Implied Volatility Skew (20-Day)

Implied Volatility Skew: A measurement that quantifies the difference in implied volatility of options at lower and higher strike prices.

ProShares Online Retail ETF (ONLN) had 20-Day Implied Volatility Skew of 0.0341 for 2026-09-04.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
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Figures for 2026-09-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2341
Historical Volatility (Parkinson)	0.0715
Implied Volatility (Calls)	0.2275
Implied Volatility (Puts)	0.2466
Implied Volatility (Mean)	0.2370
Put-Call Implied Volatility Ratio	1.0842
Implied Volatility Skew	0.0341
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	0.0000