Brian Moynihan has been at the helm of Bank of America (BAC 2.30%) for almost four years, and the bank has had plenty of ups and downs. Since Warren Buffett and Berkshire Hathaway (BRK.A 0.53%) (BRK.B 0.59%) made an investment in the bank in 2011, shares have rallied significantly. In this segment of The Motley Fool's financials-focused show, Where the Money Is, banking analysts Matt Koppenheffer and David Hanson discuss Bank of America and what Brian Moynihan still needs to prove.