CMI volatility Cummins Inc.
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.40.4%
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.21.8%
HV6027.4%
IV − HV20 spread
+18.6pt
Universe percentileWhere this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
53
Own-history percentileWhere today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
29/60 days recorded
Cboe delayed options data · as of 21:53 UTC · How these are computed
IV term structure
At-the-money implied volatility for each listed expiration, plotted by days remaining.
| Expires | 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. | Implied move |
|---|---|---|---|---|
| Nov 20, 2026 | 32 | 40.4% | +1.8pt | ±9.7% |
| Dec 18, 2026 | 60 | 36.4% | +2.4pt | ±11.8% |
| Mar 19, 2027 | 151 | 35.1% | +3.2pt | ±17.9% |
| Jun 17, 2027 | 241 | 35.2% | +2.9pt | ±22.5% |
| Sep 17, 2027 | 333 | 35.6% | +3.2pt | ±26.5% |
Volatility smile — Nov 20, 2026
Implied volatility by strike. The tilt toward puts (left side higher) is the skew: downside protection priced richer than upside.
callsputs
Implied vs realized, daily record
IV30HV20