External Pricing

Price data for the underlying assets is sourced from institutional data providers. While external markets are open, an externally derived fair price is published as the oracle price through periodic updates.

External prices for equities are derived across four sessions, up to 24/5 from Sunday 8:00 PM ET to Friday 8:00 PM ET. Coverage varies by market (all times ET):

Session	Hours (ET)
Pre-Market	04:00 – 09:30
Regular	09:30 – 16:00
Post-Market	16:00 – 20:00
Overnight	20:00 – 04:00

Equity perpetuals trade 24/7 on Hyperliquid. Outside a market's covered sessions — including weekends and market holidays — the external feed is closed and the mark is bounded internally. Per-market feeds, sessions, and parameters are listed in the market specifications.