Delayed CBOE data, snapshot 2026-08-19. Spot $140.6.
Put/Call (OI)
0.47
127k P / 273k C
Put/Call (Volume)
0.94
8k P / 8k C today
30d ATM IV
21%
annualized implied move
Call wall
$155
67k contracts
Put wall
$130
22k contracts
Tail hedging
0.2×
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 | 34k | 22k | 0.66 | 4k |
| 2026-08-28 | 4k | 3k | 0.74 | 3k |
| 2026-09-04 | 3k | 2k | 0.74 | 439 |
| 2026-09-11 | 2k | 1k | 0.49 | 653 |
| 2026-09-18 | 93k | 34k | 0.36 | 3k |
| 2026-09-25 | 629 | 411 | 0.65 | 622 |
| 2026-10-02 | 89 | 190 | 2.13 | 420 |
| 2026-10-16 | 55k | 8k | 0.15 | 875 |
| 2026-11-20 | 7k | 5k | 0.80 | 1k |
| 2026-12-18 | 13k | 9k | 0.75 | 343 |
| 2027-01-15 | 37k | 22k | 0.60 | 496 |
| 2027-03-19 | 6k | 6k | 0.97 | 118 |
| 2027-06-17 | 6k | 6k | 1.01 | 178 |
| 2028-01-21 | 14k | 7k | 0.52 | 298 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.