Delayed CBOE data, snapshot 2026-08-18. Spot $26.03.
Put/Call (OI)
0.55
32k P / 59k C
Put/Call (Volume)
0.58
2k P / 3k C today
30d ATM IV
17%
annualized implied move
Call wall
$27.5
24k contracts
Put wall
$25
16k contracts
Tail hedging
0.1×
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 | 8k | 5k | 0.59 | 94 |
| 2026-09-18 | 17k | 6k | 0.33 | 3k |
| 2026-12-18 | 12k | 7k | 0.61 | 129 |
| 2027-01-15 | 11k | 6k | 0.57 | 60 |
| 2027-03-19 | 3k | 2k | 0.47 | 314 |
| 2027-06-17 | 5k | 4k | 0.83 | 817 |
| 2028-01-21 | 3k | 3k | 1.01 | 377 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.