Cipher Mining (CIFR) Stock Today: Volatile Pullback After Google-Backed AI Deal – November 21, 2025
On Friday, November 21, 2025, Cipher Mining Inc. (NASDAQ:CIFR) traded lower after a week of heavy news and sharp moves that have put the bitcoin miner–turned–AI infrastructure player firmly on traders’ radar. As of the latest trade on Friday afternoon, CIFR stock was changing hands around $14.29, down roughly 2% on the day and extending a pullback from Thursday’s post-news spike. Despite today’s red ink, the stock remains one of 2025’s standout performers, having surged well over 150% year to date, aided by surging bitcoin prices and a rapid pivot into high-performance computing (HPC) and AI data-center hosting. Yahoo Finance+1