Jamie Dimon has thoughts on the loan rush: "I see a couple of people doing some dumb things"

Jamie Dimon said he sees echoes of pre-2008 excess as competition heats up.

Fabrice Coffrini/AFP/Getty Images

• JPMorgan CEO Jamie Dimon sees parallels with pre-2008 markets today.
• He said some people are doing "dumb things" to boost lending income.
• Dimon's comments come as worries swirl over risks in the private credit markets.

Jamie Dimon has a warning for Wall Street: The scramble to juice profits is starting to look uncomfortably familiar.

The longtime...