Binance to Implement Orderbook EWMA Price Index for Commodity-Based TradFi Perpetual Contracts

According to the announcement from Binance, starting from 2026-05-08 21:00 (UTC), the platform will introduce the Orderbook EWMA price index calculation mode for commodity-based TradFi perpetual contracts. This change aims to replace the Fixed Mode during daily maintenance periods, weekends, and holidays. The new calculation mode will be applied to all existing commodity-based TradFi perpetual contracts, including XAUUSDT, XAGUSDT, XPTUSDT, XPDUSDT, COPPERUSDT, CLUSDT, BZUSDT, NATGASUSDT, as well as any future listings on Binance Futures. The Fixed Mode will continue to be used for equity-based TradFi perpetual contracts during the same periods until further notice. Binance has indicated that a separate announcement will be made if there is a decision to apply the Orderbook EWMA price index calculation mode to equity-based TradFi perpetual contracts. This update is part of Binance's ongoing efforts to enhance user experience by regularly reviewing and updating its product and service offerings. Users are advised to refer to this notice for the most accurate and updated information, as it supersedes any discrepancies that may exist between this notice and any Futures FAQs. The announcement underscores Binance's commitment to providing precise and reliable information to its users.