Delayed CBOE data, snapshot 2026-08-18. Spot $181.06.
Put/Call (OI)
0.77
15k P / 20k C
Put/Call (Volume)
2.24
963 P / 429 C today
30d ATM IV
25%
annualized implied move
Call wall
$200
3k contracts
Put wall
$180
2k contracts
Tail hedging
0.6×
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 | 3k | 0.83 | 256 |
| 2026-08-28 | 249 | 264 | 1.06 | 141 |
| 2026-09-04 | 57 | 149 | 2.61 | 60 |
| 2026-09-11 | 64 | 77 | 1.20 | 19 |
| 2026-09-18 | 4k | 4k | 1.04 | 323 |
| 2026-09-25 | 30 | 26 | 0.87 | 7 |
| 2026-10-02 | 98 | 26 | 0.27 | 6 |
| 2026-11-20 | 2k | 2k | 1.00 | 21 |
| 2026-12-18 | 2k | 1k | 0.65 | 27 |
| 2027-01-15 | 4k | 2k | 0.53 | 63 |
| 2027-02-19 | 73 | 104 | 1.42 | 3 |
| 2027-03-19 | 3k | 1k | 0.52 | 249 |
| 2027-06-17 | 98 | 158 | 1.61 | 21 |
| 2028-01-21 | 1k | 744 | 0.71 | 196 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.