Delayed CBOE data, snapshot 2026-08-18. Spot $44.66.
Put/Call (OI)
0.70
12k P / 17k C
Put/Call (Volume)
0.03
5 P / 179 C today
30d ATM IV
38%
annualized implied move
Call wall
$47
16k contracts
Put wall
$40
6k contracts
Tail hedging
21.6×
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 | 420 | 11k | 26.51 | 137 |
| 2026-09-18 | 30 | 35 | 1.17 | 8 |
| 2026-10-16 | 16k | 316 | 0.02 | 21 |
| 2027-01-15 | 417 | 713 | 1.71 | 18 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.