Rocket Lab stock tumbled 10.8% on June 12 as SpaceX’s record-breaking $75 billion initial public offering sparked a sector rotation that pulled capital away from smaller publicly traded space companies into the aerospace giant’s debut.
SpaceX priced its 555.6 million shares at $135 each on June 11, according to TechCrunch, and began trading on the Nasdaq under ticker SPCX the following day. The offering valued the company at approximately $1.77 trillion, making it the largest IPO in history, according to the Los Angeles Times. Shares opened at $150 on June 12, an 11% jump above the IPO price, and climbed further to close at $161, marking a 19% first-day gain that pushed the company’s market cap above $2 trillion, per CNBC.
The SpaceX debut triggered a sharp reallocation across the space sector. Rocket Lab shares fell 10.79% that day, according to KoalaGains, while other space-focused companies suffered steeper losses: Firefly Aerospace dropped more than 18%, and Virgin Galactic plummeted 24%, according to CNBC. AST SpaceMobile, Redwire, and Intuitive Machines each fell at least 10%, the outlet reported.
Analysts characterized the moves as capital rotation rather than a fundamental reassessment of Rocket Lab’s business. “Rocket Lab’s nearly 10% drop on the day of the SpaceX IPO was by far the tamest of its big peers, indicating rotation of funds rather than a fundamental judgment,” according to TradingKey. The rotation reflects investors shifting limited capital toward the newly public SpaceX rather than abandoning belief in smaller competitors.
The timing of the decline is notable given Rocket Lab’s strong recent performance. The company reported record first-quarter 2026 revenue of $200.3 million, up 63.5% year-over-year, and a backlog of $2.2 billion—more than double the prior year—according to CNBC on May 8. The company also beat Wall Street guidance across multiple metrics, including margin and adjusted EBITDA. Despite these fundamentals, investor attention shifted decisively toward SpaceX’s debut, illustrating how a dominant IPO can temporarily overshadow smaller competitors even when their operational results remain strong.
The sector rotation pattern echoes dynamics seen in other high-profile IPOs, where the arrival of a flagship company can briefly redirect capital flows regardless of the underlying health of existing players. Whether Rocket Lab’s stock recovers from the SpaceX-driven dip will depend on sustained execution against its $2.2 billion backlog and investor appetite for diversified exposure to the commercial space market beyond SpaceX.
Sources
- TechCrunch — SpaceX IPO pricing at $135 per share and confirmation of 555.6 million shares sold
- Los Angeles Times — SpaceX valuation at $1.77 trillion and IPO raise of $75 billion
- CNBC — SpaceX first-day gains to $161, market cap exceeding $2 trillion, and sector competitor losses on June 12
- KoalaGains — Rocket Lab stock decline of 10.79% on June 12, 2026
- Barron’s — Rocket Lab closing down 10.8% and characterization of sector rotation
- TradingKey — Analysis of Rocket Lab’s 10% drop as rotation rather than fundamental judgment
- CNBC (May 8, 2026) — Rocket Lab Q1 2026 record revenue of $200.3 million (up 63.5% YoY) and $2.2 billion backlog
