State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) IV/HV History
Comparing implied volatility to historical (realized) volatility reveals whether options are priced rich or cheap relative to actual price movement. Persistent gaps can signal trading opportunities.
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%
- HV 20-Day
- 14.9%
- HV 60-Day
- 18.4%
- IV Rank
- 28.3%
- IV Percentile
- 57.9%
As of May 15, 2026, State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) ATM implied volatility is 17.9%. 20-day realized volatility is 14.9%, producing an IV-HV spread of +3.0 vol points. Options are pricing in more volatility than the stock has recently delivered, the volatility risk premium. IV rank is 28.3%.
How SPGM iv/hv history Data Feeds Strategy Selection
Strategy selection on State Street SPDR Portfolio MSCI Global Stock Market ETF options does not derive from any single metric in isolation. The iv/hv history view above sits inside a broader read: ATM IV currently sits at 17.9% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the iv/hv history data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.
Learn how implied vs realized volatility is reported and how to read the data →
Frequently asked SPGM iv/hv history questions
- Is SPGM options pricing rich or cheap right now?
- As of May 15, 2026, State Street SPDR Portfolio MSCI Global Stock Market ETF (SPGM) ATM IV is 17.9% against 20-day realized volatility of 14.9%. IV rank is 28.3%. SPGM options are pricing in more volatility than the stock has recently realized: a positive variance risk premium worth 3.0 vol points.
- What is the SPGM variance risk premium?
- The variance risk premium is the persistent gap between implied and subsequently realized volatility. In equity markets it averages positive because option sellers demand compensation for bearing variance shocks. SPGM is currently priced consistently with this premium, which is one input to whether short-vol or long-vol structures carry their typical edge.
- What does SPGM IV rank mean for strategy selection?
- IV rank normalizes the current ATM IV to its 1-year range: 0% is the low, 100% is the high. SPGM's current rank of 28.3% signals where current pricing sits in its own 1-year history. High-rank regimes typically favor premium-selling structures (credit spreads, condors, covered calls); low-rank regimes typically favor premium-buying or long-volatility structures.