Delayed CBOE data, snapshot 2026-08-18. Spot $192.57.
Put/Call (OI)
1.15
24k P / 21k C
Put/Call (Volume)
0.55
390 P / 709 C today
30d ATM IV
48%
annualized implied move
Call wall
$200
3k contracts
Put wall
$185
3k contracts
Tail hedging
2.1×
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 | 4k | 8k | 2.04 | 455 |
| 2026-08-28 | 365 | 178 | 0.49 | 92 |
| 2026-09-04 | 247 | 242 | 0.98 | 10 |
| 2026-09-11 | 83 | 44 | 0.53 | 7 |
| 2026-09-18 | 3k | 3k | 0.85 | 264 |
| 2026-09-25 | 24 | 74 | 3.08 | 4 |
| 2026-10-02 | 4 | 12 | 3.00 | 8 |
| 2026-10-16 | 770 | 588 | 0.76 | 29 |
| 2026-11-20 | 4k | 2k | 0.54 | 203 |
| 2026-12-18 | 366 | 893 | 2.44 | 7 |
| 2027-01-15 | 6k | 7k | 1.11 | 12 |
| 2027-03-19 | 133 | 336 | 2.53 | 2 |
| 2027-07-16 | 921 | 1k | 1.19 | 4 |
| 2027-12-17 | 265 | 588 | 2.22 | 2 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.