Banking service is the most popular in the world. Most banks passed the Federal Reserve's so-called stress test. But Citigroup did not and that shows that many big bank stocks are still incredibly risky investments. JPMorgan Chase JPM , Fortune 500)sparked the rally by jumping the gun. Results of the Fed's stress tests, or Comprehensive Capital and Analysis Review, were not due to be released until Thursday. But JPMorgan Chase announced Tuesday it was raising its dividend and launching a new $15 billion stock repurchase plan ... and pointed out that the Fed had already completed the CCAR and "did not object" to the bank's plan. Shine on you crazy (Jamie) Dimon! That prompted the Fed to move up the stress test announcement to after the closing bell Tuesday. Now that the results are out, it's time to look at the winners and losers. The good news is that 15 of the top 19 banks should be able to withstand the Fed's worst-case crisis scenario. (Baby, you can ...