Two prominent hedge funds slashed their positions in Palantir and bought stock in Circle Internet Group during the third quarter.In the third quarter, two billionaire-led hedge funds sold Palantir Technologies (PLTR 5.85%) and bought Circle Internet Group (CRCL 4.00%), a fintech company that held its initial public offering (IPO) earlier this year.Israel Englander's Millennium Management sold 4.6 million shares of Palantir, reducing its position by 91%. The hedge fund also added 500 shares of Circle, increa ...