Binance will adjust the size of the BITOUSDT perpetual contract on November 19, as the BITO ETF implements a 1-for-2 reverse stock split.

According to official announcements, due to the 1-for-2 reverse stock split of ProShares Bitcoin ETF (BITO), Binance Futures will adjust the notional value of its USDⓈ-M BITOUSDT perpetual contract starting at 09:00 Beijing Time on November 19, with an adjustment factor of 0.5, and the adjustment is expected to be completed by 11:30. This reverse stock split means every 2 pre-split shares are consolidated into 1 post-split share, with the share price rising proportionally. During the adjustment period, BITOUSDT perpetual contract trading will be suspended. All unfilled orders (including take-profit and stop-loss orders) will be canceled, existing positions will be closed out in advance, and unrealized profits and losses will be settled to users’ cross-margin contract accounts. Relevant grid, DCA (Dollar-Cost Averaging) and Snowball strategy bots will be terminated at 08:45 Beijing Time; their positions will be automatically closed out and will not be restored after the adjustment is finalized. Trading is expected to resume at 11:30 Beijing Time, followed by a maximum 5-minute order-only cancellation phase, during which only Post-Only orders can be submitted, modified or canceled. After trading resumes, Binance will temporarily activate the Last Price Protection (LPP) mechanism, which is scheduled to end at 22:30 Beijing Time the same day, before gradually transitioning to standard mark price calculations.