FBOP Corporation was a financial services company based in Oak Park, Illinois, United States. As of mid-2009, it had $18.5 billion in assets and was the 46th largest bank holding company in the United States. On October 30, 2009, FBOP's banking subsidiaries were closed by their chartering agencies and the Federal Deposit Insurance Corporation was appointed as their receiver. The company had over 4064 employees. U.S. Bancorp acquired all nine of FBOP's nine banks on the day of closure, but later sold the three Texas-based banks to Prosperity Bancshares.