Delayed CBOE data, snapshot 2026-08-18. Spot $262.37.
Put/Call (OI)
0.70
164k P / 233k C
Put/Call (Volume)
0.56
8k P / 14k C today
30d ATM IV
22%
annualized implied move
Call wall
$280
35k contracts
Put wall
$210
24k contracts
Tail hedging
3.0×
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 | 41k | 27k | 0.65 | 11k |
| 2026-08-28 | 3k | 3k | 1.11 | 2k |
| 2026-09-04 | 2k | 5k | 2.28 | 1k |
| 2026-09-11 | 784 | 629 | 0.80 | 776 |
| 2026-09-18 | 59k | 35k | 0.59 | 2k |
| 2026-09-25 | 269 | 629 | 2.34 | 521 |
| 2026-10-02 | 88 | 47 | 0.53 | 146 |
| 2026-10-16 | 31k | 18k | 0.59 | 1k |
| 2026-12-18 | 24k | 21k | 0.87 | 470 |
| 2027-01-15 | 41k | 32k | 0.77 | 1k |
| 2027-03-19 | 6k | 4k | 0.62 | 599 |
| 2027-06-17 | 8k | 7k | 0.96 | 222 |
| 2027-12-17 | 4k | 4k | 0.80 | 74 |
| 2028-01-21 | 11k | 5k | 0.49 | 596 |
| 2028-12-15 | 2k | 2k | 1.07 | 25 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.