Costco Wholesale Corporation (COST)

Last Closing Price: 925.62 (2025-10-16)

Put-Call Implied Volatility Ratio (20-Day)

Put-Call Implied Volatility Ratio: The ratio of implied volatilities of the at-the-money puts to the at-the-money calls.

Costco Wholesale Corporation (COST) had 20-Day Put-Call Implied Volatility Ratio of 1.0005 for 2025-10-16.