Put-Call Ratio (Open Interest) (30-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.

Berkshire Hathaway Inc. (BRK.B) had 30-Day Put-Call Ratio (Open Interest) of 0.8674 for 2021-09-17.

10-Day 20-Day 30-Day 60-Day
90-Day 120-Day 150-Day 180-Day

Figures for 2021-09-17

Volatility Metrics
Historical Volatility (Close-to-Close)	0.0813
Historical Volatility (Parkinson)	0.0973
Implied Volatility (Calls)	0.1660
Implied Volatility (Puts)	0.1698
Implied Volatility (Mean)	0.1679
Put-Call Implied Volatility Ratio	1.0229
Implied Volatility Skew	0.0659
Option Statistics
Put-Call Ratio (Volume)	0.2875
Put-Call Ratio (Open Interest)	0.8674
Forward Price	284.00
Call Breakeven Price	287.62
Put Breakeven Price	269.36
Option Breakeven Price	279.22

Data from Quantcha