Shanghai-listed Haitong Securities said yesterday it will buy a 52.86% stake in Taifook Securities from NWS Holdings for HK$1.82 billion ($235 million), triggering an open offer to Taifook's retail shareholders.Haitong is paying NWS HK$4.88 per share of Taifook. The price represents a premium of 0.62% over the closing price of Taifook on the Hong Kong stock exchange on November 13, the last trading day before shares were suspended. It also represents a premium of 41.79% over the average closing price of Taifook shares for the 30 consecutive trading days up to November 13. ...