Delayed CBOE data, snapshot 2026-08-18. Spot $1,883.
Put/Call (OI)
1.27
11k P / 8k C
Put/Call (Volume)
1.79
2k P / 1k C today
30d ATM IV
55%
annualized implied move
Call wall
$2,000
407 contracts
Put wall
$1,520
623 contracts
Tail hedging
3.4×
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 | 2k | 3k | 1.41 | 1k |
| 2026-09-18 | 812 | 1k | 1.28 | 1k |
| 2026-10-16 | 1k | 2k | 1.30 | 50 |
| 2026-12-18 | 3k | 4k | 1.41 | 142 |
| 2027-01-15 | 1k | 766 | 0.66 | 128 |
| 2027-12-17 | 130 | 178 | 1.37 | 50 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.