I just realized that many newcomers to the market still don't fully understand what Long and Short mean, especially how they operate in practice. Today, I want to share some things I've learned from trading experience.

Simply put, Long is a buy order — you predict the price will go up, buy at a low level, and hope to sell higher later. Short is a sell order — you borrow assets from the exchange to sell at the current high price, then buy back at a lower price to return. Both have profit potential, but also carry significant risks if not managed properly.

What makes Short tricky? It's not the same as Long. When you Long, the maximum loss is only 100% (if the price drops to zero). But Short is different — the loss risk can be unlimited because the price can keep rising. That's why Short Squeeze is a nightmare for many traders. I remember the GameStop event in 2021 — the price skyrocketed, Short investors had to buy back en masse to cut losses, which pushed the price even higher. Billions of dollars were lost in that event.

But what is the strongest point of Long and Short? It's Leverage. You don't need 100% of the capital to trade. With $1,000 and 1:10 leverage, you can open a position worth $10,000. If the price moves in your favor by 10%, you double your account. But if it moves against you, you can lose everything — this is called a Margin Call and Liquidation.

I usually go Long when the market has positive news — such as low inflation, good GDP, or stable interest rates. During those times, buying sentiment is strong, and prices tend to rise. Technical analysis also helps — candlestick patterns like piercing, double bottom, or indicators like MACD, RSI all give good signals.

Conversely, Short is useful when the market is negative. I use Short when inflation is high, central banks tighten monetary policy, or technical indicators like MACD cross below the signal line. In 2022, when the USD strengthened, Short positions on EUR/USD helped many people make good profits.

But here’s an important point — what makes Short different from Long in terms of risk? That’s why I always remind myself about Margin Calls. When losses exceed the maintenance margin, the exchange will warn you to deposit more funds. If you don’t, the system automatically closes the position and your account goes to zero.

There’s a technique I learned from professional CFOs called Hedging — using Long and Short positions to protect your portfolio. For example, you hold 1,000 Apple shares long-term but fear market panic. Instead of selling everything, you can open a Short position on the S&P 500 to hedge the risk. The profit from Short can offset the decline in your underlying holdings.

Regarding pros and cons, Long makes it easier to profit when prices rise, and you can own the asset (collect dividends if it’s stocks). But losses occur when prices fall, especially during volatile markets. Short, on the other hand, profits when prices drop but has unlimited risk if prices suddenly surge.

A common question is: what is Short, and can it be used in all markets? The answer is no. In Vietnam, the stock market doesn’t allow Short selling like in the US or Australia. But Short is applied in all derivatives markets, Forex, and Crypto.

Talking about Crypto, trading Long/Short here differs from traditional stocks. The Crypto market operates 24/7 with extremely large volatility, and leverage can go up to 1:100. The risk of Liquidation happens quickly and more violently.

Finally, I want to remind you — don’t use Long and Short on the same product at the same time. That only costs trading fees without any benefit. Instead, use them in different markets. For example, when USD is strong, you can Short EUR/USD but Long USD/JPY.

The most important thing is to understand the risks clearly, manage your capital well, and always have a stop-loss plan. Trading is not gambling — it’s a skill that requires continuous learning.