Ocwen’s pending purchase of Litton Loan Servicing’s $42.32 billion portfolio will make Ocwen the largest subprime servicer while also potentially increasing integration problems. Ocwen has faced some issues handling the $24.9 billion HomEq portfolio it acquired last year, and Litton’s business practices are substantially different from Ocwen’s. The combined Ocwen-Litton subprime portfolio is $96.42 billion as of the end of the first quarter of 2011, according to Inside Nonconforming Markets. If the transaction is completed as anticipated later this year, Ocwen will...