Why Rocket Lab Stock Surged 40% in the First Half of 2025

  • Shares of space flight company Rocket Lab (RKLB -0.18%) soared 40.4% in the first half of 2025, according to data from S&P Global Market Intelligence. A fast-growing company in the exciting space economy, Rocket Lab is up close to 600% in the last year and is inching its way closer to competing with SpaceX, which now has a reported valuation of $400 billion.