Glossary/Mark price
Mark price
Mark price is an exchange-computed reference price for a perpetual (or futures) contract, often based on an index and basis dampening. It is used to reduce unnecessary liquidations from momentary last-trade spikes and frequently enters funding calculations.
How AymarData records it
When studying Binance perps or Hyperliquid, join mark-related series with AymarData L2 mids and trades at aligned UTC timestamps. Market pages under /data/binance and /data/hyperliquid document which symbols are in catalog; schema fields evolve via the docs changelog.