Delayed CBOE data, snapshot 2026-08-18. Spot $108.83.
Put/Call (OI)
1.85
191k P / 103k C
Put/Call (Volume)
1.18
6k P / 5k C today
30d ATM IV
38%
annualized implied move
Call wall
$120
14k contracts
Put wall
$90
34k contracts
Tail hedging
2.6×
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 | 20k | 19k | 0.95 | 1k |
| 2026-08-28 | 928 | 2k | 1.74 | 2k |
| 2026-09-04 | 653 | 762 | 1.17 | 100 |
| 2026-09-11 | 108 | 77 | 0.71 | 119 |
| 2026-09-18 | 26k | 30k | 1.16 | 1k |
| 2026-09-25 | 76 | 67 | 0.88 | 36 |
| 2026-10-02 | 14 | 3 | 0.21 | 82 |
| 2026-10-16 | 5k | 5k | 1.04 | 594 |
| 2026-11-20 | 389 | 137 | 0.35 | 345 |
| 2026-12-18 | 14k | 82k | 6.05 | 299 |
| 2027-01-15 | 19k | 25k | 1.29 | 933 |
| 2027-03-19 | 3k | 3k | 1.18 | 50 |
| 2027-05-21 | 372 | 851 | 2.29 | 59 |
| 2027-06-17 | 4k | 8k | 1.96 | 698 |
| 2027-12-17 | 2k | 3k | 1.76 | 16 |
| 2028-01-21 | 9k | 13k | 1.42 | 3k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.