Ken Griffin’s Citadel is heading for its worst annual return since 2018 after wagers on natural gas fizzled. The flagship fund gained 9.3% through Dec. 18, according to a person familiar with the results. Nishant Kumar reports on Bloomberg Television. CORRECT: This video misattributes the percentage of commodities’ contribution to total annual gains. Citadel earned about $4 billion from commodities in each of the following two years. That represented about a third of its total gross gains in those years.