Binance Futures Adjusts BITOUSDT Perpetual Contract Size Due to Share Consolidation
Binance Futures is set to adjust the contract size for its USDⓈ-Margined BITOUSDT Perpetual Contract, commencing on November 19, 2026, at 01:00 UTC. This adjustment is a direct consequence of a reverse stock split undertaken by the issuer of the underlying asset, the ProShares Bitcoin ETF (NYSE Arca: BITO).
The adjustment process is anticipated to conclude by 03:30 UTC on the same day, during which a “cancel-only” trading phase may be implemented for up to five minutes following the completion of the primary adjustment.
Underlying Asset and Split Details
The underlying asset for the BITOUSDT perpetual contract is the ProShares Bitcoin ETF. The issuer has announced a 1-for-2 reverse share split. This means that every two pre-split shares will be consolidated into one post-split share, with a corresponding increase in the price per share. The adjustment scale factor will be 0.5.
Impact on Strategy Bots and Open Positions
Effective November 19, 2026, at 00:45 UTC, all strategy bots, including Grid, DCA, and Snowball, associated with the BITOUSDT perpetual contract will be terminated. All associated positions will be automatically closed, irrespective of the “Close all positions on stop” setting. These strategy bot positions will not be reinstated after the adjustment.
During the adjustment period, users with open positions on the BITOUSDT perpetual contract will have their positions closed. Any unrealized profit or loss will be settled and credited to users’ Cross Margin Futures Accounts, regardless of their position mode settings. For users operating in isolated margin mode, their realized profit or loss and all margin balances from their Isolated Margin Futures Accounts will be transferred to their Cross Margin Futures Accounts.
Following the adjustment, new positions can be established. The margin balance transferred by the system to the Isolated Margin Futures Account will be based on the initial margin requirement of the leverage level selected by users prior to the adjustment.
Trading Function Resumption and Price Protection
During the cancel-only phase, users will only be permitted to submit, modify, or cancel Post-Only orders. The duration of this phase will be determined by Binance, contingent on actual market liquidity, and could extend up to five minutes.
At 03:30 UTC on November 19, 2026, trading functions will resume. Binance Futures will implement its Last Price Protected (LPP) Mechanism on the BITOUSDT perpetual contract. Users with open positions are strongly advised to reassess their positions before trading resumes to mitigate potential risks from price fluctuations.
The LPP period for the BITOUSDT perpetual contract is scheduled to conclude at 14:30 UTC on November 19, 2026, once a stable index price can be reliably derived from third-party data vendors. The Mark Price will then transition gradually from the LPP mechanism to the standard Mark Price calculation, employing a smoothing process to minimize abrupt price movements and ensure stability.
The mark price and index price of the BITOUSDT perpetual contract prior to the adjustment will be retained and will continue with the newly adjusted price post-adjustment. The continuous Kline (candlestick) chart reflecting the last price will be corrected within 24 hours after the adjustment is finalized.
Binance notes that the adjustment completion may occur ahead of schedule. API users can utilize the GET /fapi/v1/exchangeInfo endpoint, while UI users can refer to the provided page for the latest trading status of the perpetual contract during the adjustment process.
Trading Status Timeline
- Before November 19, 2026, 01:00 UTC: Contract Size Adjustment – Trading (Continuous Trading Session State)
- November 19, 2026, 01:00 UTC to November 19, 2026, 03:25 UTC: Contract Size Adjustment Process – Trading Halt (Halt Session State)
- November 19, 2026, 03:25 UTC to November 19, 2026, 03:30 UTC: Cancel-Only Phase – Trading Cancel Only (Cancel Only Session State)
- November 19, 2026, 03:30 UTC to November 19, 2026, 14:30 UTC: Trading Resumes with LPP Mechanism – Trading (Continuous Trading Session State)
- After November 19, 2026, 14:30 UTC: Mark Price Transition from LPP to Standard Calculation.
This information is provided in accordance with relevant Exchange and Clearing Rules and Contract Specifications. Binance Futures TradFi Perps are not affiliated with, sponsored, endorsed, or associated by the issuer of the underlying shares or the exchange on which they are listed.
