A friend just asked me what those terms in contract trading actually mean, and I realized that many beginners are actually quite fuzzy on these basic concepts. Indeed, people new to the crypto space often get confused by all kinds of professional jargon, especially the concepts of opening positions, closing positions, and holding positions, which are used in almost every trade.

Let's start with the most basic—opening a position is the action of establishing a new position in the market. Want to bet that a certain coin will go up? You buy to open a long position. Want to bet it will go down? Then you sell to open a short position. When opening a position, you need to prepare margin, which is the risk guarantee required by the exchange.

Next is closing a position, a term many people misunderstand. What does closing a position mean? Simply put, it means closing your existing position. If you previously opened a long position by buying, and now want to end this trade, you sell to close. The same applies in reverse. The purpose of closing a position is basically twofold—either to realize the expected profit or to cut losses.

Holding a position is even more straightforward—it's the position you are currently holding. Whether it's long or short, as long as you haven't closed the position, you're in a holding state. Your profit and loss change entirely depending on how the coin's price moves.

Regarding calculations, it's actually not complicated. The cost of opening a position is the opening price multiplied by the trading amount. The profit and loss when closing depends on your position direction—if long, it's the current price minus the opening price times the amount; if short, the reverse. The logic for calculating unrealized profit and loss while holding is the same, just reflecting your current unrealized gains or losses in real time.

Honestly, many people lose money not because they don't understand these concepts, but because they can't control risk. When to open a position and when to close it entirely depends on your risk tolerance and market judgment. My advice is to start with small amounts to familiarize yourself with these operations, and only increase leverage once you truly understand the market temperament.

Recently, while checking market data on Gate, I found their contract trading interface is quite friendly to beginners, with every operation clearly marked. If you're interested, you can try it out yourself—learning these concepts through practical experience is often the most effective way.