Delayed CBOE data, snapshot 2026-08-18. Spot $1,101.9.
Put/Call (OI)
2.77
20k P / 7k C
Put/Call (Volume)
2.78
903 P / 325 C today
30d ATM IV
26%
annualized implied move
Call wall
$1,150
385 contracts
Put wall
$1,000
8k contracts
Tail hedging
7.7×
deep-OTM puts vs calls
All expiries combined. Amber lines mark the call and put walls; the dashed line is spot.
At-the-money implied volatility per expiry.
IV by strike — expiry 2026-09-18. A steep left side = expensive downside protection.
Daily ATM IV (~30 DTE bucket) collected since March 2026. Rising IV into an event = the market bracing; collapsing IV after = the crush.
| Expiry | Call OI | Put OI | P/C | Volume today |
|---|---|---|---|---|
| 2026-08-21 | 2k | 6k | 3.00 | 158 |
| 2026-09-18 | 3k | 5k | 1.85 | 204 |
| 2026-10-16 | 114 | 265 | 2.32 | 30 |
| 2026-11-20 | 272 | 5k | 19.55 | 659 |
| 2026-12-18 | 862 | 2k | 2.30 | 75 |
| 2027-03-19 | 462 | 193 | 0.42 | 43 |
| 2027-06-17 | 428 | 329 | 0.77 | 59 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.