Delayed CBOE data, snapshot 2026-08-19. Spot $363.27.
Put/Call (OI)
1.14
368k P / 324k C
Put/Call (Volume)
0.82
12k P / 15k C today
30d ATM IV
19%
annualized implied move
Call wall
$370
20k contracts
Put wall
$270
34k contracts
Tail hedging
5.9×
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 | 56k | 64k | 1.14 | 13k |
| 2026-08-28 | 8k | 6k | 0.70 | 2k |
| 2026-09-04 | 3k | 4k | 1.13 | 474 |
| 2026-09-11 | 1k | 925 | 0.65 | 760 |
| 2026-09-18 | 57k | 82k | 1.44 | 3k |
| 2026-09-25 | 503 | 578 | 1.15 | 105 |
| 2026-10-02 | 191 | 111 | 0.58 | 326 |
| 2026-10-16 | 25k | 20k | 0.79 | 3k |
| 2026-11-20 | 14k | 14k | 0.97 | 818 |
| 2026-12-18 | 31k | 30k | 0.96 | 498 |
| 2027-01-15 | 56k | 70k | 1.24 | 1k |
| 2027-03-19 | 13k | 14k | 1.07 | 672 |
| 2027-06-17 | 25k | 30k | 1.19 | 464 |
| 2027-12-17 | 9k | 10k | 1.14 | 687 |
| 2028-01-21 | 15k | 18k | 1.16 | 279 |
| 2028-12-15 | 9k | 7k | 0.75 | 80 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.