Leverage is a tool that allows traders to open positions larger than the cash they actually put in. It works by borrowing buying power, so a small amount of capital can control a much bigger trade. Leverage magnifies results in both directions — it can increase profits, but it can just as easily increase losses. Because of this, leverage is one of the most misunderstood tools in trading: used carelessly it can wipe out an account quickly, but used with strict risk management it can be a controlled, deliberate choice. Understanding leverage is essential before using it.