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ATM IV proxy — not exchange DVOL unless M · session path · expected-move scaffold · no invented IV · research terminal
ATM IV proxy
Crisis / ExtremeVery high IV — liquidity can gap; size and wings carefully.
As of 9/28/2026, 3:46:04 PM
exp 2026-10-30
exp 2026-12-25
exp 2026-12-25
-0.0 pts back−front
9 history samples
spot × σ × √(1/365)
Rough 1σ move from ATM IV: S · σ · √(t/365). Not a forecast — use for strike framing only.
| Expiry | DTE | ATM IV | vs Index |
|---|---|---|---|
| 2026-10-30 | 32d | 80.9% | 0.0 pts |
| 2026-11-27 | 60d | 81.0% | +0.0 pts |
| 2026-12-25 | 88d | 80.9% | -0.0 pts |
Vol index is a research-terminal proxy from multi-venue ATM IV (not exchange DVOL unless M supplies it). Session stats use the process history ring — not a 1y official series. Options research only (no OMS).