Binance will adjust the price index calculation method for the Commodity-Style TradFi Perpetual Contract, switching to the Order Book EWMA index starting on May 9th.

BlockBeats News, May 5th. According to the official announcement, starting from May 9, 2026, at 05:00 (UTC+8), Binance will adopt the Order Book EWMA Price Index calculation mode to replace the fixed mode for calculating the price index of commodity-based TradFi perpetual contracts during daily maintenance, holidays, and weekends.

The Order Book EWMA Price Index calculation mode will be applied to all commodity-based TradFi perpetual contracts, including XAUUSDT, XAGUSDT, XPTUSDT, XPDUSDT, COPPERUSDT, CLUSDT, BZUSDT, NATGASUSDT, and any future commodity-based TradFi perpetual contracts to be listed on the platform.

Equity-based TradFi perpetual contracts will continue to use the fixed mode during daily maintenance, holidays, and weekends until further notice. If the Order Book EWMA Price Index calculation mode is to be adopted, a separate announcement will be made.