Delayed CBOE data, snapshot 2026-08-18. Spot $71.62.
Put/Call (OI)
0.20
2k P / 10k C
Put/Call (Volume)
0.43
21 P / 49 C today
30d ATM IV
18%
annualized implied move
Call wall
$75
3k contracts
Put wall
$70
853 contracts
Tail hedging
0.1×
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 | 2k | 542 | 0.22 | 47 |
| 2026-09-18 | 294 | 149 | 0.51 | 13 |
| 2026-10-16 | 2k | 731 | 0.37 | 5 |
| 2027-01-15 | 5k | 594 | 0.11 | 5 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.