Rocket Lab (RKLB) Stock After Hours Today (Dec. 15, 2025): Why Shares Fell After a Successful JAXA Launch—and What to Watch Before Tuesday’s Open
Rocket Lab shares fell 9.89% to $55.41 Monday despite completing a key mission for Japan’s space agency. The stock dropped another 1.55% after hours to $54.55. Analysts cited profit-taking after a strong year-to-date rally and concerns about high valuation. Broader market weakness also weighed on the stock.