Delayed CBOE data, snapshot 2026-08-18. Spot $143.63.
Put/Call (OI)
0.37
2k P / 4k C
Put/Call (Volume)
0.30
12 P / 40 C today
30d ATM IV
28%
annualized implied move
Call wall
$175
1k contracts
Put wall
$140
376 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 | 555 | 380 | 0.68 | 8 |
| 2026-09-18 | 238 | 239 | 1.00 | 16 |
| 2026-10-16 | 1k | 183 | 0.18 | 11 |
| 2026-12-18 | 629 | 165 | 0.26 | 1 |
| 2027-01-15 | 2k | 535 | 0.34 | 16 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.