Key Points During the second quarter, Citadel sold 48% of its position in artificial intelligence software developer Palantir Technologies. At the same time, Citadel increased its position in AI chip king Nvidia by more than 400%. 10 stocks we like better than Nvidia › Ken Griffin is not your typical Wall Street billionaire. As the founder and CEO of Citadel, he leads one of the most sophisticated and consistently profitable hedge funds in history. He has more than earned his reputation for being a ...