State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) Volatility Skew
Implied volatility skew shows how IV varies across strike prices for a given expiration. Steeper skews indicate higher demand for downside protection relative to upside speculation.
State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $25.73B, listed on AMEX, carrying a beta of 1.07 to the broader market. The State Street SPDR S&P MIDCAP 400 ETF Trust seeks to provide investment results that, before expenses, correspond generally to the price and yield performance of the S&P MidCap 400 Index (the “Index”) public since 1995-05-04.
Snapshot as of May 15, 2026.
- Spot Price
- $659.83
- ATM IV
- 19.3%
- IV Skew 25Δ
- 0.043
- IV Rank
- 39.9%
- IV Percentile
- 60.7%
- Term Structure Slope
- -0.002
As of May 15, 2026, State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) at-the-money implied volatility is 19.3%. IV rank is 39.9% (where 0% is the 52-week low and 100% is the 52-week high). IV percentile is 60.7%. The 25-delta skew is +0.043: calls carry premium over puts, indicating upside speculation or squeeze risk. High IV rank typically favors premium-selling strategies; low IV rank favors premium-buying.
MDY Strategy Selection at Current Volatility Levels
For State Street SPDR S&P MIDCAP 400 ETF Trust options at 19.3% ATM IV, mid-range IV rank (39.9%) is the regime where directional conviction matters more than vol-regime positioning; strategy choice should follow the event calendar and the dealer-positioning view rather than IV rank alone. The 25-delta skew tilts to calls, so call-credit spreads or covered-call writes harvest more premium than put-credit spreads of the same width. Pair the vol-rank read with the dealer-gamma view and the upcoming-events calendar to confirm the strategy fits both the structural regime and the path-dependent risk. The variance risk premium - the persistent gap between implied and subsequently realized vol - is positive in equity markets on average; high IV rank typically reflects a stretch where the premium is wider than usual.
Learn how volatility skew is reported and how to read the data →
Frequently asked MDY volatility skew questions
- What is the current MDY ATM implied volatility?
- As of May 15, 2026, State Street SPDR S&P MIDCAP 400 ETF Trust (MDY) at-the-money implied volatility is 19.3%. IV rank is 39.9% on a 0-100% scale anchored to the 1-year IV range. ATM IV is the volatility input that makes a Black-Scholes-equivalent model reproduce the listed at-the-money option prices.
- Is MDY IV high or low historically?
- IV is near its 1-year median, a regime where strategy choice depends on directional conviction and event calendar rather than vol regime.
- What does MDY volatility skew tell options traders?
- Volatility skew is the pattern by which IV varies across strikes for a given expiration. State Street SPDR S&P MIDCAP 400 ETF Trust shows upside-skewed pricing: 25-delta calls trade richer than 25-delta puts, often reflecting upside speculation or squeeze risk. Skew matters for risk-defined strategy selection: when downside puts are rich, put-credit spreads capture more premium; when upside calls are rich, call-credit spreads or covered-call writes harvest more.