Delayed CBOE data, snapshot 2026-08-19. Spot $272.
Put/Call (OI)
0.82
120k P / 146k C
Put/Call (Volume)
1.18
10k P / 8k C today
30d ATM IV
40%
annualized implied move
Call wall
$300
12k contracts
Put wall
$220
14k contracts
Tail hedging
0.7×
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 | 36k | 22k | 0.62 | 7k |
| 2026-08-28 | 3k | 4k | 1.76 | 2k |
| 2026-09-04 | 1k | 4k | 3.13 | 706 |
| 2026-09-11 | 462 | 869 | 1.88 | 321 |
| 2026-09-18 | 25k | 30k | 1.18 | 3k |
| 2026-09-25 | 122 | 307 | 2.52 | 386 |
| 2026-10-02 | 16 | 5 | 0.31 | 264 |
| 2026-10-16 | 11k | 9k | 0.81 | 1k |
| 2026-11-20 | 6k | 4k | 0.65 | 353 |
| 2026-12-18 | 11k | 11k | 0.93 | 1k |
| 2027-01-15 | 32k | 18k | 0.57 | 744 |
| 2027-02-19 | 32 | 62 | 1.94 | 101 |
| 2027-03-19 | 6k | 5k | 0.77 | 181 |
| 2027-06-17 | 6k | 6k | 1.05 | 305 |
| 2028-01-21 | 8k | 5k | 0.63 | 243 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.