What is the current SPTM ATM implied volatility?

As of May 15, 2026, State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) at-the-money implied volatility is 15.2%. IV rank is 32.9% 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 SPTM 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 SPTM volatility skew tell options traders?

Volatility skew is the pattern by which IV varies across strikes for a given expiration. State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 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.

State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) 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 S&P 1500 Composite Stock Market ETF (SPTM) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $13.09B, listed on AMEX, carrying a beta of 1.01 to the broader market. The State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of the S&P Composite 1500 Index (the "Index")A low-cost ETF that seeks to offer precise, comprehensive exposure to the US equity market encompassing stocks across all market capitalizationsThe Index represents approximately 90% of the investable US equity marketOne of the low-cost core State Street SPDR Portfolio ETFs, a suite of portfolio building blocks designed to provide broad, diversified exposure to core asset classes public since 2000-10-10.

Snapshot as of May 15, 2026.

Spot Price: $89.57
ATM IV: 15.2%
IV Skew 25Δ: 0.043
IV Rank: 32.9%
IV Percentile: 66.7%
Term Structure Slope: 0.005

As of May 15, 2026, State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) at-the-money implied volatility is 15.2%. IV rank is 32.9% (where 0% is the 52-week low and 100% is the 52-week high). IV percentile is 66.7%. 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.

SPTM Strategy Selection at Current Volatility Levels

For State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF options at 15.2% ATM IV, mid-range IV rank (32.9%) 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 SPTM volatility skew questions

What is the current SPTM ATM implied volatility?: As of May 15, 2026, State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF (SPTM) at-the-money implied volatility is 15.2%. IV rank is 32.9% 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 SPTM 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 SPTM volatility skew tell options traders?: Volatility skew is the pattern by which IV varies across strikes for a given expiration. State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF 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.