Robert Way/iStock Editorial via Getty Images My last article on U.S. Bancorp (NYSE:USB), Opportunity Knocks: Why I'm Banking On U.S. Bancorp, rated the stock as a Buy. That Buy rating was largely based on the stock’s historically low valuation and high yield. Since then, the total return on USB is well over 17%. However, before you write me a “Thank You” note, know that the S&P 500 has risen just over 40% in that time frame. Far from being humbled by those poor results, I view the relatively lackluster  ...