Overview
US equities trade across four distinct sessions. Pyth publishes a separate price feed for each:- Pre-market
- Regular trading hours
- After-hours
- Overnight / off-exchange liquidity
- NVDA
- PLTR
How the Aggregation Works
For each supported stock, SEDA:- Subscribes to the four relevant Pyth feeds
- Selects the correct session feed based on live market phase
- Applies lightweight sanity and continuity checks
- Outputs one continuous price to Injective
- No session-to-session gaps
- Continuous charts and oracle flow
- Consistent mark/index pricing for 24/5 trading
- Minimal noise during session transitions
Benefits for Traders & Market Makers
- True 24/5 Equity Trading: Equity perpetuals on Injective can track price action across all four US equity sessions without interruption.
- Cleaner Pricing: No juggling multiple feeds, no abrupt jumps caused by switching sessions, as SEDA standardizes everything into one continuous stream.
- Better Risk Modeling: Margin, liquidations, and mark-price logic use one consistent oracle, improving predictability and reducing false risk triggers.
- Professional-grade extended hours coverage: Thin-liquidity periods like pre-market or after-hours are still reflected accurately via Pyth’s specialized feeds.
Trading Behavior & Considerations
- Volatility varies dramatically by session. Pre-market and after-hours can be more illiquid, so expect wider spreads despite continuous pricing.
- Gaps still occur when news hits between sessions. The unified feed simply ensures the chart reflects the actual first traded price, not a “feed boundary” artifact.
- 24/5, not 24/7. The oracle pauses only on weekends, aligned with the underlying equity market structure.
