Binance announced in a press release that it will update collateral ratios under Portfolio Margin for selected assets and revise leverage and margin tiers for multiple USDⓈ-M perpetual contracts on October 7 and October 10, 2025 (UTC).
According to Binance, the update phases begin on October 7, 2025, at 06:00 (UTC) and continue on October 10, 2025. These updates will adjust Portfolio Margin collateral ratios and revise leverage and maintenance-margin tiers across several USDⓈ-M Perpetual pairs. The company states the collateral-ratio changes will finish in approximately 30 minutes, while leverage/margin-tier updates will complete in about one hour. Existing positions will be affected, and running grid strategies may expire; users are advised to monitor their Unified Maintenance Margin Ratio (uniMMR) and adjust positions ahead of the cutovers to mitigate liquidation risk under the new parameters.
Binance lists specific collateral-ratio changes: ZEC rises from 10% to 20% on October 7 at 06:00 (UTC). On October 10 at 06:00 (UTC), XEC changes from 35% to 20%; OSMO from 30% to 20%; and STORJ, TLM, and LQTY each decline from 30% to 15%. The exchange also details revised leverage bands and maintenance margin rates by notional tiers for affected contracts such as DAMUSDT, 1000SATSUSDT, JASMYUSDT, SFPUSDT, BSVUSDT. Several high-leverage brackets are narrowed or shifted to lower notionals.
Under Binance’s Portfolio Margin documentation, uniMMR is described as the core risk metric aggregating adjusted equity and maintenance margin across positions. Changes to collateral ratios directly influence uniMMR and liquidation thresholds. Binance’s materials also note that Portfolio Margin can improve capital efficiency by “over 30%,” which contextualizes why parameter tuning—like raising or lowering asset collateral factors—can materially alter available margin and risk buffers for active derivatives accounts.
Binance is a global cryptocurrency exchange founded in 2017 by Changpeng Zhao and Yi He. It operates a suite that includes spot trading, derivatives, and other web3 services. Widely cited as the largest crypto exchange by trading volume, it serves users worldwide without a declared formal headquarters. Since late 2023, Richard Teng has served as CEO. Binance provides products such as USDⓈ-M and COIN-M futures, options, margin trading, staking, custodial solutions alongside developer and education initiatives.
