Delayed CBOE data, snapshot 2026-08-18. Spot $46.61.
Put/Call (OI)
0.93
355k P / 380k C
Put/Call (Volume)
0.56
15k P / 28k C today
30d ATM IV
81%
annualized implied move
Call wall
$50
47k contracts
Put wall
$40
52k contracts
Tail hedging
1.3×
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 | 97k | 95k | 0.98 | 21k |
| 2026-08-28 | 13k | 10k | 0.76 | 5k |
| 2026-09-04 | 6k | 4k | 0.55 | 2k |
| 2026-09-11 | 5k | 4k | 0.87 | 1k |
| 2026-09-18 | 56k | 50k | 0.89 | 5k |
| 2026-09-25 | 1k | 698 | 0.48 | 406 |
| 2026-10-02 | 348 | 38 | 0.11 | 167 |
| 2026-10-16 | 25k | 37k | 1.50 | 2k |
| 2026-11-20 | 30k | 12k | 0.41 | 1k |
| 2026-12-18 | 30k | 29k | 0.97 | 3k |
| 2027-01-15 | 66k | 84k | 1.26 | 801 |
| 2027-03-19 | 9k | 5k | 0.55 | 290 |
| 2027-06-17 | 7k | 12k | 1.68 | 391 |
| 2028-01-21 | 34k | 13k | 0.39 | 877 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.