Binance Copy Trading Rules

Open and close position rules

Open position:

Close position:

• Trading fee rate follows your Binance account VIP level’s fee rate.
• BNB cannot be used for trading fee deduction.

How to calculate the open and close position size?

• Open position: The copy trader's opening order cost is proportional to the lead trader’s order cost. However, the copy trader’s position entry price may not be exactly the same as the lead trader’s. Please note that slippage can affect the copy trader’s position size and the final position might be lower than the lead trader’s.
  • For example, the lead trader’s available margin balance is 1,000 USDT and they opened a position with an order cost of 500 USDT (50% of the available balance). If a copy trader uses 500 USDT to copy the portfolio, the system will use 250 USDT as the open cost to open the position. However, please note that the final order size may be lower than 250 USDT due to slippage.
• Close position: For example, a lead trader has a 1 BTCUSDT position and partially closed 20% of their position (0.2 BTC). One of their copy traders copied the trade with a total investment amount of 0.6 BTC, the system will automatically close 20% (0.12 BTC) for the copy trader.

• Open position: The system will open each trade using the cost per order amount the copy trader set.
  • For example, a copy trader sets the cost per order amount as 20 USDT and the total investment amount is 60 USDT. The system will copy each new trade with 20 USDT as the open cost. After copying 3 orders, their margin balance will become 0 (lower than the cost per order amount). Therefore, the copy trader won’t be able to copy the lead trader’s positions anymore as they don’t have a sufficient margin balance.
• Close position: For example, a lead trader has a 1 BTCUSDT position and partially closed 20% of their position (0.2 BTC). One of their copy traders copied the trade with a total investment amount of 0.6 BTC, the system will automatically close 20% (0.12 BTC) for the copy trader.

• If the open position amount doesn’t meet the minimum trade amount, the system will open the position using the minimum trade amount. For more details, please refer to Trading Rules.
• If the open position amount exceeds the maximum allowable amount for the chosen leverage level, the system will open the position using the maximum allowable amount. For more details, please refer to Leverage and Margin of USDⓈ-M Futures.

Opposite positions/offset

• If both the lead and copy traders opened the same position: When the lead trader creates an order to close the current position and opens an opposite position, the system will only close the copy trader’s position, it won’t open an opposite position.
• If the lead trader opened a long position, but the copy trader didn’t: When the lead trader creates a sell order to open an opposite position, the system will open a short position for the copy trader.

Why did copy trading fail?

• The available margin balance in the copy portfolio is insufficient;
• When the lead trader uses a limit or stop-limit order to open the position, but the order hasn't been fully filled;
• When the market slippage exceeds the limit;
• When the lead trader opens an opposite position (please refer to the description under “Opposite positions/offset”).
• The position notional value is below the symbol’s minimum notional value.

Why is the final position size smaller than the cost per order amount/fixed ratio amount?

• When the IOC limit order was partially filled;
• In the [Fixed Amount] mode: When the available margin balance is below the cost per order amount, the system will use the remaining balance to create the order;
• Due to slippage, some copy traders may not be able to copy an order, the system will therefore check the dynamic maximum size for each symbol. If the number of copy traders exceeds the limit, the system will reallocate the copy trading amount of all copy traders, which may cause the final position size to be smaller than the expected.