Special Purpose Acquisition Companies (SPACs) have transformed the process of public market entry, offering an alternative route for private companies seeking to go public without the traditional IPO process. These “blank check companies” experienced unprecedented growth between 2020 and 2021, fundamentally changing how businesses access capital markets.
A SPAC is essentially a publicly traded shell company created with the sole purpose of acquiring or merging with an existing private company. Unlike traditional companies that go public with established operations, SPACs have no business operations, assets, or revenue streams beyond the cash raised through their initial public offering. This unique structure allows private companies to bypass the lengthy and complex traditional IPO process while still achieving public market status.
The SPAC boom represents one of the most significant financial market phenomena of recent years, with total investment nearly doubling from $83 billion in 2020 to over $160 billion in 2021. Understanding what drove this explosive growth reveals important insights into modern capital markets and investment strategies.
Understanding SPAC Structure and Mechanics
SPACs operate on a straightforward premise that distinguishes them from traditional investment vehicles. When formed, these companies raise capital through an IPO, placing substantially all proceeds into a trust account that can only be accessed for acquisition purposes. The SPAC structure typically involves sponsors who receive approximately 20% of the company’s equity after the IPO in exchange for their expertise and minimal initial investment.

The process begins when experienced investors or sponsors with industry expertise form the SPAC and file registration statements with the SEC. Following the IPO, which typically prices shares at $10 per unit, the SPAC has 18 to 24 months to identify and complete an acquisition. If no suitable target is found within this timeframe, the SPAC must liquidate and return funds to investors, including any earned interest.
Key features of SPAC investments include warrants that provide additional upside potential and redemption rights that allow investors to recover their initial investment if they disapprove of the proposed merger. This unique redemption feature provides a safety net that traditional investments lack, making SPACs particularly attractive to risk-averse investors.
The SPAC Boom: Factors Behind Explosive Growth
The dramatic surge in SPAC popularity between 2020 and 2021 resulted from multiple converging factors that created an optimal environment for these investment vehicles.
Market conditions played a crucial role in driving SPAC adoption. The COVID-19 pandemic created market uncertainty for companies that had raised venture capital but couldn’t proceed with traditional IPO plans. Simultaneously, booming financial markets and Federal Reserve stimulus measures created favorable conditions for public market entry.
Regulatory changes also contributed significantly to SPAC growth. Both the New York Stock Exchange and Nasdaq loosened their rules to attract more SPAC listings, with NYSE allowing its first blank-check listing on its main market in 2017. These regulatory adjustments made SPACs more accessible and attractive to both sponsors and target companies.
Supply and demand dynamics further fueled the boom. The number of public companies had declined dramatically from 8,000 to just over 4,000 over the past 20-30 years, while money flowing into public markets increased substantially. This imbalance created strong demand for new public investment opportunities that SPACs could fulfill.
Advantages of Driving SPAC Adoption

SPACs offer compelling advantages over traditional IPOs that explain their rapid adoption by both companies and investors. Speed represents perhaps the most significant benefit, with SPAC transactions typically completing in 3-4 months compared to 6-12 months for traditional IPOs.
Cost efficiency provides another major advantage, as SPACs typically cover most transaction costs that would otherwise burden the target company. This cost structure makes public market access more affordable for mid-sized companies that might struggle with traditional IPO expenses.
Valuation benefits also attract companies to the SPAC route. Public companies generally trade at higher multiples than private companies, allowing SPAC targets to achieve better valuations than they might receive in private equity transactions. Additionally, SPAC deals provide certainty regarding valuation and transaction completion, unlike traditional IPOs where market conditions can derail deals.
Control retention represents another key advantage, as SPAC mergers allow company owners to maintain significant stakes in their businesses, unlike private equity transactions that often require giving up majority control.
The SPAC phenomenon demonstrates how financial innovation can create new pathways for capital formation and public market access. While the initial boom has subsided, SPACs remain an important tool in the modern financial ecosystem, offering unique benefits for companies, investors, and sponsors seeking alternative routes to traditional public market entry.