Important: BITOUSDT Contract Size Adjustment Due to a 1-for-2 Reverse Stock Split
Due to the upcoming 1-for-2 reverse stock split of the ProShares Bitcoin ETF (BITO), Bybit will adjust the contract size of the BITOUSDT Perpetual Contract on Nov 19, 2026, 6AM UTC to maintain fair and consistent trading conditions for all users.
The adjustment period is expected to end by 2:30PM UTC on the same day. Trading may resume as early as 9AM UTC and will resume no later than 2:30PM UTC.
Contract Details
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Trading Pair: BITOUSDT
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Corporate Action: 1-for-2 Reverse Stock Split
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Scale Factor: 0.5
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Impact: Mark Price × 2, Contract Size ÷ 2
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Effective Date: Nov 19, 2026
Impact of the Contract Size Adjustment
The following example illustrates how the contract size adjustment affects your position. Assume a user holds a long position of 20 BITO contracts with an average entry price of 20 USDT and a current mark price of 30 USDT. The user's margin balance before the adjustment is 400 USDT, excluding unrealized P&L.
|
Item |
Before the Adjustment |
After the Adjustment |
|---|---|---|
|
Mark Price (USDT) |
30 |
30 × 2 = 60 |
|
Contract Size (BITO) |
20 |
20 ÷ 2 = 10 |
|
Average Entry Price (USDT) |
20 |
60 |
|
Unrealized P&L (USDT) |
(30 − 20) × 20 = 200 |
0 |
|
Notional Position Value (USDT) |
30 × 20 = 600 |
60 × 10 = 600 |
|
Margin Balance (USDT) |
400 |
400 + 200 = 600 |
|
Total Equity (USDT) |
400 + 200 = 600 |
600 |
Note: This example assumes no other changes to the account. After the adjustment, unrealized P&L is incorporated into the margin balance and reset to 0. The average entry price is reset to the adjusted mark price. The adjustment itself does not change total equity.
Timeline
|
Time |
Description |
Trading Status |
|---|---|---|
|
Before Nov 19, 2026, 6AM UTC |
Before the contract size adjustment |
TRADING (Continuous Trading) |
|
From Nov 19, 2026, 6AM UTC until trading resumes |
Contract size adjustment in progress. Trading may resume at any time between 9AM and 2:30PM UTC. |
TRADING_HALT (Halt Session) |
|
No later than Nov 19, 2026, 2:30PM UTC |
Trading resumes |
TRADING (Continuous Trading) |
Bybit is committed to offering you the best possible trading experience. Please stay alert and be aware of the risks involved throughout this process.
Important Notes
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The contract size adjustment will be applied automatically. No action is required from users.
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During the TRADING_HALT period, from Nov 19, 2026, 6AM UTC until trading resumes, all trading activities, including order placement and cancellation, will be suspended. Trading may resume as early as 9AM UTC and will resume no later than 2:30PM UTC on the same day.
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The BITOUSDT Perpetual Contract will be removed from Trading Bots on Nov 18, 2026, 6AM UTC.
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All unfilled orders for the BITOUSDT Perpetual Contract in Copy Trading will be automatically canceled.
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After the adjustment, the average entry price of existing positions will be reset to the adjusted mark price. Unrealized P&L will be incorporated into the margin balance and reset to 0.
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Funding fee settlements scheduled during the TRADING_HALT period will be skipped. Settlements will resume after trading resumes.
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Auto-Deleveraging (ADL) rankings may change after the contract size adjustment due to recalculated margin ratios.
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API users should update any hardcoded contract size values and check their systems after the adjustment.
For more information on how stock splits and reverse stock splits affect TradFi Perpetual Contracts, please visit our Help Center here.