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,

The bank said profit rose 50% to $14 billion in the fourth quarter as noninterest expenses fell 7% from a year earlier.

Big bank profits surged in the fourth quarter and Wall Street roared back to life, with net income rising 50% at JPMorgan Chase and more than doubling at Goldman Sachs.