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How to Add to a Position in Mixin Perpetual Contracts

Mixin Perpetual Contracts now support position adding.

You can increase the size of an existing position without opening a new one.


What Is Adding to a Position?


Adding to a position means increasing the size of an existing position.


For example:


If you already hold a BTC long position and continue buying BTC in the same direction, this is considered adding to a position.


After adding to a position:


  • Position size will increase;
  • Average entry price may change;
  • Margin usage will increase;
  • PnL will be recalculated based on the updated position.


Adding to a position does not create a separate position. It will be merged into your current position in the same direction.


How Is the Average Entry Price Calculated?


After adding to a position, the system will automatically recalculate the average entry price based on both the original and newly added positions.


For example:


  • Original position: 1 BTC long at 100,000 USDT;
  • Added position: 1 BTC at 110,000 USDT.


After adding:


  • Total position: 2 BTC;
  • New average entry price: 105,000 USDT.


The system calculates the average price automatically.


Why Add to a Position?


Users may add to a position in the following situations:


  • To increase exposure when confident in the current trend;
  • To build positions gradually instead of entering all at once;
  • To adjust the overall position cost;
  • To increase position size while already in profit.


Please note: Adding to a position increases both potential profits and risks.


How to Add to a Position


  1. Go to Wallet - Trade - Perpetual page;
  2. Select the position you want to increase;
  3. Tap Add;
  4. Enter the additional margin amount;
  5. Confirm to complete the position increase.


What Changes After Adding to a Position?


After adding to a position:


  • Position size increases;
  • Average entry price may change;
  • Margin usage increases;
  • Liquidation price may change;
  • Unrealized PnL will be recalculated.


Actual changes depend on:


  • Add position price;
  • Leverage used;
  • Position direction;
  • Current market price.


Important Notes


  • Adding to a position may increase overall position risk;
  • Under high leverage, adding to a position may increase liquidation risk;
  • During volatile market conditions, actual execution prices may vary;
  • Please manage leverage and position size carefully according to your own risk tolerance.
Perpetual contract trading involves high risk and may result in losses or liquidation.

Updated on: 28/05/2026