Difference Between Mark Price and Last Price Stop-Loss Trigger on BYDFi (PC)

When trading BYDFi Perpetual Contracts, you can choose between two stop-loss trigger methods: Last Price Trigger and Mark Price Trigger. Knowing their differences is crucial for effective risk management.

🔹 Last Price Trigger (Default)

• Uses the latest traded price as the trigger condition.
• Easier to anticipate the execution price.

⚠️ Risk: Forced liquidation may occur first, since liquidation is triggered by the Mark Price, not the Last Price.

🔹 Mark Price Trigger

• Uses the Mark Price (calculated from index price + funding rates) as the trigger condition.
• Helps reduce unnecessary liquidations.

⚠️ Risk: Since final execution still uses the Last Price, slippage may occur if Mark Price and Last Price differ.

How to Set Trigger Price Method on PC

1. Open the Perpetual Contracts Position page.

2. Click the edit icon in the Stop Loss modifier area.

3. Choose Last Price or Mark Price as your trigger method.

4. Enter your stop-loss price and confirm.

✅ On PC, selecting between Mark Price and Last Price triggers gives you more control over liquidation risk versus execution accuracy.