Delayed CBOE data, snapshot 2026-08-18. Spot $128.2.
Put/Call (OI)
1.31
28k P / 22k C
Put/Call (Volume)
1.45
3k P / 2k C today
30d ATM IV
31%
annualized implied move
Call wall
$155
2k contracts
Put wall
$22.5
7k contracts
Tail hedging
1.2×
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 | 8k | 10k | 1.25 | 4k |
| 2026-08-28 | 902 | 856 | 0.95 | 800 |
| 2026-09-04 | 190 | 165 | 0.87 | 124 |
| 2026-09-11 | 272 | 166 | 0.61 | 77 |
| 2026-09-18 | 3k | 4k | 1.47 | 205 |
| 2026-09-25 | 1k | 172 | 0.17 | 76 |
| 2026-10-02 | 26 | 26 | 1.00 | 54 |
| 2026-11-20 | 1k | 668 | 0.49 | 185 |
| 2026-12-18 | 1k | 800 | 0.64 | 177 |
| 2027-01-15 | 5k | 11k | 2.28 | 47 |
| 2027-02-19 | 55 | 174 | 3.16 | 6 |
| 2027-03-19 | 248 | 252 | 1.02 | 8 |
| 2027-06-17 | 163 | 207 | 1.27 | 4 |
| 2028-01-21 | 938 | 485 | 0.52 | 101 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.