Put-Call Ratio (Volume) (180-Day)

Put-Call Ratio (Volume): The ratio of puts traded to calls traded, for options with the relevant expiration date.

Vanguard 500 Index Fund ETF Shares (VOO) had 180-Day Put-Call Ratio (Volume) of 65.9936 for 2026-03-13.

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 2026-03-13

Volatility Metrics
Historical Volatility (Close-to-Close)	0.1188
Historical Volatility (Parkinson)	0.1087
Implied Volatility (Calls)	0.2165
Implied Volatility (Puts)	0.2141
Implied Volatility (Mean)	0.2153
Put-Call Implied Volatility Ratio	0.9891
Implied Volatility Skew	0.0840
Option Statistics
Put-Call Ratio (Volume)	65.9936
Put-Call Ratio (Open Interest)	1.1468