Delayed CBOE data, snapshot 2026-08-18. Spot $110.58.
Put/Call (OI)
0.88
210k P / 239k C
Put/Call (Volume)
0.37
13k P / 35k C today
30d ATM IV
22%
annualized implied move
Call wall
$115
23k contracts
Put wall
$90
17k contracts
Tail hedging
5.4×
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 | 16k | 26k | 1.66 | 33k |
| 2026-08-28 | 2k | 6k | 2.42 | 951 |
| 2026-09-04 | 778 | 1k | 1.31 | 599 |
| 2026-09-11 | 2k | 615 | 0.35 | 111 |
| 2026-09-18 | 54k | 40k | 0.75 | 9k |
| 2026-09-25 | 382 | 123 | 0.32 | 65 |
| 2026-10-02 | 7 | 5 | 0.71 | 53 |
| 2026-10-16 | 14k | 15k | 1.07 | 1k |
| 2026-11-20 | 4k | 2k | 0.57 | 208 |
| 2026-12-18 | 51k | 24k | 0.47 | 389 |
| 2027-01-15 | 50k | 54k | 1.08 | 364 |
| 2027-02-19 | 680 | 822 | 1.21 | 35 |
| 2027-03-19 | 10k | 6k | 0.57 | 256 |
| 2027-06-17 | 19k | 20k | 1.02 | 758 |
| 2028-01-21 | 9k | 13k | 1.36 | 1k |
| 2028-12-15 | 5k | 1k | 0.27 | 65 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.