Stock split changes not only price quotes on the stock market. For TradFi Perpetual Binance, it provides for a technical adjustment of the contract size and Mark Price by the split coefficient or reverse split.

During such an adjustment, the open position is first closed by the system, the unrealized PnL is credited to the Cross Margin Futures Account, and after the process is completed the position is restored with a new number of contracts and an adjusted price. For an isolated position, the funds are also temporarily returned to the cross account, and then the system calculates margin for the restored position using the chosen leverage before the event.

Important operational detail: open orders are canceled before any adjustments. An old stop, take profit, or limit order should not be considered valid just because the position appears again in the interface. Due to rounding to tick size and step size, slight differences in price and quantity are possible.

Before the date of a corporate event, check Binance announcements, record the position size and margin buffer, and after trading resumes, review the position, leverage, and all protective orders separately. A change in the number of contracts after a split is not, by itself, a profit or loss; it’s the entire adjusted position that matters.

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