Delayed CBOE data, snapshot 2026-08-18. Spot $311.54.
Put/Call (OI)
0.74
150k P / 202k C
Put/Call (Volume)
0.81
18k P / 22k C today
30d ATM IV
52%
annualized implied move
Call wall
$600
12k contracts
Put wall
$300
13k contracts
Tail hedging
0.4×
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 | 39k | 22k | 0.56 | 18k |
| 2026-08-28 | 7k | 5k | 0.72 | 5k |
| 2026-09-04 | 4k | 4k | 0.95 | 2k |
| 2026-09-11 | 3k | 3k | 0.92 | 874 |
| 2026-09-18 | 37k | 17k | 0.46 | 4k |
| 2026-09-25 | 2k | 2k | 0.91 | 496 |
| 2026-10-02 | 141 | 219 | 1.55 | 485 |
| 2026-10-16 | 4k | 4k | 0.91 | 2k |
| 2026-11-20 | 17k | 11k | 0.64 | 977 |
| 2026-12-18 | 14k | 18k | 1.26 | 888 |
| 2027-01-15 | 29k | 28k | 0.97 | 2k |
| 2027-02-19 | 6k | 6k | 0.96 | 414 |
| 2027-03-19 | 3k | 2k | 0.91 | 687 |
| 2027-06-17 | 16k | 16k | 1.01 | 839 |
| 2028-01-21 | 10k | 7k | 0.72 | 558 |
| 2028-06-16 | 7k | 3k | 0.42 | 365 |
| 2028-12-15 | 5k | 3k | 0.69 | 437 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.