Perpetual Futures Explained: Why They Have No Expiry Date

In contract trading, perpetual futures are a distinctive and widely used product. Their biggest difference from traditional futures is that they have no fixed settlement date, so traders are never forced to close a position on a specific day. This article starts from the basic definition, explains the mechanics of perpetual futures, the risks introduced by the multiplier mechanism, and the risk control points to watch in both long and short trading.

What Are Perpetual Futures

Perpetual futures are a type of trading with no expiry date. Traditional futures contracts usually specify a delivery date, and position holders must close out or complete delivery before that date; perpetual futures remove this time limit, letting traders decide for themselves when to enter and when to exit. This flexibility means the holding period is determined entirely by the trading strategy rather than constrained by a contract calendar.

What No Expiry Date Means

Having no expiry date first changes how positions are managed. Traders do not need to close positions early to avoid delivery, nor do they need to roll contracts frequently. Positions can be held continuously based on the trader's judgment, and entry and exit timing becomes the only decision variable.

However, flexibility does not mean there is no cost or no risk. Because the contract does not automatically expire and settle, market fluctuations during the holding period will continuously affect margin levels, and traders still need to actively monitor their positions and manage risk.

The Multiplier Mechanism: Amplifying Gains and Losses

Perpetual futures trading usually allows traders to choose a multiplier (perpetual futures leverage). The multiplier increases market exposure, meaning a smaller amount of margin controls a larger notional position. This mechanism amplifies both potential gains and potential losses at the same time, so it should be used with caution.

Understanding how the multiplier affects trading is an important part of risk management. Whatever multiplier is used, traders need to be clear: the larger the exposure, the more pronounced the impact of price fluctuations on account equity.

Long and Short Trading and Key Risk Controls

Perpetual futures support both long and short directions. Longs expect prices to rise, shorts expect prices to fall, and both directions can adjust exposure through the multiplier. The choice of direction does not change the amplifying effect of the multiplier, so whether long or short, risk management follows the same logic:

• Clarify the relationship between the multiplier and exposure, and avoid positions beyond your capacity to bear;
• Continuously monitor margin levels to prevent volatility from forcing a reduction in positions;
• Set entry and exit plans, using the flexibility of no expiry date rather than relying on it;
• Treat the multiplier as a tool rather than a guarantee of returns, and carefully evaluate every amplification.

Summary

The core feature of perpetual futures is that they have no fixed expiry date: traders decide their own entry and exit timing and adjust market exposure through the multiplier. Flexibility creates room to operate, but also raises the bar for risk control. Understanding how the multiplier affects P&L and sticking to risk management are the foundations of using perpetual futures.

On the MSX platform, contract trading has a maker fee of 0.02% and a taker fee of 0.045%, with a 10% discount when paying with $MSX; the platform uses a multi-layered risk control system covering margin monitoring, risk alerts, auto-deleveraging, and forced liquidation, and calculates the mark price by combining an on-chain price oracle with aggregated multi-market data. Specific rules are subject to the official page.