Delayed CBOE data, snapshot 2026-08-18. Spot $561.63.
Put/Call (OI)
0.39
2k P / 4k C
Put/Call (Volume)
0.29
28 P / 97 C today
30d ATM IV
26%
annualized implied move
Call wall
$570
227 contracts
Put wall
$520
313 contracts
Tail hedging
4.0×
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 | 556 | 577 | 1.04 | 6 |
| 2026-09-18 | 647 | 342 | 0.53 | 22 |
| 2026-11-20 | 3k | 559 | 0.20 | 25 |
| 2026-12-18 | 206 | 203 | 0.99 | 52 |
| 2027-03-19 | 117 | 19 | 0.16 | 20 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.