Delayed CBOE data, snapshot 2026-08-18. Spot $222.2.
Put/Call (OI)
0.99
98k P / 99k C
Put/Call (Volume)
0.15
4k P / 27k C today
30d ATM IV
24%
annualized implied move
Call wall
$230
13k contracts
Put wall
$195
11k contracts
Tail hedging
4.6×
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 | 16k | 29k | 1.83 | 16k |
| 2026-08-28 | 2k | 5k | 2.32 | 819 |
| 2026-09-04 | 854 | 1k | 1.57 | 843 |
| 2026-09-11 | 466 | 490 | 1.05 | 2k |
| 2026-09-18 | 18k | 16k | 0.92 | 8k |
| 2026-09-25 | 165 | 168 | 1.02 | 71 |
| 2026-10-02 | 0 | 0 | — | 68 |
| 2026-10-16 | 2k | 1k | 0.60 | 382 |
| 2026-11-20 | 8k | 8k | 0.96 | 529 |
| 2026-12-18 | 10k | 7k | 0.66 | 1k |
| 2027-01-15 | 18k | 18k | 1.04 | 677 |
| 2027-02-19 | 9k | 941 | 0.10 | 325 |
| 2027-03-19 | 4k | 5k | 1.23 | 111 |
| 2027-06-17 | 4k | 2k | 0.50 | 191 |
| 2028-01-21 | 7k | 4k | 0.60 | 137 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.