Vanguard Mid-Cap Index Fund ETF Shares (VO)

Last Closing Price: 307.08 (2026-04-17)

Put-Call Implied Volatility Ratio (120-Day)

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

Vanguard Mid-Cap Index Fund ETF Shares (VO) had 120-Day Put-Call Implied Volatility Ratio of 1.0200 for 2026-04-17.