Billionaire Israel Englander of Millennium Management sold 740,500 shares of Nvidia, cutting his stake 7%. He also bought 986,400 shares of Palantir, increasing his stake 302%. The trades detailed ...

Ken Griffin loaded up on Alphabet stock in Q1, too. His Citadel Advisors hedge fund boosted its position in the Google parent by nearly 56%. Fellow billionaire David Tepper bought more than 128,000 ...