I just received quite a few questions about what long and short are, so today I decided to write it up so that new beginners can understand these two core concepts more clearly.

It’s simple: Long is when you expect the price to rise. You buy with the expectation of selling at a higher level. Short is the opposite—you expect the price to fall—so you borrow assets from the exchange to sell at the current high price, and then buy back at a lower price to return them. That difference is your profit.

What’s interesting about long and short—and why are they so popular? Leverage. You don’t need to have 100% of the capital to trade. For example, you have 1,000 USD, and with 1:10 leverage, you can open a position worth 10,000 USD. If the price moves in your favor by 10%, you make 1,000 USD profit—meaning you double your account. But if the price moves against you by 10%, you lose all of your initial money. That’s the danger many people overlook.

When using a long position, you analyze positive signals: good economic news, low inflation, high GDP, and rising employment rates. For stocks, when the market has positive momentum, that’s a good time to open a long. Technically, you can use models such as piercing candles, tweezer bottoms, double bottom, or indicators like MACD, RSI, and Ichimoku to confirm bullish signals.

A short position is the opposite—you wait for negative signals. Inflation rises, central banks tighten monetary policy, and a sell-off mentality overwhelms the market. For forex, when the USD strengthens (like in the second half of 2022), shorting EUR/USD helped many traders earn significant profits. Technically, you look at double top patterns, price channels, or MACD crossing down, Bollinger Band, MA.

But here is the part I want to remind you of: what are the two biggest risks when using long and short?

First is the Margin Call. When losses exceed the maintenance margin, the exchange will issue a warning. If you don’t add more funds, the system automatically closes your position (Liquidation), and your account becomes 0. The only way to avoid it is to manage risk well—set a reasonable stop loss.

Second, and I want to warn more strongly for short positions: Short Squeeze. Long has a maximum loss of 100% (when the price goes to 0), but short can have unlimited losses because the price can rise without limit. Short Squeeze happens when the price suddenly surges, forcing short sellers to rapidly buy back to cut losses. This buying pressure pushes the price even higher. The GameStop incident in 2021 is a typical example—hedge funds lost billions of USD.

There’s one way to use long and short that fewer people know about: Hedging (risk hedging). You hold 1,000 Apple shares long-term and believe the company will do well over the next 5 years. But in the short term, the market panics due to bad macro news. Instead of selling everything off, you open a short position on the S&P 500 or even on Apple itself. The profit from the short can offset the decline in your underlying portfolio, protecting your assets through difficult times.

Quick comparison: The advantage of long is that you profit when the price rises—you can own the product and receive dividends (if it’s a stock). But you will lose when the price falls. Short is the opposite—you profit when the price declines, especially when the market is trending down for the long term. However, the risk of unlimited losses is real, and you also have to pay an overnight fee.

One important point: you should not use long and short at the same time on the same product. Doing so means you’ll lose the trading costs without making any profit. But you can absolutely use long on one market and short on another—for example, go long USD/JPY but short EUR/USD when the USD strengthens.

In crypto, what long and short are is the same as in stocks, but the difference is that the crypto market operates 24/7 with extremely large price fluctuations, and leverage can go up to 1:100. So liquidation risk happens much faster and much more violently.

Finally, remember: long and short are tools, not a way to get rich quickly. You need to analyze carefully, manage risk well, and never bet everything on a single trade. The market will always have surprises, no matter how thoroughly you analyze.