Binance will adjust the BITOUSDT perpetual contract amount on November 19.

Binance will adjust its BITOUSDT USD-margined perpetual contract on November 19 at 09:00 Beijing time, using a 0.5 adjustment coefficient tied to the reverse split of the underlying ProShares Bitcoin ETF (BITO), with completion expected by 11:30. Trading, closing, order placement and liquidation will be suspended during the adjustment, existing orders will be canceled, and positions will be closed and rebuilt afterward, followed by a cancel-only phase of up to five minutes. Strategy bots on the contract will be terminated and auto-closed at 08:45 Beijing time and will not be restored after the adjustment. The change matters because the reverse split alters the contract's reference value, requiring Binance to resize positions and orders to keep pricing consistent with the ETF. Traders should watch for the temporary halt in BITOUSDT liquidity and confirm their positions and bots are reset once the adjustment finishes.