To improve market stability, OKX will adjust the components of BTC/USD index between 12:30–13:00 pm UTC on Mar. 11, 2023. Component adjustment details are as follows: Index Before After Exchange Pair Weight Exchange Pair Weight BTC/USD Bitfinex BTC/USD 16.70% Bitfinex BTC/USD 20% Bitstamp BTC/USD 16.70% Bitstamp BTC/USD 20% Coinbase BTC/USD 16.70% Coinbase BTC/USD 20% Kraken BTC/USD 16.70% Kraken BTC/USD 20% Okcoin BTC/USD 16.70% Okcoin BTC/USD 20% Gemini BTC/USD 16.70% Learn more: https://www.okx.com/markets/index-price-list. . Index Price Computation. 1. The latest price and volume of each index constituent is retrieved from selected exchanges in real time. 2. If the relevant exchange is under maintenance, or if any constituent price/volume has no update for a certain time , the constituent data will be temporarily treated as invalid and excluded from index calculation. 3. If the exchange trading pair in the index sample is inconsistent with that of the index, it shall be converted into the corresponding price of the same currency based on BTC/USDT, BTC/USD, USDC/USD, USDT/USD, etc. For example, if a component of the ETH/USD index is ETH/USDT, multiply the component by the price of the USDT/USD index to convert it into the price of the ETH/USD index. 4. Final calculation depends on the number of exchanges with valid data. More details: More than 3 exchanges with valid data: apply equally-weighted price average . Only 2 exchanges with valid data: apply equally-weighted price average. Only 1 exchange with valid data: its last traded price will be used as the index price directly. . Component adjustments can cause an index's mark price to fluctuate, affecting the corresponding instrument's margin and contract trading markets. Users are advised to take necessary measures before an adjustment, such as reducing positions, adding margin, lowering leverage or even closing positions to avoid potential risks introduced by market volatility. . For any inquiries regarding this adjustment, please feel free to contact us in the OKX Telegram group or via the Support Center. . OKX. Mar. 11, 2023 . .