Put-Call Ratio (Volume) (20-Day)

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

Lyell Immunopharma, Inc. (LYEL) 20-Day Put-Call Ratio (Volume) data is not available for 2026-07-20.

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 2026-07-20

Volatility Metrics
Historical Volatility (Close-to-Close)	0.9522
Historical Volatility (Parkinson)	0.9382
Implied Volatility (Calls)	1.6065
Implied Volatility (Puts)	1.6686
Implied Volatility (Mean)	1.6376
Put-Call Implied Volatility Ratio	1.0386
Implied Volatility Skew	0.2733
Option Statistics
Put-Call Ratio (Volume)	--
Put-Call Ratio (Open Interest)	909.0000