Delayed CBOE data, snapshot 2026-08-18. Spot $442.52.
Put/Call (OI)
1.06
48k P / 45k C
Put/Call (Volume)
0.93
6k P / 6k C today
30d ATM IV
72%
annualized implied move
Call wall
$510
4k contracts
Put wall
$300
3k contracts
Tail hedging
3.5×
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 | 19k | 14k | 0.76 | 8k |
| 2026-08-28 | 1k | 1k | 1.06 | 528 |
| 2026-09-04 | 809 | 1k | 1.38 | 697 |
| 2026-09-11 | 215 | 590 | 2.74 | 225 |
| 2026-09-18 | 3k | 6k | 1.79 | 1k |
| 2026-09-25 | 112 | 824 | 7.36 | 118 |
| 2026-10-02 | 12 | 16 | 1.33 | 50 |
| 2026-10-16 | 3k | 7k | 2.16 | 369 |
| 2026-11-20 | 4k | 4k | 0.98 | 183 |
| 2027-01-15 | 8k | 9k | 1.15 | 530 |
| 2027-12-17 | 3k | 2k | 0.59 | 129 |
| 2028-01-21 | 3k | 2k | 0.88 | 334 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.