Delayed CBOE data, snapshot 2026-08-18. Spot $444.19.
Put/Call (OI)
0.56
74k P / 133k C
Put/Call (Volume)
2.69
5k P / 2k C today
30d ATM IV
78%
annualized implied move
Call wall
$610
6k contracts
Put wall
$200
4k contracts
Tail hedging
1.5×
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 | 22k | 16k | 0.73 | 2k |
| 2026-08-28 | 3k | 3k | 1.30 | 1k |
| 2026-09-04 | 4k | 3k | 0.75 | 972 |
| 2026-09-11 | 907 | 2k | 1.96 | 899 |
| 2026-09-18 | 17k | 12k | 0.73 | 904 |
| 2026-09-25 | 571 | 1k | 1.96 | 364 |
| 2026-10-02 | 67 | 271 | 4.04 | 325 |
| 2026-11-20 | 6k | 3k | 0.49 | 217 |
| 2026-12-18 | 10k | 9k | 0.88 | 412 |
| 2027-01-15 | 14k | 11k | 0.80 | 84 |
| 2027-02-19 | 450 | 436 | 0.97 | 29 |
| 2027-03-19 | 5k | 2k | 0.46 | 17 |
| 2027-04-16 | 570 | 117 | 0.21 | 7 |
| 2027-05-21 | 387 | 79 | 0.20 | 2 |
| 2027-06-17 | 6k | 2k | 0.26 | 23 |
| 2027-12-17 | 4k | 2k | 0.51 | 11 |
| 2028-01-21 | 9k | 3k | 0.31 | 54 |
| 2028-03-17 | 12k | 382 | 0.03 | 21 |
| 2028-06-16 | 11k | 2k | 0.14 | 3 |
| 2028-12-15 | 8k | 2k | 0.31 | 1 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.