Bloomberg journalists discuss today's biggest winners and losers in the stock market. Listen for analysis on the companies making news on Wall Street.

Israel Englander's Millennium Management added 986,457 shares of Palantir, quadrupling its position. The hedge fund also sold 740,500 shares of Nvidia, trimming its stake by 7%. Ken Griffin's Citadel Advisors added 902,486 shares of Palantir, tripling its position. The hedge fund also sold 1.5 million shares of Nvidia, reducing its stake by 50%.

Nvidia stock has outperformed the market hugely since the pandemic with investors flocking to invest in this transformation AI-enabling stock.