I just received questions from a few of you about what a margin call is and why it’s so important. In fact, this is one of the concepts that any trader using leverage must understand clearly, because it directly relates to whether your account gets liquidated or not.

Simply put, what exactly is a margin call? It’s a warning or a requirement from the exchange when the margin account value of yours drops below the maintenance margin level they set. When a margin call occurs, it means you need to add funds or close part of your position to avoid automatic liquidation.

I see many new traders not fully understanding this mechanism, so they often find themselves in difficult situations. Margin is a loan that the exchange provides so you can trade with a larger amount than your actual capital. But in return, the exchange will require you to maintain a certain amount of equity. When your trading position incurs losses to a certain extent, the ratio of your equity to the position’s value decreases, and that’s when a margin call happens.

From a risk management perspective, what is a margin call also serves to protect traders. It helps prevent you from losing all your capital if the market moves against your prediction. However, the exchange also uses it to protect themselves from bad debts when traders are unable to repay.

Let me give a specific example for better understanding. Suppose you buy 10 lots of Apple stock with 1:10 leverage (meaning a 10% margin), at a price of $145 per share. You need to put up $1,450 and borrow $13,050 from the exchange. If the maintenance margin ratio is 25%, then a margin call will occur when Apple’s price drops to $137.3. At this price, your equity is only about 25% of the position’s value, and the exchange will require you to handle the situation.

There are three main ways to handle a margin call. First, deposit more money into your account to increase your equity. This method is good if you still believe in your position, but the risk is that if the price continues to fall, you will lose more money. Second, close the position entirely to avoid automatic liquidation at a deeper loss. This is a safe choice if you’re unsure about the market direction. Third, reduce your position size, meaning sell part of it to lower risk but still keep the chance if the market reverses.

I want to warn you of an important thing: never use margin to average down when the price moves against you. This is the most common mistake I see among new traders. It only makes you sink deeper into losses.

To avoid margin calls, I have a few tips. First, always set a stop loss order immediately when opening a position. This is the most effective risk management tool. Second, trade with low margin, especially if you don’t have much experience. Lower margin means a higher margin call ratio, giving you more time to handle the situation. Third, keep enough equity to withstand strong price fluctuations. Fourth, limit opening too many positions at once; only open 1-2 positions at a time so you can monitor their performance effectively.

In summary, what is a margin call isn’t something to fear if you know how to manage it. It’s part of margin trading that you need to accept and plan for in advance. Make sure you have enough knowledge and discipline before using leverage. If you want to trade more safely without worrying about margin calls, you can choose a 1:1 ratio or trade without leverage. The key is to understand your own risks clearly.