Tycoon Hwang Chou-shiuan, founder of Hong Kong Parkview Group, is facing an insider trading probe for alleged illegal stock dealings with China oil giant Unipec. Hwang is alleged to have traded millions of Hong Kong Parkview shares in August 1993 while he was negotiating a private placement of 89 million shares with China International United Petroleum and Chemical Company Ltd (Unipec), a tribunal heard yesterday. Investigations by the Securities and Futures Commission revealed that Hwang traded 3.688 million shares between August 13 and August 16. He allegedly purchased 974,000 shares on August 13 - four days before the Unipec deal was finalised. Group vice-president Peter Sin Kit-leung is also alleged to have made significant purchases of the shares. Hong Kong Parkview, run by Hwang's sons George and Victor, owns part of the Tai Tam residential complex of the same name. The case is the fifth to be heard by the Insider Dealing Tribunal since it was set up. It will begin its substantial hearing into the allegations against Hwang on October 14.