Delayed CBOE data, snapshot 2026-08-18. Spot $604.32.
Put/Call (OI)
1.05
30k P / 28k C
Put/Call (Volume)
3.03
1k P / 402 C today
30d ATM IV
54%
annualized implied move
Call wall
$790
2k contracts
Put wall
$400
2k contracts
Tail hedging
1.7×
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 | 3k | 3k | 1.02 | 432 |
| 2026-08-28 | 716 | 557 | 0.78 | 513 |
| 2026-09-04 | 629 | 383 | 0.61 | 127 |
| 2026-09-11 | 104 | 320 | 3.08 | 16 |
| 2026-09-18 | 8k | 7k | 0.81 | 211 |
| 2026-09-25 | 155 | 263 | 1.70 | 14 |
| 2026-10-02 | 12 | 96 | 8.00 | 78 |
| 2026-12-18 | 3k | 2k | 0.77 | 46 |
| 2027-01-15 | 6k | 8k | 1.22 | 68 |
| 2027-03-19 | 974 | 2k | 1.78 | 29 |
| 2027-06-17 | 171 | 662 | 3.87 | 64 |
| 2028-01-21 | 5k | 6k | 1.15 | 24 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.