State Street SPDR Nuveen ICE Municipal Bond ETF (TFI) 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 Nuveen ICE Municipal Bond ETF (TFI) operates in the Financial Services sector, specifically the Asset Management - Bonds industry, with a market capitalization near $3.09B, listed on AMEX, carrying a beta of 1.09 to the broader market. The State Street SPDR Nuveen ICE Municipal Bond ETF seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of the ICE 1+ Year AMT-Free Broad Municipal IndexThe Index includes state and local general obligation bonds, revenue bonds, pre refunded bonds, insured bonds, and municipal lease obligationsThe Index is market cap weighted and undergoes monthly rebalancing and reconstitution public since 2007-09-13.
Snapshot as of May 15, 2026.
- Spot Price
- $45.14
- ATM IV
- 10.5%
- IV Skew 25Δ
- 0.055
- IV Rank
- 1.8%
- IV Percentile
- 83.7%
- Term Structure Slope
- -0.042
As of May 15, 2026, State Street SPDR Nuveen ICE Municipal Bond ETF (TFI) at-the-money implied volatility is 10.5%. IV rank is 1.8% (where 0% is the 52-week low and 100% is the 52-week high). IV percentile is 83.7%. The 25-delta skew is +0.055: 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.
TFI Strategy Selection at Current Volatility Levels
For State Street SPDR Nuveen ICE Municipal Bond ETF options at 10.5% ATM IV, low IV rank (1.8%) 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. 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 TFI volatility skew questions
- What is the current TFI ATM implied volatility?
- As of May 15, 2026, State Street SPDR Nuveen ICE Municipal Bond ETF (TFI) at-the-money implied volatility is 10.5%. IV rank is 1.8% 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 TFI 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 TFI volatility skew tell options traders?
- Volatility skew is the pattern by which IV varies across strikes for a given expiration. State Street SPDR Nuveen ICE Municipal Bond 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.