Direct Listings and SPACs: The Two Alternative Doors to the Public Market

A direct listing puts existing shares straight onto an exchange with no underwritten offering at all; a SPAC (special purpose acquisition company) reverses the sequence entirely — the shell goes public first, then finds a company to become. Each exists because of specific frictions in the traditional IPO — underpricing, fees, dilution, lock-ups — and each carries its own mechanics and its own documented costs, which the SPAC boom of 2020–21 demonstrated at scale. Mechanics and history, per the pillar rule; no view on any listing or vehicle.

Direct listings: the market without the middleman's offering

In a direct listing, the company registers its existing shares and simply lets them begin trading: no new shares are sold, no offer price is set, no allocations are made. On the first morning, the exchange's opening auction — informed by a non-binding reference price and the actual supply of insiders willing to sell against accumulated demand — discovers the price directly, doing in one auction what bookbuilding does over weeks. The trade-offs follow from the design. What the company escapes: the gross spread on an offering, the documented underpricing (there is no offer price to pop from), and often the lock-up (insiders can typically sell immediately — the point, for a company doing this to create liquidity rather than raise money). What it gives up: fresh capital, in the classic format — the mechanism suited companies already well-funded that wanted liquidity and a listing, not proceeds — and the underwriters' stabilisation and distribution machinery; banks still advise, but no one supports the aftermarket. Documented category history: the format was popularised by large, well-known technology companies in 2018–2019 whose successful debuts established the template, and US exchange rules were subsequently amended to permit primary direct listings — raising new capital in the opening auction — though the classic no-raise version remains the common form. Structural honesty: because supply on day one is whatever insiders choose to sell, early trading can be thin and volatile, and the reference price is an orientation, not a promise.

SPACs: the shell that goes public first

A SPAC inverts the sequence. The shell: sponsors raise money in an IPO of a company with no business — typically units at a standard price containing a share plus a fraction of a warrant — and place the proceeds in trust. The search: the shell has a deadline (commonly around two years) to find a private company and merge with it — the de-SPAC — or return the trust to investors. The choice: when a deal is announced, shareholders vote and, crucially, hold a redemption right — each can take back their trust money (roughly the unit price plus interest) instead of riding into the merged company, regardless of how they vote. For the private company, the de-SPAC is a back door to a listing: a negotiated merger with a listed shell, historically marketed as faster and — because merger documents could include projections in ways traditional IPO prospectuses did not — friendlier to story-stage businesses. The costs are structural and documented. Sponsor promote: sponsors typically receive ~20% of the shell's equity for a nominal investment — compensation that dilutes whoever remains after the merger. Warrant overhang dilutes further. Redemption arithmetic: when most shareholders redeem (as became the norm late in the boom), the company receives far less cash than the headline trust while the promote stays intact — concentrating the structure's cost on non-redeeming holders. The documented history is the honest close: the 2020–21 boom saw hundreds of SPACs raise unprecedented sums; the subsequent bust saw widespread post-merger underperformance as a class, high redemption rates, liquidations of shells that found no deal, and — in 2024 — US securities regulators adopting rules aligning de-SPAC disclosure and liability more closely with traditional IPOs, narrowing the differences that had made the route attractive. The academic literature on the episode documents the dilution mechanics as the central explanation for the class's returns; the format survives, at far lower volume, for situations its structure genuinely suits.