Malaysia's regulator could broaden the scope of its structured warrants market, according to local issuer AmInvestment Bank. However, it added that it will try to restrict its listed warrants business to simple delta-one structures for retail clients. "With zero-strikes, we are expecting to provide more variety in terms of underlyings to the listed programme," said AmInvestment's Ng Ee Fang, following its debut linked to Warren Buffet's Berkshire Hathaway. The idea seems to have caught on, she