Rocket Lab’s RKLB Falls 5.39% After Neutron Stage 1 Tank Rupture on January 21, 2026

Rocket Lab’s RKLB stock slid 5.39% to $83.08 on January 22, 2026, after the company reported a rupture in the Neutron rocket’s Stage 1 tank during qualification testing a day earlier. The incident has sparked concern about possible delays to the Neutron launch schedule, even as Rocket Lab completed a successful Electron mission deploying two satellites for Open Cosmos.