The longtime Wall Street investor Marshall S. Cogan has put his closely held holding company, Trace International Holdings Inc., into bankruptcy protection, the company said. The action, taken late on Wednesday, came after the company was hurt by loans tied to stocks in companies he controlled and other debts, the announcement said. Trace International, which owns nearly half of the publicly traded Foamex International Inc., listed assets of $135 million and liabilities of $280 million, according to the filing, which was made in United States Bankruptcy Court for the Southern District of New York. The biggest unsecured creditor of Trace International is Bank of Nova Scotia, which is listed as having outstanding loans of $170 million. Other creditors include the Recticel Foam Corporation, which is owed $38 million, and Societe Generale de Belgique, which is owed $24 million.