Put-Call Ratio (Open Interest) (180-Day)

Put-Call Ratio (Open Interest): The ratio of outstanding put contracts to outstanding call contracts at the close of the trading day, for options with the relevant expiration date.

iShares MSCI United Kingdom ETF (EWU) had 180-Day Put-Call Ratio (Open Interest) of 0.4162 for 2026-01-16.

For much more extensive volatility insights, check out our new product VolVue:

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 2026-01-16

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1121
Historical Volatility (Parkinson)	0.0657
Implied Volatility (Calls)	0.1314
Implied Volatility (Puts)	0.2163
Implied Volatility (Mean)	0.1738
Put-Call Implied Volatility Ratio	1.6462
Implied Volatility Skew	-0.0330
Option Statistics
Put-Call Ratio (Volume)	0.0873
Put-Call Ratio (Open Interest)	0.4162