Cboe Volatility Index (VIX · index)
Overview · Option chain · Volatility · Expected-move history
Cboe delayed options data · as of 15:05 UTC · Figures derived from the full chain (1,520 contracts, 13 expirations) · IV own-history percentile appears after 60 recorded days (29 so far)
Expected move · Nov 18, 2026 (29 days)
Methodology →Read from option prices: the at-the-money straddle costs this much, so the market is pricing a move of about that size in either direction by this date. It is an estimate of movement, not a prediction of direction.
Options are pricing a move of about ±17.9% (range 14.48–20.80) by Nov 18, 2026. ATM straddle: 3.16 @ strike 17.5 · ATM IV: 76.7%.
Probability distribution
Model & assumptions →The curve shows where a lognormal model, fed with current implied volatility, puts the range of outcomes at this expiration. Shaded: the expected-move band.
| Level | vs price | P(above)Model-estimated chance the stock finishes above a level at expiration, derived from current IV under a lognormal model with stated assumptions — an estimate, not a prediction. | P(below) |
|---|---|---|---|
| 15.88 | -10% | 64.7% | 35.3% |
| 16.76 | -5% | 55.1% | 44.9% |
| 17.64 | +0% | 45.7% | 54.3% |
| 18.52 | +5% | 36.9% | 63.1% |
| 19.40 | +10% | 29.2% | 70.8% |
Model-estimated probabilities of finishing above/below each level at expiration: estimates under stated assumptions, not predictions.
Probability explorer
Drag the slider to any level and see the model-estimated chance the stock finishes above or below it at the selected expiration.
Horizon: Nov 18, 2026 · lognormal model with zero drift: an estimate, not a prediction. Assumptions
Expirations
Open the chain →| Expires | DTEDays to expiration, in calendar days. | Implied move | ATM IV | Open int. |
|---|---|---|---|---|
| Oct 21, 2026 | 1 | ±3.8% | 95.9% | 5.66M |
| Oct 28, 2026 | 8 | ±13.1% | 109.3% | 94.4K |
| Nov 04, 2026 | 15 | ±16.0% | 97.5% | 35.1K |
| Nov 11, 2026 | 22 | ±17.7% | 89.5% | 10.5K |
| Nov 18, 2026 | 29 | ±17.9% | 76.7% | 5.79M |
| Nov 24, 2026 | 35 | ±20.8% | 81.8% | 1,814 |
| Dec 16, 2026 | 57 | ±23.8% | 73.3% | 2.48M |
| Jan 20, 2027 | 92 | ±27.2% | 63.1% | 1.15M |
| Feb 17, 2027 | 120 | ±29.0% | 57.7% | 392.5K |
| Mar 17, 2027 | 148 | ±31.0% | 55.4% | 334.8K |
| Apr 21, 2027 | 183 | ±31.9% | 50.3% | 69.3K |
Open interest by strike · Nov 18
Where option positions are concentrated. Teal bars are calls, red bars are puts; the dashed line is the current price.
Largest open-interest concentrations (all expirations ≤ 60 days): 20 C · 751.9K25 C · 573.8K16 P · 551.3K22 C · 529.0K17 P · 485.8K
IV term structure
Volatility page →At-the-money implied volatility for each expiration. A hump around a date often marks a scheduled event the market is pricing.
When does open interest expire?
Implied vs realized volatility
HV from our stored daily closes (annualized); IV30 interpolated from the chain. Method
Price, last 60 sessions
Daily closes; Financial Modeling Prep.
Track record
Full history →Of 94 recorded snapshot-versus-outcome comparisons so far, the close landed inside the expected range 74.5% of the time.