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US Equity Historical & Option Implied Volatilities API
Includes 60+ volatility indicators updated daily by 6:30PM Eastern on trading days with historical data back to 2002. Covers 3000+ US equities with close-to-close historical volatility, Parkinson historical volatility, option-implied volatility and skew steepness.
Quantcha Option Analytics API
Includes 70+ option-derived indicators updated daily by 6:30PM Eastern on trading days with historical data back to 2002. Covers 4000+ US equities with put/call ratios, option-implied forward prices, and option breakevens.