Master Crypto Futures: Last Price vs. Mark Price

Crypto Basics Technical Analysis Futures

By: WEEX|Aug 26, 2025

A Beginner's Guide to Crypto Derivatives

Crypto futures rely on specific price reference mechanisms that are essential to how these instruments operate. Here’s what every trader should know:

There are two main types of reference prices you’ll encounter: the Last Price and the Mark Price.

Some trading platforms allow users to choose a reference price to serve as the trigger condition for their Take-Profit and Stop-Loss (TP/SL) orders.

The goal of this mechanism is to help protect traders from significant price differences across platforms, enabling more confident and consistent trading on a single exchange.

Reference prices—especially Mark Price—play a critical role in determining the value of open positions and triggering liquidations. It’s important to understand how they work in order to manage risk effectively.

If you are new to futures contracts, avoid trading them until you fully comprehend their mechanics. A single error while using leverage can lead to the loss of your entire capital.

Last Price vs Mark Price

As highlighted earlier, several reference prices play a pivotal role in the execution and management of futures contracts:

The Last Price refers to the most recent transaction price of the instrument you are trading on that specific platform.

The Mark Price reflects an estimate of the asset’s fair value at a given moment. It is a theoretical value, calculated using methodology that may vary across platforms. Most importantly, it is used to determine margin requirements, trigger liquidations, and evaluate all open positions.

Explanation of Last Price

The Last Price (or Last Traded Price) refers to the most recent transaction price of a trading instrument on the platform where you are executing your trade.

Although it represents the latest market price, the Last Price can vary across different exchanges for the same asset. Since it is theoretically possible for a large trader to manipulate the price on a single platform, the Last Price is not used to determine liquidations. That role is reserved for Mark Price (explained separately).

The Last Price is primarily used to calculate realized profit and loss.

For example, you are trading BTC derivatives on a crypto exchange, and the most recent trade occurred at $100,000. In this case, the Last Price is $100,000. This value reflects the latest trading activity for this specific futures contract on that platform.

If you were trading the same futures product on a different exchange, the Last Price would be based on the most recent trade executed there.

Many crypto traders choose to use the Last Price as the trigger condition for their orders. This approach allows orders and technical analysis to align directly with the price chart of the platform being used.

Additionally, using the Last Price helps ensure that when the market reaches a trader’s desired entry or exit level, the order is executed—regardless of temporary price differences that may exist between exchanges at that moment.

Explanation of Mark Price

The Mark Price is designed to estimate the fair and objective value of a futures contract by aggregating and weighting data from multiple external sources.

The exact formula for calculating the Mark Price varies by platform, but it commonly incorporates elements such as the Index Price (a composite of spot market prices) and the Basis (the difference between futures and spot prices).

As a result, the Mark Price is not a directly traded price—it; it is a theoretical value. Unrealized profit and loss in futures trading are calculated based on the difference between the Mark Price and a trader’s entry price.

For example, suppose you are trading BTC derivatives, and the price of Bitcoin begins to decline rapidly. During this move, you may observe a temporary discrepancy between the Last Price on your platform and the Mark Price. This divergence often occurs during periods of high volatility due to differences in liquidity, trading behavior, and data aggregation across markets.

If the Last Price on your exchange briefly dips below the Mark Price, the effect on your position will depend on which reference price you have selected to trigger orders such as stop-loss or take-profit.

The calculation methodology of the Mark Price makes it more resilient to short-term market manipulation and extreme volatility caused by large orders or illiquid markets.

Because the Mark Price is used to determine liquidations and margin requirements, its multi-source design helps protect traders from artificial price spikes or crashes limited to a single platform.

When to Use the Last Price or Mark Price?

The choice of which price reference to use for triggering orders requires careful consideration and depends on your trading strategy, platform conditions, and risk tolerance.

On most large, liquid centralized exchanges, discrepancies between the Last Price and Mark Price are often small and temporary. However, in certain market environments—such as periods of low liquidity or high volatility—the selection of reference price becomes particularly important. Traders should assess which metric aligns best with their execution and risk management needs.

Using the Last Price may result in executions closer to the visible market price, which is beneficial in liquid markets. For example, a take-profit order set at $100 for Solana (SOL) using the Last Price will typically trigger around that level on your exchange. In contrast, using the Mark Price might lead to slightly different execution values, since it represents a composite fair value estimate rather than the most recent trade. However, the Mark Price can offer meaningful protection on platforms with weaker liquidity or during anomalous price movements, as it relies on aggregated external data rather than a single exchange’s last traded price.

A key risk of using the Last Price for stop-loss orders is the potential mismatch with the Mark Price, which is typically used for liquidation. If the Mark Price reaches your liquidation level before the Last Price triggers your stop, you may be liquidated prematurely—especially if your stop-loss is set very close to your liquidation threshold. Therefore, your decision should account for the liquidity of the contract, the typical magnitude of price deviations, the methodology behind the Mark Price, and the overall stability of the reference prices throughout market cycles.

Conclusion

Understanding the distinct roles of the Last Price and Mark Price is essential for anyone trading crypto futures. Traders should evaluate the liquidity and typical price behavior of the contracts they trade to decide whether the Last Price or Mark Price is more suitable as a trigger for orders. A thorough grasp of these pricing mechanisms can help avoid unexpected liquidations, improve risk management, and protect trading capital.