Delayed CBOE data, snapshot 2026-08-18. Spot $188.27.
Put/Call (OI)
0.73
3k P / 4k C
Put/Call (Volume)
0.04
6 P / 165 C today
30d ATM IV
24%
annualized implied move
Call wall
$195
550 contracts
Put wall
$165
783 contracts
Tail hedging
8.5×
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 | 2k | 1.09 | 56 |
| 2026-09-18 | 534 | 220 | 0.41 | 97 |
| 2026-11-20 | 1k | 427 | 0.41 | 11 |
| 2027-02-19 | 527 | 122 | 0.23 | 7 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.