SpaceX (SPCX) shares advanced about 2% in early trading Monday, reaching near $156, as the company's weighting in the Nasdaq-100 more than doubled in the index's quarterly rebalance. The move extends a recovery from August lows and comes as the stock enters a period of heightened index exposure and several potential catalysts.
The quarterly rebalance, effective Monday, raises SpaceX's weight in the Nasdaq-100 to 2.82%, up from roughly 1.3% previously. This adjustment narrows an unusual gap between the company's market value—now above $2 trillion, making it the seventh-largest Nasdaq-100 constituent—and its prior index influence, which ranked outside the top 20.
Passive funds adjust to higher weighting
The increase stems from SpaceX's addition to the index in July, when much of its stock was locked up and unavailable for trading. Nasdaq had modified its rules to allow newly listed large-caps to enter sooner and removed the 10% public float requirement, but the effective weight remained low initially.
Now, with a larger index share, passive funds tracking the Nasdaq-100 must rebalance their portfolios. Over 200 investment products track the index, with more than $800 billion in assets under management globally. This rebalancing is expected to generate additional demand for SpaceX shares, providing a supportive tailwind.
Lockup overhang persists
Despite the positive index effect, SpaceX faces a significant supply overhang. Unlike a traditional IPO with a single 180-day lockup, SpaceX structured its offering with roughly a dozen staggered unlock dates. The most recent major release saw shares fall about 3% as up to 319 million Class A shares became tradable, worth roughly $49 billion at then-current prices. An additional 59.1 million affiliate shares unlocked the following day.
More releases are scheduled through 2026. Around 320 million shares are expected to become eligible on September 24, followed by similar amounts on October 9 and October 24. The largest potential release is expected two trading days after the company reports third-quarter results, likely in late October or early November, when up to 1.3 billion shares—about 28% of the relevant share pool—could become sellable. December 8 marks the 180-day expiration for remaining non-Musk insider shares.
By the end of 2026, roughly 4.9 billion SpaceX shares are expected to be tradable, creating a continuing supply overhang even as the stock recovers. This gives early investors more opportunities to realize gains, but also adds downward pressure.
Starship Flight 14 as a catalyst
Investors are also watching the next major Starship test. SpaceX has targeted Starship Flight 14 for as early as September 28, pending regulatory approval, after previously aiming for September 22. The mission has a 75-minute launch window starting at 8:15 a.m. ET from Starbase in Texas.
Flight 14 is expected to be the first revenue-generating Starship mission, according to CFO Bret Johnsen, speaking at a recent Goldman Sachs conference. The spacecraft will carry and deploy 26 Starlink Version 3 satellites, supporting an upgrade of SpaceX's satellite constellation. This mission is critical to the long-term investment case, as much of SpaceX's growth depends on Starship becoming a reusable, high-frequency launch system.
Pivotal Research Group analyst Jeffrey Wlodarczak has set a $220 price target, tied to assumptions that Starship vehicles can achieve 20 to 50 flights, low refurbishment costs, and rapid turnaround times. The success of Flight 14 will be a key test of those assumptions.
For more on related developments, see SpaceX's path to $200 and Starship Flight 14 schedule update.
This article is for informational purposes only and does not constitute financial advice.
