
Rocket Lab (RKLB) stock fell 39% between mid-June and September 10, while the S&P 500 gained 2.4%. The stock fell 39%—about twice as far as L3Harris Technologies, down 18.9%, and far more than Lockheed Martin, down 1.3%, and Northrop Grumman, down 5.3%—suggesting company-specific headwinds compounded broader sector softness. Yet the company just posted record revenue, and the CEO counts more than $1 billion of new contracts since Q2 2026 began. None of that changed the Neutron rocket's calendar.

