By Jack Pitcher

The two key Nasdaq stock benchmarks will treat SpaceX very differently at first.

The Nasdaq composite, a benchmark that includes virtually every stock that trades on the Nasdaq exchange, has already added SpaceX, weighted according to the company's full market cap of nearly $3 trillion.

That means SpaceX is now one of the biggest components of this broad benchmark, which often appears next to the S&P 500 and Dow Jones Industrial Average as a performance gauge on brokerage apps and news channels. Nasdaq has long added companies listed on its exchange to this benchmark on their second day of trading.

The Nasdaq-100, meanwhile, an index of the roughly 100 largest non-financial companies that trade on the exchange, won't add SpaceX until at least July, after shortening its waiting period for new entrants to 15 trading days from three months.

Unlike the more-than 3,000 member Nasdaq composite, the Nasdaq-100 is widely tracked by index funds, including Invesco's $500 billion QQQ ETF.

SpaceX will have a much smaller impact on the Nasdaq-100 when it's first added, because that index adjusts market cap weights based on a company's "free-float," or the portion of its shares that trade publicly. Right now, less than 10% of SpaceX shares are trading publicly, but that figure will grow as lockup periods end and employees and insiders can begin selling shares in the coming months.

SpaceX traded around 5% higher Tuesday afternoon, helping the Nasdaq composite handily outperform the Nasdaq-100. (For more background on the indexes, check out Nasdaq's description here. And see our earlier story for how other index providers are handling SpaceX.)

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(END) Dow Jones Newswires

June 16, 2026 15:17 ET (19:17 GMT)

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