Investors may be surprised to learn which big bank performed the worst last year. No, it wasn't Bank of America (NYSE:BAC) or Citigroup (NYSE:C), the most frequently maligned too-big-to-fail banks. Instead, it was Wells Fargo (NYSE:WFC), the nation's fourth largest lender by assets and arguably the most respected of the bunch. In the video below, Fool contributor John Maxfield explains how this irony came to be.

John Maxfield owns shares of Bank of America. The Motley Fool recommends Wells Fargo. The Motley Fool owns shares of Bank of America, Citigroup, and Wells Fargo. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.