Formula
The Realised Profit and Loss (Realised PNL) on your Transaction History page represents the overall financial outcome of all your trades during a 24-hour period. It includes gains, losses, fees, and funding payments.
The formula for calculating it is as follows:
Unrealised PNL = Number of lots * Multiplier * (100/Average Entry Price - 100/Exit Price)
* round the (100/Price) values to 8 decimal places for accuracy and double-check your Unrealised PNL calculation using the BitMEX calculator.
Realised PNL = Unrealised PNL - taker fee + maker rebate -/+ funding payment
Steps
To calculate your Realised PNL on BitMEX, you will need to account for all the trades you made within a 24-hour period between 12:00 PM UTC and 12:00 PM UTC the next day. Here's a guide on how to manually calculate your Realised PNL:
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Check the Trade History page to see all the trades you made within the 24-hour period.
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Calculate the Unrealised PNL for each trade using the Unrealised PNL formula above.
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Calculate the Realised PNL for each trade using the Realised PNL formula above.
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Add up the Realised PNL for all the trades you made and the funding payment you received/paid within the 24-hour period to get your total Realised PNL for that day.
Example: manually calculating Realised PNL
1. Check the Trade History page to see all the trades you made within the 24-hour period
Let's say you want to calculate your Realised PNL for January 18th; you'll need to account for all trades made between January 17th, 12:00 PM UTC, and January 18th, 12:00 PM UTC.
After reviewing the Trade History page, you have the following trades that fall within that timeframe:
- Trade 1: Order e78e4a1 was partly closed with order 5403897
- Trade 2: The remainder of e78e4a1 was fully closed with afe5cda within that 24-hour period
2: Calculate the Unrealised PNL for each trade
Trade 1 (e78e4a1 partly closed with 5403897)
- Number of lots = 5
- Multiplier = 1
- Average Entry Price = 42292.5
- Exit Price = 42303
Unrealised PNL = Number of lots * Multiplier * (100/Average Entry Price - 100/Exit Price)
Unrealised PNL = 5 * 1 * (100/42292.5 - 100/42303)
Unrealised PNL = 5 * 1 * (0.00236449 - 0.0023639)
Unrealised PNL = 0.00000295 XBT
Trade 2 (rest of e78e4a1 closed with afe5cda)
- Number of lots = 15
- Multiplier = 1
- Average Entry Price = 42292.5
- Exit Price = 42107.5
Unrealised PNL = Number of lots * Multiplier * (100/Average Entry Price - 100/Exit Price)
Unrealised PNL = 15 * 1 * (100/42292.5 - 100/42107.5)
Unrealised PNL = 15 * 1 * (0.00236449 - 0.00237487)
Unrealised PNL = -0.0001557 XBT
3. Calculate the Realised PNL for each trade
Trade 1 (e78e4a1 partly closed with 5403897)
- Unrealised PNL = 0.00000295 XBT
- Taker fee = 0.00002954 XBT
Realised PNL = Unrealised PNL - Taker fee + Maker rebate
Realised PNL = 0.00000295 - 0.00002954
Realised PNL = -0.00002659 XBT
Trade 2 (rest of e78e4a1 closed with afe5cda)
- Unrealised PNL = -0.0001557 XBT
- Taker fee = 0.0000178 XBT
Realised PNL = Unrealised PNL - Taker fee + Maker rebate
Realised PNL = -0.0001557 - 0.0000178
Realised PNL = -0.0001735 XBT
4. Add up the Realised PNL for all trades and the funding payment
Total Realised PNL = Realised PNL for Each Trade +/- Funding Payment
Total Realised PNL for Jan 18th = Realised PNL for Trade 1 + Realised PNL for Trade 2 + Funding payment
Total Realised PNL = -0.00002659 - 0.0001735 + 0.00012685
Total Realised PNL = -0.00007324 XBT
The total Realised PNL for January 18th is -0.00007324 XBT which is also what's shown on the Transaction History page:
