Market Data Channels

Reference data streams — prices, rates, volatility surfaces, and instrument listings. For order lifecycle events, see Orderbook.

Channel	Description	Guide
index_price	Underlying asset price updates	Index Price
instruments	Available instruments list updates	Instruments
funding	Funding rate updates (perps)	Funding
interest_rate	Interest rate changes	Interest Rate
iv	Implied volatility (SVI) surface	IV (SVI)

Related channels

Channel	Why
Orderbook	Order lifecycle events (post, cancel, fill). Separated from market data — orderbooks are execution, not reference data.
Account State	Risk metrics that depend on market data inputs (mark prices, Greeks computed from IV + rates).
Position	Position mark prices and Greeks update when market data changes.