Delayed CBOE data, snapshot 2026-08-17. Spot $171.75.
Put/Call (OI)
1.00
1.8M P / 1.8M C
Put/Call (Volume)
0.66
134k P / 203k C today
30d ATM IV
45%
annualized implied move
Call wall
$200
125k contracts
Put wall
$100
125k contracts
Tail hedging
2.4×
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 | 294k | 254k | 0.86 | 211k |
| 2026-08-28 | 53k | 48k | 0.90 | 28k |
| 2026-09-04 | 30k | 29k | 0.95 | 16k |
| 2026-09-11 | 16k | 12k | 0.74 | 4k |
| 2026-09-18 | 235k | 193k | 0.82 | 23k |
| 2026-09-25 | 6k | 4k | 0.69 | 2k |
| 2026-10-02 | 393 | 365 | 0.93 | 763 |
| 2026-10-16 | 87k | 100k | 1.15 | 8k |
| 2026-11-20 | 89k | 97k | 1.09 | 5k |
| 2026-12-18 | 190k | 209k | 1.10 | 7k |
| 2027-01-15 | 293k | 344k | 1.17 | 7k |
| 2027-02-19 | 20k | 16k | 0.83 | 1k |
| 2027-03-19 | 70k | 81k | 1.16 | 6k |
| 2027-06-17 | 149k | 148k | 1.00 | 4k |
| 2027-09-17 | 14k | 19k | 1.38 | 643 |
| 2027-12-17 | 109k | 112k | 1.03 | 8k |
| 2028-01-21 | 98k | 78k | 0.80 | 938 |
| 2028-12-15 | 80k | 89k | 1.11 | 2k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.