General Finance

Margin

Margin is borrowed money used to invest, allowing for greater potential returns but also higher risk.

Also known as: leverage, margin trading

What You Need to Know

Margin refers to the practice of borrowing funds from a brokerage to trade financial assets, amplifying both potential gains and risks. For example, if you invest $10,000 with a 50% margin requirement, you can buy up to $20,000 worth of securities. If those investments appreciate by 10%, you could earn $2,000, but if they decline by the same percentage, you lose $2,000, potentially leaving you with a negative balance after accounting for interest costs.

A common misconception is that margin trading is just about leveraging your investments; it also involves understanding the risk of margin calls. If the value of your investments falls below a certain threshold, your broker may require you to deposit more funds or sell some assets to maintain the margin requirement. For instance, if your $20,000 investment falls to $15,000, you could face a margin call if your broker requires a minimum equity of 25%.

To avoid mistakes, investors should assess their risk tolerance and have a clear exit strategy. Using margin can lead to substantial losses, particularly in volatile markets. A good rule of thumb is to limit margin use to a small percentage of your total investment portfolio—generally no more than 30% to 50%—to mitigate risk.

In summary, while margin can enhance your investment returns, it carries significant risks. Always conduct thorough research, understand your broker's margin rules, and be prepared for market fluctuations to protect your investment.