Delayed CBOE data, snapshot 2026-08-18. Spot $2,248.18.
Put/Call (OI)
0.91
846 P / 934 C
Put/Call (Volume)
1.67
70 P / 42 C today
30d ATM IV
22%
annualized implied move
Call wall
$2,400
87 contracts
Put wall
$2,020
54 contracts
Tail hedging
6.8×
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 | 556 | 1.32 | 51 |
| 2026-09-18 | 155 | 43 | 0.28 | 53 |
| 2026-11-20 | 256 | 195 | 0.76 | 8 |
| 2027-02-19 | 103 | 52 | 0.50 | 0 |
| 2027-05-21 | 0 | 0 | — | 0 |
| 2027-08-20 | 0 | 0 | — | 0 |
| 2027-11-19 | 0 | 0 | — | 0 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.