Micron Technology stock jumps in premarket after $7.8 million insider buy as memory-chip rally rolls on
New York, Jan 16, 2026, 08:34 (ET) — Premarket Micron Technology (MU.O) shares jumped 5.7% to $355.65 in premarket trading Friday, following a close of $336.63 the day before. According to a regulatory filing, director Teyin Mark Liu bought 23,200 shares between Jan. 13-14 at roughly $337 each and now holds 25,910 shares. (The Wall Street Journal) Memory-chip stocks continue to lead semiconductor gains this week. Western Digital (WDC.O), Seagate Technology (STX.O), and SanDisk (SNDK.O) all climbed in early trading, while the iShares Semiconductor ETF edged higher Friday, Reuters reported. Linh Tran, senior market analyst at XS.com, noted that the