Delayed CBOE data, snapshot 2026-08-18. Spot $280.
Put/Call (OI)
0.53
7k P / 13k C
Put/Call (Volume)
0.76
1k P / 2k C today
30d ATM IV
23%
annualized implied move
Call wall
$300
2k contracts
Put wall
$280
1k 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 | 4k | 1k | 0.32 | 877 |
| 2026-08-28 | 319 | 125 | 0.39 | 159 |
| 2026-09-04 | 58 | 67 | 1.16 | 72 |
| 2026-09-11 | 190 | 43 | 0.23 | 51 |
| 2026-09-18 | 1k | 949 | 0.70 | 183 |
| 2026-09-25 | 200 | 33 | 0.17 | 87 |
| 2026-10-02 | 0 | 0 | — | 12 |
| 2026-10-16 | 1k | 623 | 0.58 | 154 |
| 2026-11-20 | 2k | 1k | 0.58 | 340 |
| 2027-01-15 | 3k | 2k | 0.60 | 513 |
| 2027-02-19 | 221 | 224 | 1.01 | 57 |
| 2028-01-21 | 1k | 962 | 0.72 | 227 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.