New York Community Bancorp (NYCB) shares dropped about 10% after the regional bank disclosed another quarterly net loss and girded for further trouble in commercial real estate lending. NYCB logged a second-quarter loss of $323 million, compared with net income of more than $400 million a year earlier. The Hicksville, N.Y.-based bank said more loans in commercial real estate had gone bad and that it had added to its reserves for potential future losses.