Delayed CBOE data, snapshot 2026-08-18. Spot $212.51.
Put/Call (OI)
0.56
72k P / 128k C
Put/Call (Volume)
1.21
5k P / 4k C today
30d ATM IV
41%
annualized implied move
Call wall
$240
9k contracts
Put wall
$145
6k contracts
Tail hedging
1.4×
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 | 12k | 16k | 1.39 | 4k |
| 2026-08-28 | 1k | 1k | 0.89 | 505 |
| 2026-09-04 | 987 | 1k | 1.19 | 189 |
| 2026-09-11 | 271 | 331 | 1.22 | 712 |
| 2026-09-18 | 39k | 15k | 0.39 | 933 |
| 2026-09-25 | 263 | 124 | 0.47 | 61 |
| 2026-10-02 | 321 | 36 | 0.11 | 253 |
| 2026-11-20 | 26k | 5k | 0.18 | 325 |
| 2026-12-18 | 3k | 6k | 1.91 | 267 |
| 2027-01-15 | 25k | 17k | 0.69 | 70 |
| 2027-02-19 | 348 | 468 | 1.34 | 90 |
| 2027-03-19 | 5k | 4k | 0.76 | 181 |
| 2027-06-17 | 364 | 1k | 2.91 | 3 |
| 2027-12-17 | 3k | 2k | 0.43 | 8 |
| 2028-01-21 | 11k | 4k | 0.34 | 2k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.