Today's biggest winners and losers in the stock market.

On this episode of Stock Movers: 

Listen for comprehensive cross-platform coverage of the US market close as heard on Bloomberg Television, Bloomberg Radio, and YouTube with Romaine Bostick, Katie Greifeld, Carol Massar and Tim Stenovec.

- USA Rare Earth (USAR) rose after the company agreed to acquire Brazil’s Serra Verde Group in a $2.8 billion cash-and-stock transaction, marking one of the largest deals in the rare-earths industry. 

- Psychedelic-linked firms like Compass Pathways (CMPS) skyrocketed after President Trump signed a weekend executive order to expedite research and access. US-traded shares of Compass Pathways spiked as much as 53% while AtaiBeckley surged by 37%. GH Research PLC jumped 34% and Definium Therapeutics, Inc. rallied 16%. The AdvisorShares Psychedelics ETF (PSIL) also climbed as much as 20% — touching its highest intraday level since July 2023.

- AST SpaceMobile (AST) shares dropped as much as 14% after Blue Origin’s flagship New Glenn rocket failed to correctly place a satellite made by the Texas-based company in its intended orbit.