Financial stocks are shares of companies operating within the financial sector—such as banks, insurance firms, investment management companies, brokerage houses and real estate financing firms. Because they are sensitive to regulatory changes and monetary policy shifts, financial stocks can exhibit higher volatility relative to broader market indices. These companies had the highest dollar trading volume of any Financial stocks within the last several days. Get alerts:Robinhood Markets (HOOD)Robinhood Markets, Inc. operates financial services platform in the United States. It focuses on investment banking, financial services for consumers and small businesses, commercial banking, financial transaction processing, and asset management.