Citibank, an American multinational investment bank, has lost about $500 million it mistakenly transferred to a group of companies that loaned money to embattled cosmetics firm Revlon. The bank which is Revlon’s loan agent was supposed to send about $8 million in interest payments to the cosmetic company’s lenders. Instead, Citibank accidentally wired almost 100 times that amount, including $175 million to a hedge fund. In all, Citi accidentally sent $900 million to Revlon’s lenders. Some of the lenders returned about $400 million, while 10 asset managers refused to return the transferred...