SINGAPORE: The former CEO and directors of a company linked to an alleged billion-dollar nickel investment fraud case were charged on Thursday (Mar 7), said the Monetary Authority of Singapore (MAS). Shim Wai Han, Doo Chun Ki and Tan Kay Siong held several top positions in Envysion Wealth Management, currently known as Hui Xun Asset Management. Envysion was a holder of a capital markets services licence for fund management. The company was the manager of Envysion Global Investments VCC, which established the Envysion Commodity Strategy Fund.