NOC volatility Northrop Grumman Corporation
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.26.2%
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.26.4%
HV6028.8%
IV − HV20 spread
-0.3pt
Universe percentileWhere this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
31
Own-history percentileWhere today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
3/60 days recorded
Cboe delayed options data · as of 15:36 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 |
|---|---|---|---|---|
| Sep 18, 2026 | 15 | 23.7% | -1.7pt | ±3.9% |
| Oct 16, 2026 | 43 | 26.9% | -1.9pt | ±7.4% |
| Nov 20, 2026 | 78 | 28.4% | -1.4pt | ±10.6% |
| Dec 18, 2026 | 106 | 27.9% | -0.5pt | ±12.0% |
| Jan 15, 2027 | 134 | 28.1% | -1.4pt | ±13.6% |
| Feb 19, 2027 | 169 | 28.1% | +0.7pt | ±15.3% |
| Mar 19, 2027 | 197 | 28.3% | +0.5pt | ±16.5% |
| Jun 17, 2027 | 287 | 28.7% | +1.0pt | ±20.2% |
| Sep 17, 2027 | 379 | 28.9% | +1.3pt | ±23.2% |
| Jan 21, 2028 | 505 | 30.0% | +1.3pt | ±27.5% |
Volatility smile — Sep 18, 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