The annual report of the Federal Reserve Bank of St. Louis examines banking mergers and acquisiitons over the past two decades. "Our goal is to make certain that the banking industry evolves in a way that preserves the benefits of competition and ensures a safe and sound banking system. So, even if your bank has changed owners three times in the past two years, rest assured that the Fed (or another regulator) has scrutinized each transaction to make sure that the best interests of the industry, the local market, the bank and you are upheld."