Put-Call Ratio (Volume) (30-Day)

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

State Street SPDR S&P Biotech ETF (XBI) had 30-Day Put-Call Ratio (Volume) of 6.4857 for 2026-09-03.

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 2026-09-03

Volatility Metrics
Historical Volatility (Close-to-Close)	0.3109
Historical Volatility (Parkinson)	0.2230
Implied Volatility (Calls)	0.3141
Implied Volatility (Puts)	0.3309
Implied Volatility (Mean)	0.3225
Put-Call Implied Volatility Ratio	1.0534
Implied Volatility Skew	0.0319
Option Statistics
Put-Call Ratio (Volume)	6.4857
Put-Call Ratio (Open Interest)	1.9532