JPMorgan Chase CEO Jamie Dimon warned Monday about the risks of record U.S. deficits, tariffs and international tensions. Dimon, the chairman of the biggest U.S. bank by assets, said stock markets aren't properly representing the possibility of higher inflation and even stagflation.

Though the benchmark S&P 500 was down in Monday's pre-market session and into early trading, it recouped most its losses and closed out the day virtually flat, increasing 0.09%, after investors largely shrugged off a credit downgrade on U.

The JPMorgan CEO said the bank will allow investors to buy bitcoin while warning against stagflation and sounding a hopeful note on regulations.