Delayed CBOE data, snapshot 2026-08-18. Spot $40.63.
Put/Call (OI)
0.22
4k P / 21k C
Put/Call (Volume)
0.12
104 P / 868 C today
30d ATM IV
19%
annualized implied move
Call wall
$42
6k contracts
Put wall
$39
811 contracts
Tail hedging
0.1×
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 | 9k | 2k | 0.22 | 97 |
| 2026-09-18 | 5k | 1k | 0.21 | 52 |
| 2026-11-20 | 751 | 414 | 0.55 | 108 |
| 2026-12-18 | 1k | 357 | 0.27 | 702 |
| 2027-01-15 | 928 | 505 | 0.54 | 4 |
| 2027-02-19 | 57 | 1 | 0.02 | 0 |
| 2027-12-17 | 3k | 76 | 0.02 | 9 |
| 2028-01-21 | 433 | 84 | 0.19 | 0 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.