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Reg T sets Stock Margin at 50%

This lesson assumes that you understand your financial goals and are familiar with all the risks and opportunities online trading provides. You can schedule a free call with our expert trader that will help you find the best way to achieve your financial goals.

RegT Margin trading and investing

To protect investors and brokers from losses caused by excessive leverage, regulators and exchanges set minimum margin requirements. For U.S. equities, margin rules called Regulation T (RegT) set the minimum initial margin at 50% -- that’s the percent of the initial purchase (or short sale) that investor