Delayed CBOE data, snapshot 2026-08-18. Spot $31.78.
Put/Call (OI)
0.51
41k P / 80k C
Put/Call (Volume)
0.16
1k P / 8k C today
30d ATM IV
40%
annualized implied move
Call wall
$35
16k contracts
Put wall
$27.5
18k contracts
Tail hedging
0.6×
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 | 15k | 9k | 0.62 | 3k |
| 2026-09-18 | 13k | 8k | 0.65 | 1k |
| 2026-11-20 | 3k | 2k | 0.83 | 272 |
| 2026-12-18 | 4k | 11k | 2.81 | 446 |
| 2027-01-15 | 15k | 6k | 0.39 | 674 |
| 2027-02-19 | 307 | 807 | 2.63 | 26 |
| 2027-03-19 | 11k | 808 | 0.07 | 164 |
| 2027-06-17 | 1k | 620 | 0.45 | 81 |
| 2028-01-21 | 18k | 2k | 0.12 | 3k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.