Recently, I was talking with a friend about leveraged trading and found that many people still don't quite understand the concept of margin calls. Actually, this idea may seem complicated at first, but once you understand it, you can avoid a lot of losses.

In simple terms, a margin call occurs when you are trading with leverage, and your position loses too much value, causing your margin to be insufficient to maintain the position. The broker will then warn you to either close the position or add more funds. Basically, it means your losses have exceeded your initial investment.

The key is the margin level indicator. It is actually your account equity divided by the used margin, multiplied by 100%. For example, suppose I have a $1,000 account and open a position requiring $200 margin; my margin level would be 500%. But if this position loses $800, my equity drops to $200, and the margin level falls to 100%. At this point, you're in a dangerous zone—you can't open new positions, and if losses continue, the broker may forcibly close your position.

How can you avoid margin calls? My experience is that first, you need to recognize your risk tolerance and not use leverage beyond what you can handle. Second, always set a stop-loss; this is the most important. By setting a stop-loss point, when the price drops to that level, it automatically closes the position, helping to keep losses within an acceptable range. Also, don't put all your funds into a single trade; diversifying investments can effectively reduce the impact of a single loss.

In simple terms, margin calls often result from poor risk management. By doing these three things—recognizing your risk capacity, using stop-loss orders, and diversifying investments—you can greatly reduce the risk of a margin call.