Bank stocks are shares of ownership in publicly traded banking companies, such as commercial banks, investment banks, or regional banks. These companies had the highest dollar trading volume of any Bank stocks within the last several days. JPMorgan Chase & Co. (JPM)JPMorgan Chase & Co. is a financial holding company, which engages in the provision of financial and investment banking services. It focuses on investment banking, financial services for consumers and small businesses, commercial banking, financial transaction processing, and asset management. It operates through the following segments: Consumer Banking and Lending, Commercial Banking, Corporate and Investment Banking, and Wealth and Investment Management.