SpaceX Drops 4% Amid Share Supply and Valuation Concerns; AST SpaceMobile Falls 6%

SpaceX (NASDAQ:SPCX | SPCX Price Prediction) stock is down 4% today to $148.13 as investors weigh a looming share unlock, a proposed $52 million sale by President and COO Gwynne Shotwell, and concerns about the company’s valuation. AST SpaceMobile (NASDAQ:ASTS) stock is falling 6% to $60.08, while Rocket Lab (NASDAQ:RKLB) stock is down 2% to $70.28, extending weakness across several space-related names.

The Procure Space ETF (NASDAQ:UFO) is down 2% to $43.22, compared with a 0.89% decline for the Invesco QQQ Trust ETF (NASDAQ:QQQ) to $740.81. The broader weakness suggests today’s pressure isn’t limited to SpaceX, although SpaceX stock has its own supply and valuation issues that could make the next several sessions particularly interesting.

SpaceX Faces Another Wave of Potential Supply

SpaceX is approaching another lockup expiration on September 24, when about 328 million shares are scheduled to become eligible for sale. The expiration doesn’t require holders to sell, but the additional potential supply could weigh on SpaceX stock if early investors, employees or other shareholders decide to monetize their holdings.

The supply concern comes alongside Shotwell’s disclosed plan to sell 342,170 shares with an aggregate value of nearly $52 million. The filing indicates that Shotwell acquired the shares through a cash exercise of stock options, and the transaction falls within a trading plan adopted in June, meaning the planned sale doesn’t necessarily represent a fresh change in her outlook for SpaceX.

Valuation Keeps the Debate Alive

SpaceX stock also faces a valuation question after a powerful run since the company’s June IPO. The stock’s current level remains above the $135 IPO price, while investors are assigning substantial value to Starlink, launch operations and newer opportunities involving artificial intelligence infrastructure.

The bullish case has several potential catalysts, including continued Starlink growth and SpaceX’s upcoming Starship test flight scheduled for September 28. Barron’s reported that SpaceX had about 1.4 gigawatts of AI computing capacity at the end of the second quarter and plans to expand that capacity substantially, although some of the company’s more ambitious AI-in-space plans remain dependent on Starship’s development.

Space Stocks Are Feeling the Pressure

Rocket Lab stock and AST SpaceMobile stock are also falling today, showing that investors aren’t treating the weakness as an issue unique to SpaceX. The Procure Space ETF’s 2% decline versus the Invesco QQQ Trust ETF’s 0.89% decline reinforces the idea that space-related stocks are experiencing greater selling pressure than the broader technology market.

Rocket Lab has its own potential catalysts, including the planned Neutron rocket and its proposed acquisition of Iridium Communications, while AST SpaceMobile is continuing to build its satellite-based cellular network. Those opportunities could give both companies substantial long-term growth potential, although today’s declines also highlight the volatility investors may encounter across the space sector.

The Next Few Sessions Could Be Crucial

For SpaceX stock, the key question may be whether the additional share supply creates sustained selling pressure or is absorbed without significantly changing the market’s view of the company. Investors can watch for whether SpaceX stock stabilizes around current levels as the September 24 unlock passes, while the September 28 Starship test provides another scheduled event that could shift attention back toward operations.

The bull case remains tied to SpaceX’s Starlink business, launch capabilities and potential AI infrastructure expansion, while the bear case centers on valuation and the possibility that additional shares coming available could weigh on the stock. Investors considering SpaceX stock or other space-related names may want to keep their position sizes moderate given the combination of elevated valuations, share-supply uncertainty and substantial event-driven volatility.

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