Lam Research (LRCX) Stock After Hours Today (Dec. 18, 2025): Why Shares Jumped and What to Watch Before Friday’s Open
Lam Research Corporation (NASDAQ: LRCX) is ending Thursday’s session on a strong note—and traders are now shifting to the “what’s next?” checklist for Friday, December 19. LRCX recap: a big Thursday rally, then a quiet after-hours tape Lam Research shares closed at $164.70, up about 6.3% on the day, after swinging between roughly $156.90 and $168.20 in regular trading. Barchart.com After the closing bell, trading activity looked muted relative to the day session, with the stock hovering around the mid-$160s as the market digested a wave of analyst commentary and a newly filed insider transaction disclosure. SEC Why Lam Research