Stocks moved on a mix of corporate news, government action, and record commodity prices Monday, with GameStop surging after a high-profile investor endorsement and Booz Allen Hamilton tumbling following a federal contract cancellation.

GameStop jumped almost 7% after famed investor Michael Burry revealed he has been buying shares, calling it a “long-term value play” rather than a short-squeeze bet. “I own GME. I have been buying recently,” Burry wrote in a Substack post.

Booz Allen Hamilton slid more than 5% after the U.S. Treasury Department canceled all contracts with the consulting firm, totaling $21 million in obligations. The move follows a leak of tax records for President Donald Trump and billionaires Jeff Bezos and Elon Musk by a Booz Allen employee.

Gold-related stocks advanced as the precious metal soared past $5,100 an ounce to a new record. Newmont gained more than 3%, and Hecla Mining rose over 5.5% after beating production guidance.

In deal news, Allied Gold climbed more than 4% after agreeing to a CA$5.5 billion cash acquisition by Hong Kong’s Zijin Gold. IonQ fell 3% on its $1.8 billion deal to buy SkyWater Technology, which rose 6%.

CoreWeave surged 9% after Nvidia committed an additional $2 billion investment to expand AI infrastructure. Nvidia shares slipped 0.6%.

Revolution Medicines plunged over 16% after reports that Merck ended acquisition talks, while Lands’ End soared 40% on a joint venture with WHP Global.