Delayed CBOE data, snapshot 2026-08-18. Spot $157.99.
Put/Call (OI)
0.94
52k P / 55k C
Put/Call (Volume)
0.30
630 P / 2k C today
30d ATM IV
15%
annualized implied move
Call wall
$165
3k contracts
Put wall
$30
7k contracts
Tail hedging
7.2×
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 | 3k | 2k | 0.52 | 471 |
| 2026-08-28 | 3k | 842 | 0.33 | 265 |
| 2026-09-04 | 98 | 219 | 2.23 | 46 |
| 2026-09-11 | 182 | 213 | 1.17 | 18 |
| 2026-09-18 | 12k | 9k | 0.77 | 484 |
| 2026-09-25 | 2k | 39 | 0.02 | 529 |
| 2026-10-02 | 4 | 120 | 30.00 | 9 |
| 2026-10-16 | 4k | 2k | 0.50 | 621 |
| 2026-12-18 | 9k | 5k | 0.63 | 84 |
| 2027-01-15 | 14k | 29k | 2.00 | 81 |
| 2027-03-19 | 1k | 1k | 0.81 | 52 |
| 2027-06-17 | 968 | 474 | 0.49 | 4 |
| 2028-01-21 | 3k | 1k | 0.39 | 4 |
| 2028-12-15 | 3k | 709 | 0.25 | 36 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.