RKLB ▼ -1.9% - Rocket Lab Corporation $RKLB - Rocket Lab Successfully Launches 16th Electron Mission Of The Year, Solidifies Status as World’s Leading Small Launch Provider Rocket Lab stock declined 1.9% today despite the company's announcement of its 16th successful Electron rocket launch of the year, which reinforces its position as the world's leading small-lift launch provider. The pullback suggests investors may have already priced in the company's recent launch cadence, or broader market conditions outweighed the operational achievement. 11-SEP-2026 12:43 AM ET