Implied Volatility Skew (180-Day)

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

iShares MSCI United Kingdom Small-Cap ETF (EWUS) had 180-Day Implied Volatility Skew of 0.0634 for 2026-06-04.

Over 300 data fields encompassing historical volatility, implied volatility, and put-call ratios for multiple time frames
Download data in CSV, Excel, JSON, or XML format
Up to 20 years of data history
52-Week Rank and Percentile for all metrics and time frames

10-Day 20-Day 30-Day 60-Day
90-Day 120-Day 150-Day 180-Day

Figures for 2026-06-04

Volatility Metrics
Historical Volatility (Close-to-Close)	0.2084
Historical Volatility (Parkinson)	0.0941
Implied Volatility (Calls)	0.2278
Implied Volatility (Puts)	0.1979
Implied Volatility (Mean)	0.2128
Put-Call Implied Volatility Ratio	0.8686
Implied Volatility Skew	0.0634
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	--