Delayed CBOE data, snapshot 2026-08-18. Spot $96.51.
Put/Call (OI)
0.28
1k P / 4k C
Put/Call (Volume)
0.17
2 P / 12 C today
30d ATM IV
28%
annualized implied move
Call wall
$110
2k contracts
Put wall
$85
437 contracts
Tail hedging
0.3×
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 | 809 | 0.67 | 2 |
| 2026-09-18 | 68 | 8 | 0.12 | 5 |
| 2026-10-16 | 1k | 147 | 0.14 | 3 |
| 2027-01-15 | 1k | 74 | 0.05 | 4 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.