JPMorgan Chase CEO Jamie Dimon says he does not know whether the bank broke any laws in the surprise $2 billion loss by one of its trading groups.

In an interview with NBC's "Meet the Press," Dimon says regulators should look at the matter.

"We are totally open to regulators, and they will come to their own conclusions," he says. The full interview airs Sunday. Excerpts were released Friday by NBC.

Dimon says the bank was "sloppy" and "stupid" in its handling of the trades.