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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
Elevated / ExpansionRich options — hedges expensive; mean reversion of IV is a common theme.
As of 9/28/2026, 1:58:37 PM
exp 2026-09-29
exp 2026-10-01
exp 2026-10-16
-3.0 pts back−front
45 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 |
|---|---|---|---|
| 2026-09-29 | 1d | 62.2% | 0.0 pts |
| 2026-09-30 | 2d | 63.0% | +0.8 pts |
| 2026-10-01 | 3d | 64.1% | +1.9 pts |
| 2026-10-02 | 4d | 63.6% | +1.3 pts |
| 2026-10-09 | 11d | 62.3% | +0.0 pts |
| 2026-10-16 | 18d | 59.2% | -3.0 pts |
| 2026-10-23 | 25d | 58.3% | -3.9 pts |
| 2026-10-30 | 32d | 65.0% | +2.7 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).