Bybit will adjust its open interest calculation method on June 11.

According to Foresight News , Bybit announced that starting June 11th, its Open Interest (IO) calculation method will change from bilateral to unilateral counting, and reminded API users to update their API fields accordingly. This move aims to improve market transparency, as the new calculation method is more consistent with other crypto derivatives platforms, further facilitating cross-platform data comparison for users and analysts. After adopting the new calculation method, the displayed open interest value will decrease, but the actual market activity will remain unchanged. This change only reflects the shift in calculation methodology; each user's actual position size, margin, profit/loss, and position limits will remain unchanged. Simultaneously, the system will automatically adjust fees to maintain existing position limit levels. Starting June 11th, the updated open interest data will be displayed on Bybit's market data page, trading page, and app. API users must update their systems before the effective date. Example: When there are both 1,000 BTC long positions and 1,000 BTC short positions in a BTCUSDT contract, the open interest will be adjusted from 2,000 BTC to 1,000 BTC.