State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) 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 Portfolio MSCI Global Stock Market ETF (SPGM) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $1.57B, listed on AMEX, carrying a beta of 1.01 to the broader market. The State Street SPDR Portfolio MSCI Global Stock Market ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the MSCI ACWI IMI Index (the "Index")One of the low cost core SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classesA low cost ETF that seeks to offer broad exposure to developed and emerging global equities across the market cap spectrumCould potentially mitigate country-specific risk public since 2012-03-05.
Snapshot as of May 15, 2026.
- Spot Price
- $84.25
- ATM IV
- 17.9%
- IV Skew 25Δ
- 0.017
- IV Rank
- 28.3%
- IV Percentile
- 57.9%
- Term Structure Slope
- -0.017
As of May 15, 2026, State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) at-the-money implied volatility is 17.9%. IV rank is 28.3% (where 0% is the 52-week low and 100% is the 52-week high). IV percentile is 57.9%. The 25-delta skew is +0.017: skew is roughly flat across the 25-delta wings. High IV rank typically favors premium-selling strategies; low IV rank favors premium-buying.
SPGM Strategy Selection at Current Volatility Levels
For State Street SPDR Portfolio MSCI Global Stock Market ETF options at 17.9% ATM IV, low IV rank (28.3%) favors premium-buying or long-vol structures: long calls or puts, debit spreads, calendar spreads, long straddles. The risk: low-rank regimes can persist for months while time decay eats premium-buyers alive. 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 SPGM volatility skew questions
- What is the current SPGM ATM implied volatility?
- As of May 15, 2026, State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) at-the-money implied volatility is 17.9%. IV rank is 28.3% 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 SPGM IV high or low historically?
- IV is subdued relative to its 1-year history, conditions that typically favor premium-buying strategies (long calls, long puts, debit spreads, calendar spreads).
- What does SPGM volatility skew tell options traders?
- Volatility skew is the pattern by which IV varies across strikes for a given expiration. State Street SPDR Portfolio MSCI Global Stock Market ETF skew is roughly flat across the 25-delta wings. 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.