Index providers and fund managers are racing to adjust their rules for SpaceX's blockbuster initial public offering, a listing that could land in popular index funds and retirement accounts within as little as five trading days. The rush underscores the satellite and rocket company's potential to reshape norms around high-profile IPOs.

Retail traders are also aggressively seeking shares of SpaceX, alongside other high-flying private companies like OpenAI and Anthropic. This surge reflects a broader appetite among individual investors for access to formerly exclusive private markets.

The speed at which SpaceX could enter major indexes — driven by relaxed inclusion criteria — would mark a departure from traditional listing timelines. If added to widely held benchmarks, the stock would automatically flow into millions of 401(k) portfolios.

Critics warn that such rapid index inclusion could expose retail investors to heightened volatility without sufficient time for price discovery. The move also raises questions about whether index rules are being bent to accommodate a single high-profile issuer.

Yet for many, the prospect of owning SpaceX in a retirement account is a powerful draw. The company's valuation has soared in private rounds, and its public debut is expected to be one of the largest in history.