Upstart Stock News Today: UPST Jumps on Tech CU Partnership as Wall Street Weighs 2026 Outlook (Dec. 18, 2025)
Upstart Holdings, Inc. (NASDAQ: UPST) is back in the spotlight on December 18, 2025 (18.12.2025), with the AI-lending stock pushing higher as traders react to fresh partner momentum in credit unions—and try to square that optimism with a still-volatile macro and a sharply divided analyst community. Shares were trading around the high-$40s on Thursday, up roughly 8% on the session at the time of this writing. Investing.com That move follows a choppy stretch for UPST, where single-day swings have become a feature, not a bug. Today’s catalyst is fairly clear: a new credit union partnership that reinforces Upstart’s strategy of