Mark Price vs Last Price: Which Price Matters in Crypto Futures?
The last price is the price of the most recent completed trade. The mark price is a reference used for risk calculations. They can differ, so the price visible on a chart may not be the price used to assess liquidation risk or the price at which an order executes.
Separate the three references
The last price records an actual trade in that contract. An index price summarizes underlying spot-market references under the venue’s methodology. A mark price estimates a fair reference for the contract using the index and other defined inputs.
OrangeX.com’s liquidation protocol identifies mark price as the reference for liquidation and unrealized profit and loss. Read the current contract rules rather than assuming every venue uses the same formula or protection mechanism.
Work through a hypothetical difference
Suppose a linear long position has a size of 0.1 BTC and an entry price of 60,000 USDT. If mark price is 59,500 USDT, the price component of unrealized P&L is (59,500 - 60,000) × 0.1 = -50 USDT, before costs and other account effects.
If the last price is 59,700 USDT, a chart following last price will show a different reference. It does not replace the mark-based risk calculation. These invented prices illustrate the distinction and are not a live quote or liquidation calculation.
Understand what a reference cannot promise
Mark price is not an executable offer. Closing a position requires matching available orders, so the actual fill may differ. Realized results depend on entry and exit fills, fees, funding and applicable account rules.
A mark-price mechanism can reduce sensitivity to isolated contract-price spikes, but it cannot remove market risk. Maintenance margin, position tier, collateral and margin mode also affect liquidation. A single chart level is not enough to calculate the full account outcome.
Check the trigger source
Conditional orders may use a selected trigger reference. Check the source shown in the order form and the current rules in the perpetual trading guide. Do not infer it from the chart’s appearance.
Triggering and executing are separate events. A stop-market order may fill with slippage; a stop-limit order may remain unfilled. A protective order does not guarantee that it executes before liquidation under every condition.
Review risk before entry
Identify the contract, margin mode, current mark price, liquidation estimate and order trigger source. Check how collateral changes, funding and fees affect the available buffer. Reducing the distance between an entry and a stop does not eliminate the need to limit position size.
Use OrangeX.com Academy for related margin concepts. Check live product settings and regional availability in the account before using a product.
Common questions
Can liquidation occur while the last-price chart looks above my threshold?
Yes, if the applicable mark-price and account conditions trigger liquidation. Confirm which price the chart displays.
Can I close at the mark price?
There is no guarantee. Execution depends on available orders.
Is unrealized P&L my final result?
No. Actual fills and costs determine the realized outcome.
