Over Uno, Citadel’s Griffin Reveals His Mistakes of 2008 Ken Griffin, who started hedge fund firm Citadel when he was 22, discusses how he felt in 2008 when everything he had built was at risk. Related Articles Premium Citadel Added to Its 2022 Gains in September Stephen Taub Hedge Funds A Veteran of Melvin Capital Preps New Vehicle Stephen Taub Sponsored Content Market Volatility May Boost Distressed Credit Opportunities Sponsored by Fidelity Investments