Fiserv, JPMorgan Chase & Co., and Berkshire Hathaway are the three Financial stocks to watch today, according to MarketBeat’s stock screener tool. Financial stocks are shares of companies that provide financial services, such as banks, insurance companies, investment firms, and credit-card providers. These companies had the highest dollar trading volume of any Financial 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.