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Generating dozens of decacorns within a single year dramatically exceeds the historical rate of roughly twenty to thirty per decade established across fifty years of American capitalism. These private valuations are partly insulated by liquidation preferences rather than exposed to continuous public market pricing.
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SpaceX, Anthropic, and OpenAI are now worth more than every US tech company that has gone public in the last 45 years. This signals a massive shift where wealth creation is happening in private markets, locking out the average investor.
A decade ago, 88% of a tech company's value was created post-IPO. For recent IPOs, 55% of the market cap creation happened while the company was still private, fundamentally changing where investors capture growth.
The venue for tech value creation has dramatically shifted from public to private markets. For recent IPOs, over half of their market cap was generated while private, a stark reversal from ten years prior when 88% of value was created post-IPO.
Traditionally, venture-backed companies enjoyed steady valuation expansion before facing public-market competitive pressures. Because of the breakneck pace of AI adoption and disruption, private companies are now experiencing severe multiple contractions and negative growth from competitors while still private, making underwriting durability far more volatile and time-compressed.
Public market investors systematically underestimate sustained high growth (e.g., 60%+), defaulting to models that assume rapid deceleration. This creates an opportunity for private investors with longer time horizons to more accurately value these companies.
The private tech market has grown 10x in 10 years to a staggering $5 trillion valuation. This is nearly a quarter of the S&P 500's market cap, highlighting a massive shift of economic power away from public exchanges.
The rapid rise of companies like OpenAI and Anthropic to trillion-dollar valuations in under five years is a rare "punctuated equilibrium" event. Founders and investors should not expect this unprecedented speed to become the standard for the next wave of companies.
A strong power law effect is at play across markets. In the private sphere, the top 10 unicorns now account for almost 40% of all unicorn value, doubling their share since 2020. This concentration mirrors the public markets, highlighting an increasing 'winner-take-all' dynamic.
The trend of companies staying private longer and raising huge late-stage rounds isn't just about VC exuberance. It's a direct consequence of a series of regulations (like Sarbanes-Oxley) that made going public extremely costly and onerous. As a result, the private capital markets evolved to fill the gap, fundamentally changing venture capital.
A fundamental shift has occurred where massive value is created and held in private markets. The top six private tech companies (Anthropic, OpenAI, etc.) have a combined valuation of $2.4 trillion, surpassing the $1.7 trillion total market cap of all IPOs over the past decade.