Flagstar Financial is stemming the bleeding. A top lender to the New York City rent-stabilized housing market, the bank is still facing profitability challenges. But on Friday, it posted its lowest net loss since 2023 at 19 cents per share. Flagstar has lowered its exposure to the multifamily housing market by 12 percent since last summer’s earnings release. The earnings show measured progress as the bank aims to return to profitability in the fourth quarter. Early last year, the compan...