Delayed CBOE data, snapshot 2026-08-18. Spot $265.63.
Put/Call (OI)
0.44
28k P / 63k C
Put/Call (Volume)
0.29
263 P / 914 C today
30d ATM IV
31%
annualized implied move
Call wall
$280
11k contracts
Put wall
$230
3k contracts
Tail hedging
0.8×
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 | 2k | 0.14 | 633 |
| 2026-08-28 | 2k | 477 | 0.30 | 163 |
| 2026-09-04 | 396 | 201 | 0.51 | 61 |
| 2026-09-11 | 198 | 26 | 0.13 | 39 |
| 2026-09-18 | 12k | 6k | 0.46 | 161 |
| 2026-09-25 | 125 | 42 | 0.34 | 4 |
| 2026-10-02 | 20 | 24 | 1.20 | 3 |
| 2026-11-20 | 3k | 2k | 0.94 | 25 |
| 2026-12-18 | 3k | 973 | 0.32 | 54 |
| 2027-01-15 | 20k | 11k | 0.54 | 14 |
| 2027-03-19 | 358 | 229 | 0.64 | 6 |
| 2027-06-17 | 4k | 3k | 0.81 | 10 |
| 2028-01-21 | 2k | 2k | 0.85 | 4 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.