Delayed CBOE data, snapshot 2026-08-18. Spot $107.91.
Put/Call (OI)
1.10
251k P / 229k C
Put/Call (Volume)
1.14
7k P / 6k C today
30d ATM IV
24%
annualized implied move
Call wall
$110
39k contracts
Put wall
$60
44k contracts
Tail hedging
3.0×
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 | 28k | 22k | 0.80 | 5k |
| 2026-08-28 | 3k | 2k | 0.69 | 1k |
| 2026-09-04 | 1k | 857 | 0.66 | 509 |
| 2026-09-11 | 2k | 527 | 0.26 | 246 |
| 2026-09-18 | 28k | 35k | 1.26 | 3k |
| 2026-09-25 | 500 | 220 | 0.44 | 52 |
| 2026-10-02 | 21 | 22 | 1.05 | 11 |
| 2026-10-16 | 11k | 11k | 1.06 | 745 |
| 2026-11-20 | 7k | 5k | 0.71 | 761 |
| 2026-12-18 | 48k | 46k | 0.97 | 1k |
| 2027-01-15 | 69k | 82k | 1.18 | 201 |
| 2027-02-19 | 2k | 3k | 1.93 | 49 |
| 2027-03-19 | 5k | 9k | 1.90 | 32 |
| 2027-06-17 | 3k | 4k | 1.42 | 254 |
| 2028-01-21 | 22k | 29k | 1.33 | 273 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.