SpaceX shares (Nasdaq: SPCX) fell 5.4% on Thursday, July 17, 2026, closing at $123.99 and extending a multi-session decline that has pushed the stock roughly 8% below its $135 IPO price, just five weeks after the company completed the largest initial public offering in U.S. history.
Volume was heavy, with more than 83 million shares changing hands on the Nasdaq, well above recent averages. At the closing price, SpaceX carries a market capitalization of approximately $1.63 trillion, down from the roughly $1.77 trillion valuation implied by its June 12 offer price, per CNBC's coverage of the IPO pricing.
What is driving SPCX lower
The selloff follows a multi-session decline that CNBC had already flagged by July 13, noting that SpaceX shares were "sinking for a second-straight day, nearing $135 IPO price" amid investor concern over an aborted Starship test flight. By Thursday's close, the stock had broken through the IPO threshold and extended losses further.
The aborted test raised questions about the near-term schedule for Starship, the heavy-lift rocket that featured prominently in SpaceX's IPO roadshow as a key source of future commercial revenue. SpaceX has not publicly commented on the test timeline. The Federal Aviation Administration, which issues launch licenses for Starship missions, also plays a role in when the next flight can occur; past FAA reviews have stretched several months.
The current share price represents a decline of roughly 45% from SPCX's intraday high above $225, reached on June 16, four days after the company's market debut. IPO investors who bought at the $135 offer price are now sitting on a loss of approximately 8.2%.
