Delayed CBOE data, snapshot 2026-08-18. Spot $131.12.
Put/Call (OI)
1.19
4k P / 3k C
Put/Call (Volume)
3.67
33 P / 9 C today
30d ATM IV
24%
annualized implied move
Call wall
$140
1k contracts
Put wall
$115
638 contracts
Tail hedging
1.0×
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 | 1k | 280 | 0.23 | 7 |
| 2026-09-18 | 1k | 2k | 1.41 | 24 |
| 2026-12-18 | 831 | 2k | 2.01 | 10 |
| 2027-03-19 | 33 | 231 | 7.00 | 1 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.