CoreWeave (CRWV) stock closed on December 19, 2025, at $83.00, marking a sharp rebound of +22.64% ($15.32) in that session. This surge was largely fueled by the announcement that CoreWeave joined the U.S. Department of Energy’s Genesis Mission, boosting credibility, and Citigroup resuming coverage with a "Buy" rating, despite assigning a "High Risk" designation and cutting the target to $135 from $192.