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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, 1:58:40 PM
exp 2026-09-29
exp 2026-10-02
exp 2026-12-25
+41.8 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 |
|---|---|---|---|
| 2026-09-29 | 1d | 89.8% | 0.0 pts |
| 2026-09-30 | 2d | 99.1% | +9.3 pts |
| 2026-10-02 | 4d | 107.3% | +17.5 pts |
| 2026-10-09 | 11d | 112.8% | +23.0 pts |
| 2026-10-30 | 32d | 121.8% | +31.9 pts |
| 2026-12-25 | 88d | 131.6% | +41.8 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).