Starting Thursday, something quietly shifts for SpaceX (SPCX) and the millions of investors who hold it through index funds. The company's public float, the slice of shares actually available for trading, jumps from less than 5% to more than 12%. And that's just the beginning. Two more lockup expirations are scheduled for Aug. 20 and late September, each one unlocking more shares into the market.
Why should you care if you're not a SpaceX shareholder directly? Because you probably are one, whether you know it or not. If you own any of the 179 U.S.-listed ETFs that hold SpaceX, according to Morningstar, you're exposed. The biggest holder is the Invesco QQQ Trust (QQQ), with nearly $6 billion parked in the rocket company. Other funds with significant stakes include the Invesco NASDAQ 100 ETF (QQQM), Fidelity Nasdaq Composite Index ETF (ONEQ), Vanguard Growth ETF (VUG), and Vanguard Morningstar Mega Cap Growth ETF (MGK).
Why the Lockup Matters
Here's the mechanics. Major indexes like the Nasdaq-100 don't just count every share a company has outstanding. They use float-adjusted market cap, meaning only shares available for public trading count toward index calculations. When SpaceX's free float expands, its investable market value rises. That can lead to a larger weighting in the index at the next rebalance.
ETFs tracking those benchmarks don't rush out to buy more shares the moment a lockup expires. But over time, as the float-adjusted weight increases, passive funds have to adjust their holdings to match the index. That creates incremental demand for the stock, even if nobody's making a big show of it.
The timing is worth noting. U.S.-listed ETFs are pulling in record inflows right now, which amplifies the effect of any benchmark change. When money is flooding into funds that track the Nasdaq-100, a higher weight for SpaceX means more dollars flowing into the stock, almost by default.
Strong Revenue Growth Supports ETF Interest
SpaceX's fundamentals give index providers and ETF managers a reason to keep it around. The company reported second-quarter revenue of $7.8 billion, well ahead of expectations and nearly double the $4.1 billion it brought in a year earlier. It also narrowed its net loss to $541 million from roughly $1 billion in the same quarter last year.
The growth engine remains Starlink, which added more than one million subscribers during the quarter across 170 markets. CEO Elon Musk also touted the launch of the first Starlink V3 satellites, which he said offer about ten times the capability of previous generations.
Despite the earnings beat, SpaceX shares slipped in after-hours trading. That suggests investors are still cautious after the stock's sharp rally since its Nasdaq debut. The market may be pricing in a lot of good news already.
A Bigger Weight in Passive Portfolios
SpaceX's growing footprint also adds to a familiar worry: concentration. The company has quickly become one of the Nasdaq's largest constituents, joining the likes of Nvidia Corp (NVDA), Microsoft Corp (MSFT), Apple, Inc (AAPL), and Amazon.com, Inc (AMZN) in driving index performance. As its float expands through the upcoming lockup expirations, passive funds tracking the Nasdaq-100 and broader growth benchmarks could become even more exposed to the stock.
For ETF investors, this week's lockup expiration is about more than insider selling. A larger public float increases SpaceX's investable market cap, setting the stage for greater representation across passive funds over time. With two more lockup expirations on the horizon, the company's ETF footprint could keep growing even if its overall valuation stays flat.
So, if you own a Nasdaq ETF, you're not just betting on tech giants anymore. You're also betting on a rocket company, and that bet is about to get a little bigger.
