Key Points During the second quarter, Citadel reduced its exposure to Palantir by 48%. At the same time, the firm doubled down on its position in Chipotle Mexican Grill. Chipotle's business has been sluggish for several quarters, but the market may be overly sour on the stock. 10 stocks we like better than Palantir Technologies › When Ken Griffin moves, Wall Street listens. The billionaire founder of Citadel isn't known for emotional investing or chasing hype. Rather, his trades are guided by dat ...