A historic stock market debut is imminent, with SpaceX's initial public offering (IPO) expected to take place in June, drawing interest from the same liquidity pool as crypto. The company has filed a confidential S-1 with the SEC, aiming to raise $75 billion at a valuation of $1.75 trillion. If successful, this would be the largest stock market debut in history, surpassing Saudi Aramco's $29 billion record in 2019.

Polymarket traders predict a 65% chance of the IPO occurring in June and a 53% chance that the first-day closing market cap will exceed $2 trillion. SpaceX is not alone, as OpenAI and Anthropic are also planning to go public, with the three companies potentially raising over $240 billion from June to the end of the year. This massive capital pull could impact the crypto market, as bitcoin, ether, and other major cryptocurrencies have traded with increasing correlation to the Nasdaq and S&P 500 over the past two cycles.

When speculative capital leaves equities for an IPO allocation, some of the capital that would otherwise bid up crypto assets may be redirected. The historical parallel with Coinbase's IPO in 2021, which marked the peak of the last bitcoin cycle, is a point of concern. The lesson learned from that experience is that institutional milestones often mark tops rather than starting lines, as the capital that chases the milestone is the same capital that was previously holding up the asset. SpaceX's IPO has two features that connect directly to crypto flows: a 30% retail allocation, which is three times the typical retail share, and the company's holding of 8,285 BTC worth roughly $600 million in Coinbase Prime custody.

The testable signal going forward is whether crypto holds up through the roadshow window in May and June or begins to drift lower as allocators free up room for the SpaceX subscription.