Dutch high-frequency trader under China stock-index probe

Dutch high-speed trading firm IMC BV is being investigated by authorities in China for its activities in the country's stock-index futures market last year.

The firm has received inquiries from the China Securities Regulatory Commission related to futures trading at its Shanghai-based affiliate, said IMC spokesman Ian Bickerton. Discussions between IMC and the regulator have been constructive and positive, Bickerton said.

The CSRC didn't reply to a fax seeking comment.