KEY POINTS
  • Investment banks make a bulk of their money on trading stocks and bonds for clients.
  • As markets churned in December though, investors waited out the volatility on the sidelines.
  • That meant banks weren’t making as much money, which is coming to the surface this week as they report financial results for last few months of 2018.
  • J. P. Morgan and Citi both got hit by lower trading revenue. Goldman Sachs and Morgan Stanley, set to report in the next few days, could also reveal that they took a hit last quarter.
JPMorgan Chase chairman and CEO Jamie Dimon.

One of Wall Street's big money-makers has been disappointing for major banks lately.

Trading stocks and bonds on behalf of clients has historically been a cash-cow, especially in choppy markets. But as the top U.S. banks report results from the last quarter of 2018, it's becoming clear that trading wasn't a boost to banks' bottom lines.