By Felix Onuah, Chijioke Ohuocha2 Min ReadABUJA( Reuters)-Nigeria has introduced custody rules for its 4 trillion naira($ 9.7 billion) fund management industry to protect investors and further develop its capital markets, the Securities and Exchange Commission( SEC) said on Sunday. Before the rules, investment managers warehoused securities and cash, which meant that investors could lose in the event of a manager being declared bankrupt or insolvent.“ All client assets managed under discretionar