UPDATE: Option-ARM Mortgages Turning Worse Than Subprime (Updates with companies declining to comment and further details in first, second, fourth and 13th paragraphs.) NEW YORK (Dow Jones)--For the third straight month, option adjustable-rate mortgages are generating proportionally more delinquencies and foreclosures than subprime mortgages, the scourge of the housing crisis. A further acceleration of troubles among the loans could mean higher-than-expected losses for Wells Fargo & Co. (WFC) and JPMorgan Chase & Co. (JPM), as well as the Federal Deposit Insurance Corp.'s own insurance fund. "The realization of the issues related to option ARMs is just beginning," says Chris Marinac,...