SPY volatilité State Street SPDR S&P 500 ETF
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.11.7%
HV20How much the stock actually moved, measured from daily closing prices over a past window (annualized). Compare with implied volatility to see what the options market priced versus what happened.8.3%
HV6013.0%
Écart IV − HV20
+3.4pt
Percentile dans l'universWhere this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
2
Percentile sur historique propreWhere today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
4/60 jours enregistrés
Cboe delayed options data · au 21:54 UTC · Comment ces données sont calculées
Structure par terme de l'IV
Volatilité implicite à la monnaie pour chaque échéance cotée, représentée en fonction des jours restants.
| Expire | DTE | ATM IV | 25Δ skewThe IV gap between 25-delta puts and 25-delta calls for one expiration. Positive skew means downside protection is priced richer than upside exposure. | Variation implicite |
|---|---|---|---|---|
| Sep 03, 2026 | 0 | 7.6% | — | ±0.0% |
| Sep 04, 2026 | 1 | 11.6% | +2.0pt | ±0.5% |
| Sep 08, 2026 | 5 | 7.7% | +1.4pt | ±0.7% |
| Sep 09, 2026 | 6 | 8.3% | +1.6pt | ±0.9% |
| Sep 10, 2026 | 7 | 8.9% | +1.7pt | ±1.0% |
| Sep 11, 2026 | 8 | 9.9% | +1.9pt | ±1.2% |
| Sep 14, 2026 | 11 | 9.2% | +1.9pt | ±1.3% |
| Sep 15, 2026 | 12 | 9.4% | +2.1pt | ±1.4% |
| Sep 16, 2026 | 13 | 10.3% | +2.2pt | ±1.6% |
| Sep 17, 2026 | 14 | 10.7% | +2.4pt | ±1.7% |
| Sep 18, 2026 | 15 | 10.9% | +2.6pt | ±1.9% |
| Sep 25, 2026 | 22 | 11.1% | +3.0pt | ±2.2% |
| Sep 30, 2026 | 27 | 11.3% | +3.2pt | ±2.5% |
| Oct 02, 2026 | 29 | 11.6% | +3.3pt | ±2.6% |
| Oct 09, 2026 | 36 | 11.9% | +3.5pt | ±3.0% |
| Oct 16, 2026 | 43 | 12.2% | +3.7pt | ±3.4% |
Smile de volatilité — Sep 18, 2026
Volatilité implicite par strike. L'inclinaison vers les puts (côté gauche plus élevé) est le skew : la protection à la baisse est valorisée plus cher que la hausse.
callsputs
Implicite vs réalisée, historique journalier
IV30HV20