Big Bank stock slide is a buying opportunity, says Piper Sandler's Harte

Bank stocks, including Dow component JPMorgan Chase, sank in Monday's premarket as leaked U.S. government files showed that banks reported to regulators $2 trillion of suspicious activity over nearly two decades. Germany's largest lender Deutsche Bank appears to have facilitated the most transactions by far in dollar amounts, followed by J.P. Morgan, the U.K.'s Standard Chartered and Bank of New York Mellon. Jeff Harte, principal at Piper Sandler, joins "Squawk Box" to discuss.