Citadel trading account among more than 30 suspended in China

The mainland trading account of American hedge fund Citadel was one of over 30 suspended by the China Securities Regulatory Commission so far in its latest effort to stabilize the country’s volatile stock markets, The New York Times reported, citing an email announcement from the company. On Friday the commission said it would strengthen its supervision of program trading, which can include high speed, algorithmic or other computer-driven trading strategies, closing 24 that day and more than ten additional accounts Monday. The latest closures came a week after the Shanghai Composite Index fell 8.5%, its largest one-day loss in eight years. Despite the new measures, said index closed Monday down 1.11%.