State Street SPDR S&P MIDCAP 400 ETF Trust (MDY)

Last Closing Price: 659.87 (2026-10-16)

Put-Call Implied Volatility Ratio (30-Day)

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

State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) had 30-Day Put-Call Implied Volatility Ratio of 1.0802 for 2026-10-16.