China has arrested former executives at two brokerages on charges of insider trading, the securities watchdog said, as part of a crackdown on market malpractice that the new head of the agency has said will be one of his top priorities. The China Securities Regulatory Commission (CSRC) detailed on its website four cases of market manipulation and insider trading that it has investigated, including two that led to the arrests of former executives at Southwest Securities Co Ltd (600369.SS) and Northeast Securities Co Ltd (000686.SZ). The cases are the latest in an increasingly high-profile campaign by CSRC chief Guo ... (full story)