Recently, I’ve been looking into discussions about perpetual contracts and found that many people still have misconceptions about this product. I want to talk from a trader’s perspective about what perpetual contracts are and why they are so popular.

The core feature of perpetual contracts is that they have no expiration date. This is very important. Traditional futures contracts must be settled on a specific date—for example, gold futures require physical delivery at a set time, which incurs storage costs and rollover costs. Perpetual contracts are completely different; you can hold a position indefinitely as long as you have sufficient margin. This gives traders much more freedom.

How does the price of a perpetual contract stay aligned with the spot price? The key mechanism is the funding rate. Simply put, when the contract price is above the spot price, longs pay shorts, which incentivizes selling the contract and pushes the price down. Conversely, when the contract price is below the spot, shorts pay longs. Through this funding rate mechanism, the contract price and the spot price tend to converge automatically. Funding is usually settled every eight hours, and traders only pay or receive fees when holding positions at settlement.

What are the advantages of perpetual contracts? First, high leverage. You can control large positions with a small amount of capital, which is attractive for traders looking to amplify gains. Second, good liquidity, because without different expiration dates competing, trading is concentrated on a single perpetual contract. Third, flexibility—you can enter and exit positions at any time without worrying about expiration.

But the risks are also clear. High leverage means high risk; a slight market move can lead to liquidation. Also, since these products are not regulated by traditional financial authorities (for example, the CFTC in the US doesn’t regulate crypto perpetual contracts), if the exchange encounters issues, investor protection can be limited. This is a very important point that many people tend to overlook.

Let me give an example. Suppose you are bullish on Bitcoin and buy a perpetual contract at $50, with each contract representing $1 worth of BTC. If BTC rises to $60, you make a profit. If it drops to $40, you lose. The key is that you can close your position at any time or hold it as long as your margin account balance stays above the maintenance margin requirement.

The concept of perpetual contracts actually originated from economist Robert Shiller’s theories in 1992, but it became popular in the crypto market later. After some well-known derivatives exchanges launched this product, almost all mainstream trading platforms now offer perpetual contracts.

Interestingly, perpetual contracts are settled in cash rather than physical delivery, which further reduces trading costs. Additionally, major platforms typically set a fixed interest rate (for example, 0.01% per cycle), combined with market-based premium or discount, to form the final funding rate. This design makes trading more standardized and predictable.

Overall, perpetual contracts are powerful tools—they can be used for hedging or for speculative profit. But the prerequisite is that you fully understand how they work and the risks involved. Before participating in such high-risk financial products, thorough research and risk assessment are essential. Many exchanges now offer perpetual contract products, so if you’re interested, check them out.