Delayed CBOE data, snapshot 2026-08-18. Spot $48.16.
Put/Call (OI)
0.77
501k P / 649k C
Put/Call (Volume)
0.74
13k P / 18k C today
30d ATM IV
23%
annualized implied move
Call wall
$50
110k contracts
Put wall
$40
70k contracts
Tail hedging
2.8×
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 | 89k | 74k | 0.83 | 8k |
| 2026-08-28 | 18k | 8k | 0.43 | 2k |
| 2026-09-04 | 10k | 3k | 0.32 | 1k |
| 2026-09-11 | 2k | 4k | 1.74 | 465 |
| 2026-09-18 | 163k | 133k | 0.82 | 9k |
| 2026-09-25 | 676 | 320 | 0.47 | 445 |
| 2026-10-02 | 86 | 112 | 1.30 | 188 |
| 2026-10-16 | 40k | 40k | 1.00 | 1k |
| 2026-12-18 | 71k | 50k | 0.70 | 3k |
| 2027-01-15 | 137k | 92k | 0.67 | 2k |
| 2027-03-19 | 13k | 12k | 0.94 | 416 |
| 2027-06-17 | 37k | 34k | 0.91 | 1k |
| 2027-12-17 | 15k | 11k | 0.76 | 307 |
| 2028-01-21 | 49k | 38k | 0.78 | 1k |
| 2028-12-15 | 4k | 1k | 0.39 | 75 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.