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Mark price and oracle price
The price a perp trades at on Hyperliquid, and the outside reference it is held to.
The oracle price is the reference a perp is held to: funding pulls the perp toward it. On the main exchange Hyperliquid provides it; on a builder exchange the exchange's own oracle updater publishes it (each exchange's page names that address).
The mark price is the price this site shows for each market. The gap between the two, in basis points, shows how far the market sits from its reference right now.
On 2026-10-04 the median gap was 2.7 basis points on xyz and 5.6 on the main exchange.
Live
The live perps whose mark sits furthest from the oracle right now, in basis points.