ES Futures Options Skew

Black-76 implied volatility smile and term structure for E-mini S&P 500 (ES) options-on-futures. Explore how IV changes across strikes and expirations.

ATM IV
15.4%
HV20
17.1%
Price
7,520.00

Volatility Smile

Black-76 implied volatility across strikes for the nearest expiration. Data from the public vol surface endpoint.

IV Term Structure

ATM Black-76 implied volatility across expirations. Contango (rising) is normal; backwardation (inverted) signals a near-term event.

Understanding Futures Options Skew

Options skew measures the difference in implied volatility between out-of-the-money puts and equidistant calls. The 25-delta skew compares the IV of a 25-delta put to a 25-delta call. For options-on-futures, IV is solved with the Black-76 model on the futures price.

Steep skew: The market is pricing in higher demand for downside protection. This is typical of equity index futures such as ES, which inherit the tail-risk skew of the underlying SPX index.

Flat or inverted skew: Can indicate squeeze positioning, bullish sentiment, or heavy call buying driving up upside IV.

Term Structure Regimes

  • Contango (normal): Longer-dated options have higher IV than shorter-dated. Reflects time-value premium and normal uncertainty growth.
  • Backwardation (inverted): Near-term IV exceeds far-term. Signals an imminent catalyst: FOMC, CPI, NFP, or other binary macro event.
  • Flat: Uniform IV across the curve. Can indicate low conviction or a transition between regimes.