
The structure has not disappeared, but the market has become more selective, with higher redemption rates and greater scrutiny of sponsor incentives. SPACs remain a useful case study in how deal structure, incentives, and market cycles interact.
