Seagate Technology (STX) Stock: Weekly Recap and Week-Ahead Outlook as Nasdaq-100 Inclusion Looms (Updated Dec. 12, 2025)
Seagate Technology shares fell 6.56% Friday to $287.64 after hitting a 52-week high of $308.93 Thursday. The drop came on heavy volume as tech stocks slid amid renewed “AI bubble” concerns. After the close, Nasdaq announced Seagate will join the Nasdaq-100, effective Dec. 22. Index inclusion is expected to drive trading volume and volatility in the coming week.