Recently, many people have been asking about the concept of short selling. In fact, this is a very important skill in investing, but most retail investors simply don’t understand it. Let me break it down for everyone.

To put it simply, short selling is a reverse operation. Normally, when we are optimistic about a stock, we buy low and sell high—that’s called going long. But the market can’t always go up; smart investors will operate in the opposite direction when the market declines, which means selling something you don’t own at a high price first, then buying it back at a lower price to return to the broker, earning the difference. This logic sounds counterintuitive, but once mastered, you can make money even in a bear market.

Why learn to short sell? Here’s a real-world example: if the market only allowed going long, the outcome would be very bleak. Stocks would surge wildly when rising, and plummet straight down when falling, making the market very unstable. But if there’s sufficient long and short competition, the market tends to be relatively stable and healthy. From this perspective, short selling is actually a way to hedge risks, prevent bubbles, and increase market liquidity.

There are several main ways to short sell. The first is margin short selling, which involves borrowing stocks from a broker and then selling them, but this method has high thresholds and complex procedures, making it less suitable for retail investors. The second is Contracts for Difference (CFD), which I recommend more because it comes with leverage, low entry barriers, and simple procedures—requiring only 5-10% margin to trade 10-20 times the position. The third is futures, but this carries high risks, high thresholds, and requires professional knowledge; individual investors are generally advised against it. The fourth is buying inverse ETFs, which have controllable risks but tend to be more costly.

Let me give you a practical example. For instance, Tesla stock, which hit a record high of $1,243 in November 2021, then started to pull back. If you judged in January 2022 that it would struggle to break through the previous high, you could short it. Borrow 1 share from the broker and sell it, earning about $1,200 in your account. When the stock price drops to $980, buy it back and return it to the broker, earning roughly $220 in profit from the difference.

Shorting forex works on the same principle. For example, with the GBP/USD currency pair, if you believe the pound will depreciate, you can sell pounds and buy dollars. Using 200x leverage with $590 margin to short one lot, when the exchange rate drops by 21 pips, you can earn $219, a 37% return. But be aware, the forex market is influenced by multiple factors like interest rates, imports and exports, inflation, and policies, requiring professional judgment.

Why do I prefer CFD for short selling? Compared to traditional margin short selling, CFDs have clear advantages. For the same trading size of Google stock, CFD only requires $434 in margin, whereas traditional margin short selling needs $4,343. The return rate for CFD is 34.6%, while margin shorting is only 3.4%. Plus, CFDs don’t charge trading commissions, have no overnight fees, and the trading process is just two steps—sell and buy back—much simpler than margin shorting.

But short selling also carries risks, which must be taken seriously. First is the risk of forced liquidation because the stocks you borrow are owned by the broker, who can demand you close your position at any time. Second is the risk of misjudgment: if the market moves against you, your losses can be unlimited. For example, going long can only lose your initial capital, but shorting stocks can theoretically lead to unlimited losses because stocks can rise infinitely. When margin is insufficient, forced liquidation occurs, which can have serious consequences.

Therefore, here are some precautions for short selling. First, it’s not suitable for long-term operations; the profit potential is limited, and brokers can recall the borrowed securities at any time. Second, don’t over-leverage; short selling is best used to hedge long positions, not as a primary strategy. Third, avoid blindly adding to short positions when facing losses—many people make the mistake of increasing their position, which is a big taboo. Short selling requires flexible entry and exit; profits or losses should be closed promptly.

In summary, short selling is a very useful tool, but it requires genuine market understanding and judgment. Wealthy investors do make big money from short selling, but only if they have an edge in their investment decisions and make choices based on a reasonable risk-reward ratio. If you’re just blindly following trends or lack a clear trading plan, short selling can turn into a tool for losing money.