Now that the largest six U.S. banks have reported their fourth-quarter results, it is clear that investors are continuing to celebrate the group’s performance. And although the banks have varying business models,

JPMorgan Chase reported fourth-quarter results Wednesday that came in above analysts' expectations as investment banking fees rose.

With the U.S. economy humming along, JPMorgan Chase (NYSE:JPM) turned in stronger-than-expected Q4 earnings, with net interest income staying flat with Q3 and investment banking and capital markets-related revenue strengthening.