Price Index

The Mark Price in perpetual Futures contracts is primarily determined by the Price Index. The Price Index represents the weighted average value of the underlying asset, which is listed on major spot exchanges. It serves as a reflection of the fair market value of the futures contract. The Price Index is continuously updated to incorporate any changes in the spot price of the asset or adjustments to the weighting of the exchanges used to calculate the index.

At Ebi, for Perp contracts, the Price Index is derived from multiple sources. These sources include the Chainlink oracle, as well as exchanges such as Binance, KuCoin, Huobi, OKX, HitBTC, Gate.io, Ascendex, MXC, Bitfinex, Coinbase, Bitstamp, Kraken, and Bybit.

Price Index = Sum of (Weight Percent of Exchange A * The Symbol’s Spot Price on Exchange A + Weight Percent of Exchange B * The Symbol’s Spot Price on Exchange B +...+ Weight Percent of Exchange N * The Symbol’s Spot Price on Exchange N)

Where:

Weight Percent of Exchange i = Weight of Exchange i / Total Weight

Total Weight = Sum of (Weight of Exchange A + Weight of Exchange B + ...+ Weight of Exchange N)