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.

JPMorgan's strong results bode well for the banking sector, which is seeing a revival in dealmaking and fundraising activities as the U.S. Federal Reserve cuts interest rates to bolster the economy. Goldman Sachs' profit also jumped after a bumper quarter for its investment bankers and traders.