Morningstar considers revamping index construction ahead of SpaceX IPO

Morningstar said it will revise its CRSP index rules to introduce an alternative liquidity screen so extremely large IPOs like SpaceX can be added to benchmarks more rapidly. The move, aimed at keeping indexes and index‑linked funds (including Vanguard’s $607bn Total Stock Market ETF) aligned with new market realities, follows similar fast‑track rule changes being considered by Nasdaq for the Nasdaq‑100 and by S&P Dow Jones for the S&P 500. Quicker inclusion of mega‑IPOs could shift passive fund exposures and flows, but some investors warn the changes may lower eligibility standards and alter benchmark composition. The debate highlights potential market‑wide effects on ETF tracking, rebalancing and sector/market cap weightings if giant listings are fast‑tracked into major indexes.