Put-Call Ratio (Open Interest) (20-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.

State Street Communication Services Select Sector SPDR ETF (XLC) had 20-Day Put-Call Ratio (Open Interest) of 1.6575 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

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0733
Historical Volatility (Parkinson)	0.0905
Implied Volatility (Calls)	0.1452
Implied Volatility (Puts)	0.1725
Implied Volatility (Mean)	0.1588
Put-Call Implied Volatility Ratio	1.1884
Implied Volatility Skew	0.0883
Option Statistics
Put-Call Ratio (Volume)	10.6667
Put-Call Ratio (Open Interest)	1.6575