Delayed CBOE data, snapshot 2026-08-18. Spot $47.6.
Put/Call (OI)
0.44
161k P / 368k C
Put/Call (Volume)
0.30
7k P / 22k C today
30d ATM IV
35%
annualized implied move
Call wall
$50
47k contracts
Put wall
$40
30k contracts
Tail hedging
0.9×
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 | 107k | 22k | 0.20 | 8k |
| 2026-08-28 | 5k | 3k | 0.63 | 3k |
| 2026-09-04 | 2k | 985 | 0.57 | 845 |
| 2026-09-11 | 2k | 607 | 0.38 | 1k |
| 2026-09-18 | 95k | 31k | 0.32 | 6k |
| 2026-09-25 | 1k | 283 | 0.26 | 256 |
| 2026-10-02 | 313 | 14 | 0.04 | 105 |
| 2026-10-16 | 39k | 24k | 0.62 | 3k |
| 2026-11-20 | 563 | 116 | 0.21 | 1k |
| 2026-12-18 | 19k | 9k | 0.46 | 3k |
| 2027-01-15 | 68k | 41k | 0.61 | 1k |
| 2027-03-19 | 3k | 3k | 1.13 | 137 |
| 2027-06-17 | 11k | 11k | 1.05 | 390 |
| 2028-01-21 | 12k | 10k | 0.79 | 76 |
| 2028-12-15 | 4k | 5k | 1.16 | 57 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.