Delayed CBOE data, snapshot 2026-08-18. Spot $29.4.
Put/Call (OI)
1.43
317k P / 222k C
Put/Call (Volume)
2.87
16k P / 6k C today
30d ATM IV
58%
annualized implied move
Call wall
$30
33k contracts
Put wall
$24
34k contracts
Tail hedging
3.6×
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 | 50k | 53k | 1.07 | 2k |
| 2026-08-28 | 5k | 8k | 1.59 | 3k |
| 2026-09-04 | 1k | 1k | 0.94 | 516 |
| 2026-09-11 | 368 | 382 | 1.04 | 171 |
| 2026-09-18 | 46k | 140k | 3.05 | 9k |
| 2026-09-25 | 251 | 142 | 0.57 | 163 |
| 2026-10-02 | 35 | 1k | 28.63 | 75 |
| 2026-10-16 | 5k | 38k | 7.26 | 770 |
| 2026-11-20 | 14k | 12k | 0.81 | 2k |
| 2026-12-18 | 17k | 16k | 0.95 | 2k |
| 2027-01-15 | 45k | 22k | 0.48 | 884 |
| 2027-02-19 | 2k | 927 | 0.48 | 107 |
| 2027-03-19 | 7k | 6k | 0.78 | 16 |
| 2027-06-17 | 7k | 7k | 0.98 | 492 |
| 2028-01-21 | 21k | 11k | 0.55 | 218 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.