Vanguard Mid-Cap Index Fund ETF Shares (VO)

Last Closing Price: 79.55 (2026-06-03)

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 0.9616 for 2026-06-03.