Delayed CBOE data, snapshot 2026-08-18. Spot $341.38.
Put/Call (OI)
0.77
792k P / 1.0M C
Put/Call (Volume)
0.42
46k P / 109k C today
30d ATM IV
27%
annualized implied move
Call wall
$400
76k contracts
Put wall
$330
53k 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 | 139k | 109k | 0.78 | 61k |
| 2026-08-28 | 39k | 30k | 0.77 | 20k |
| 2026-09-04 | 13k | 9k | 0.75 | 8k |
| 2026-09-11 | 7k | 4k | 0.60 | 3k |
| 2026-09-18 | 181k | 171k | 0.94 | 15k |
| 2026-09-25 | 4k | 3k | 0.83 | 3k |
| 2026-10-02 | 169 | 210 | 1.24 | 1k |
| 2026-10-16 | 90k | 80k | 0.89 | 11k |
| 2026-11-20 | 25k | 21k | 0.86 | 4k |
| 2026-12-18 | 118k | 81k | 0.69 | 8k |
| 2027-01-15 | 171k | 134k | 0.78 | 6k |
| 2027-02-19 | 8k | 5k | 0.66 | 4k |
| 2027-03-19 | 42k | 25k | 0.61 | 4k |
| 2027-06-17 | 61k | 28k | 0.46 | 4k |
| 2027-09-17 | 11k | 9k | 0.83 | 501 |
| 2027-12-17 | 39k | 36k | 0.91 | 478 |
| 2028-01-21 | 48k | 26k | 0.55 | 1k |
| 2028-12-15 | 36k | 20k | 0.56 | 716 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.