Delayed CBOE data, snapshot 2026-08-18. Spot $203.84.
Put/Call (OI)
1.09
33k P / 31k C
Put/Call (Volume)
0.96
1k P / 1k C today
30d ATM IV
27%
annualized implied move
Call wall
$230
5k contracts
Put wall
$190
6k contracts
Tail hedging
0.3×
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 | 8k | 9k | 1.24 | 1k |
| 2026-08-28 | 631 | 1k | 2.11 | 87 |
| 2026-09-04 | 47 | 596 | 12.68 | 200 |
| 2026-09-11 | 178 | 55 | 0.31 | 44 |
| 2026-09-18 | 4k | 6k | 1.61 | 399 |
| 2026-09-25 | 22 | 39 | 1.77 | 21 |
| 2026-10-02 | 2 | 1 | 0.50 | 33 |
| 2026-11-20 | 3k | 928 | 0.30 | 169 |
| 2026-12-18 | 2k | 1k | 0.79 | 26 |
| 2027-01-15 | 6k | 9k | 1.42 | 107 |
| 2027-02-19 | 125 | 371 | 2.97 | 4 |
| 2027-03-19 | 1k | 566 | 0.38 | 38 |
| 2027-06-17 | 4k | 2k | 0.63 | 88 |
| 2028-01-21 | 2k | 1k | 0.59 | 14 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.