Delayed CBOE data, snapshot 2026-08-18. Spot $23.07.
Put/Call (OI)
0.91
160k P / 175k C
Put/Call (Volume)
0.64
5k P / 8k C today
30d ATM IV
41%
annualized implied move
Call wall
$25
21k contracts
Put wall
$18
23k contracts
Tail hedging
1.0×
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 | 36k | 30k | 0.85 | 4k |
| 2026-08-28 | 3k | 5k | 1.83 | 2k |
| 2026-09-04 | 1k | 1k | 0.86 | 203 |
| 2026-09-11 | 630 | 614 | 0.97 | 395 |
| 2026-09-18 | 33k | 34k | 1.02 | 2k |
| 2026-09-25 | 527 | 190 | 0.36 | 284 |
| 2026-10-02 | 69 | 17 | 0.25 | 183 |
| 2026-11-20 | 11k | 8k | 0.73 | 172 |
| 2026-12-18 | 15k | 18k | 1.18 | 124 |
| 2027-01-15 | 40k | 28k | 0.69 | 2k |
| 2027-02-19 | 755 | 589 | 0.78 | 81 |
| 2027-03-19 | 8k | 13k | 1.60 | 66 |
| 2027-06-17 | 659 | 2k | 2.55 | 501 |
| 2027-12-17 | 4k | 7k | 1.60 | 453 |
| 2028-01-21 | 21k | 12k | 0.61 | 71 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.