ARM volatility Arm Holdings plc American Depositary Shares
IV30Implied volatility interpolated to a constant 30-day horizon from the expirations around it, so different stocks and dates can be compared fairly.73.9%
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.91.3%
HV6083.6%
IV − HV20 spread
-17.4pt
Universe percentileWhere this IV30 ranks across all securities we cover today (a cross-sectional comparison, not the stock's own history).
90
Own-history percentileWhere today's IV30 sits versus its own daily history — 80 means higher than roughly 80% of recorded observations for that period.
28/60 days recorded
Cboe delayed options data · as of 15:34 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 |
|---|---|---|---|---|
| Oct 23, 2026 | 4 | 70.4% | +3.3pt | ±6.0% |
| Oct 30, 2026 | 11 | 68.2% | +2.8pt | ±9.6% |
| Nov 06, 2026 | 18 | 81.4% | +1.9pt | ±14.5% |
| Nov 13, 2026 | 25 | 76.4% | +2.0pt | ±16.0% |
| Nov 20, 2026 | 32 | 73.1% | +1.7pt | ±17.3% |
| Nov 27, 2026 | 39 | 70.4% | +1.8pt | ±18.3% |
| Dec 18, 2026 | 60 | 65.7% | -0.2pt | ±21.2% |
| Jan 15, 2027 | 88 | 63.2% | -0.4pt | ±24.6% |
| Feb 19, 2027 | 123 | 64.1% | -1.1pt | ±29.4% |
| Mar 19, 2027 | 151 | 63.0% | -2.0pt | ±32.0% |
| Apr 16, 2027 | 179 | 62.4% | -2.5pt | ±34.4% |
| Jun 17, 2027 | 241 | 63.2% | -2.1pt | ±40.2% |
| Sep 17, 2027 | 333 | 62.7% | -1.6pt | ±46.6% |
| Dec 17, 2027 | 424 | 63.5% | -2.1pt | ±52.8% |
| Jan 21, 2028 | 459 | 62.8% | -1.9pt | ±54.3% |
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