JPMorgan Chase & Co. shares experienced a significant decline, falling 7.11% on September 10, 2024, marking their steepest single-day drop since June 2020. The decline was triggered by a warning from the bank's President, Daniel Pinto, who stated that analysts have been too optimistic in projecting next year’s expenses and net interest income. Additionally, JPMorgan's Q3 outlook indicated lower-than-expected capital markets activity and flat revenue, further contributing to the stock's decline. JPMorgan shares were down 3.9% to $208.43 before the larger drop. Other bank stocks, including Bank of America, also saw declines, with Bank of America shares down 1.3% to $38.95.