Delayed CBOE data, snapshot 2026-08-18. Spot $339.2.
Put/Call (OI)
0.85
109k P / 129k C
Put/Call (Volume)
1.09
26k P / 24k C today
30d ATM IV
30%
annualized implied move
Call wall
$400
13k contracts
Put wall
$320
9k contracts
Tail hedging
0.7×
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 | 28k | 22k | 0.77 | 35k |
| 2026-08-28 | 4k | 3k | 0.59 | 3k |
| 2026-09-04 | 2k | 2k | 1.05 | 1k |
| 2026-09-11 | 941 | 725 | 0.77 | 388 |
| 2026-09-18 | 22k | 27k | 1.20 | 6k |
| 2026-09-25 | 196 | 274 | 1.40 | 272 |
| 2026-10-02 | 55 | 25 | 0.45 | 70 |
| 2026-10-16 | 10k | 4k | 0.39 | 899 |
| 2026-11-20 | 4k | 6k | 1.64 | 242 |
| 2026-12-18 | 10k | 10k | 1.01 | 242 |
| 2027-01-15 | 22k | 18k | 0.81 | 664 |
| 2027-02-19 | 680 | 1k | 2.02 | 109 |
| 2027-03-19 | 2k | 2k | 1.04 | 182 |
| 2027-06-17 | 11k | 7k | 0.61 | 225 |
| 2027-12-17 | 2k | 2k | 1.01 | 199 |
| 2028-01-21 | 7k | 4k | 0.50 | 49 |
| 2028-12-15 | 2k | 1k | 0.72 | 41 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.