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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, 1:58:00 PM
exp 2026-10-02
exp 2026-10-16
exp 2026-11-27
-22.9 pts back−front
2 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 |
|---|---|---|---|
| 2026-10-02 | 4d | 113.3% | 0.0 pts |
| 2026-10-09 | 11d | 108.8% | -4.5 pts |
| 2026-10-16 | 18d | 109.5% | -3.8 pts |
| 2026-10-23 | 25d | 91.5% | -21.8 pts |
| 2026-10-30 | 32d | 107.9% | -5.4 pts |
| 2026-11-27 | 60d | 90.4% | -22.9 pts |
| 2026-12-25 | 88d | 90.5% | -22.7 pts |
| 2027-03-26 | 179d | 89.6% | -23.7 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).