Lam Research (LRCX) Stock This Week: A Fresh 52‑Week High, Then a Sharp Tech-Led Selloff — What to Watch in the Week Ahead (Updated Dec. 13, 2025)
Lam Research shares fell 4.85% to $160.52 Friday, ending a five-day rally and erasing weekly gains after hitting a 52-week high midweek. The drop followed a sector-wide selloff triggered by Broadcom’s outlook and a rotation out of high-growth tech. LRCX closed the week down 1.4% from Monday but up 1.1% from the prior Friday. The Philadelphia Semiconductor Index lost 5.1% Friday.