SpaceX joins Nasdaq 100, S&P 500 exposure delayed until 2027

SpaceX’s $1.77 trillion IPO will be reflected in the Nasdaq‑100 index next week, giving new Nasdaq‑100 ETFs a direct holding, but the S&P 500 will keep the rocket off its roster until at least mid‑2027, leaving core S&P investors without exposure for years.

Nasdaq‑100 adds SpaceX, new ETFs compete on fees

Nasdaq’s fast‑track rule, in place since May, caps the weight of stocks with a float under 33.3 % at three times that float, meaning SpaceX’s roughly 550 million‑share float translates to a sub‑1 % index weight【1】. The timing coincides with the launch of State Street’s SPDR Portfolio Nasdaq‑100 fund (QNDX) at a 0.10 % expense ratio, undercutting Invesco’s long‑standing QQQ (0.18 %) and prompting BlackRock to file for its own Nasdaq‑100 product (ticker “IQQ”)【1】.

Because Nasdaq‑100 funds must buy any newly added constituent, investors in QNDX, QQQ or the forthcoming iShares Nasdaq‑100 will automatically receive SpaceX exposure, potentially boosting the stock’s liquidity and price support. The fee competition could also compress expense ratios across the category, benefiting investors who hold Nasdaq‑100 ETFs for tech exposure.

S&P 500 holds out, creating a “index war”

The S&P 500 Index Committee reaffirmed its standard 12‑month waiting period for new listings, effectively excluding SpaceX from the world’s largest passive U.S. equity basket for at least a year, and likely longer given the committee’s profitability test for inclusion【2】. Analysts note that this decision mirrors the treatment of other mega‑cap IPOs such as OpenAI and Anthropic, and could set a precedent for future large‑cap tech listings【2】.

For holders of S&P 500 ETFs like Vanguard’s VOO, BlackRock’s IVV, or State Street’s SPY—together managing nearly $2 trillion—SpaceX exposure will not arrive until mid‑2027 at the earliest【2】. The divergence between Nasdaq‑100 and S&P 500 inclusion is expected to generate performance dispersion among the two benchmarks, a point highlighted by ETF strategist Todd Sohn who warned of an “index war” as investors chase the higher‑growth Nasdaq exposure【2】.

What to watch

• Nasdaq‑100 weight updates – Monitor the quarterly rebalancing disclosures for the exact SpaceX weighting after the fast‑track rule is applied.
• S&P 500 committee minutes – Look for any amendment to the 12‑month rule or profitability test that could accelerate SpaceX’s inclusion.
• ETF fee trends – Track expense‑ratio filings from major providers as competition intensifies, especially any fee cuts from BlackRock’s upcoming Nasdaq‑100 product.

SpaceX’s entry into the Nasdaq‑100 gives investors a direct route to the company via low‑cost ETFs, while the S&P 500’s delayed adoption underscores a growing split in how major benchmarks treat mega‑cap tech IPOs, raising questions about future index composition and fee dynamics.