Delayed CBOE data, snapshot 2026-08-18. Spot $32.44.
Put/Call (OI)
0.55
107k P / 193k C
Put/Call (Volume)
0.91
6k P / 6k C today
30d ATM IV
21%
annualized implied move
Call wall
$35
44k contracts
Put wall
$27
17k contracts
Tail hedging
1.2×
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 | 25k | 7k | 0.28 | 2k |
| 2026-08-28 | 5k | 822 | 0.18 | 2k |
| 2026-09-04 | 4k | 268 | 0.07 | 213 |
| 2026-09-11 | 4k | 75 | 0.02 | 62 |
| 2026-09-18 | 54k | 36k | 0.67 | 2k |
| 2026-09-25 | 1k | 509 | 0.40 | 836 |
| 2026-10-02 | 248 | 222 | 0.90 | 40 |
| 2026-12-18 | 18k | 9k | 0.47 | 1k |
| 2027-01-15 | 42k | 17k | 0.39 | 308 |
| 2027-03-19 | 8k | 4k | 0.55 | 121 |
| 2027-06-17 | 11k | 18k | 1.62 | 2k |
| 2028-01-21 | 19k | 14k | 0.71 | 1k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.