Delayed CBOE data, snapshot 2026-08-18. Spot $18.79.
Put/Call (OI)
0.39
54k P / 136k C
Put/Call (Volume)
0.87
597 P / 688 C today
30d ATM IV
22%
annualized implied move
Call wall
$20
33k contracts
Put wall
$18
13k contracts
Tail hedging
0.4×
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 | 6k | 0.62 | 317 |
| 2026-08-28 | 224 | 75 | 0.33 | 22 |
| 2026-09-04 | 1k | 61 | 0.05 | 33 |
| 2026-09-11 | 1k | 211 | 0.15 | 6 |
| 2026-09-18 | 46k | 12k | 0.26 | 72 |
| 2026-09-25 | 24 | 1 | 0.04 | 10 |
| 2026-10-02 | 20 | 0 | 0.00 | 2 |
| 2026-11-20 | 4k | 4k | 1.15 | 327 |
| 2026-12-18 | 8k | 6k | 0.72 | 8 |
| 2027-01-15 | 51k | 15k | 0.29 | 34 |
| 2027-02-19 | 408 | 3 | 0.01 | 1 |
| 2027-03-19 | 307 | 573 | 1.87 | 4 |
| 2027-06-17 | 567 | 450 | 0.79 | 113 |
| 2027-12-17 | 5k | 561 | 0.12 | 4 |
| 2028-01-21 | 9k | 9k | 0.99 | 332 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.