Memory-chip makers Micron and Sandisk scored price-target hikes from Wall Street analysts on Thursday. Both stocks are at record highs.

UBS analyst Timothy Arcuri raised Micron Technology's price target to $1,625 from $535, sending shares up 8.4% premarket on AI memory demand optimism.

UBS raises Micron Technology's price target to $1,625 from $535, the highest on Wall Street, as AI-driven high-bandwidth memory demand surges.