Delayed CBOE data, snapshot 2026-08-18. Spot $138.51.
Put/Call (OI)
1.28
592k P / 462k C
Put/Call (Volume)
0.66
11k P / 17k C today
30d ATM IV
27%
annualized implied move
Call wall
$150
56k contracts
Put wall
$100
49k contracts
Tail hedging
6.0×
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 | 69k | 49k | 0.71 | 14k |
| 2026-08-28 | 7k | 3k | 0.48 | 2k |
| 2026-09-04 | 2k | 6k | 3.09 | 650 |
| 2026-09-11 | 624 | 516 | 0.83 | 132 |
| 2026-09-18 | 52k | 66k | 1.28 | 4k |
| 2026-09-25 | 392 | 305 | 0.78 | 491 |
| 2026-10-02 | 7 | 19 | 2.71 | 136 |
| 2026-10-16 | 25k | 28k | 1.12 | 2k |
| 2026-11-20 | 19k | 19k | 1.01 | 709 |
| 2026-12-18 | 46k | 102k | 2.24 | 1k |
| 2027-01-15 | 93k | 176k | 1.90 | 2k |
| 2027-03-19 | 19k | 18k | 0.97 | 220 |
| 2027-06-17 | 68k | 71k | 1.05 | 550 |
| 2027-09-17 | 4k | 2k | 0.41 | 222 |
| 2028-01-21 | 36k | 35k | 0.98 | 57 |
| 2028-12-15 | 21k | 15k | 0.72 | 92 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.