Delayed CBOE data, snapshot 2026-08-19. Spot $310.22.
Put/Call (OI)
0.71
2.0M P / 2.9M C
Put/Call (Volume)
0.42
319k P / 765k C today
30d ATM IV
24%
annualized implied move
Call wall
$350
173k contracts
Put wall
$300
135k contracts
Tail hedging
1.3×
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 |
|---|---|---|---|---|
| 2026-08-19 | 35k | 20k | 0.56 | 544k |
| 2026-08-21 | 426k | 315k | 0.74 | 276k |
| 2026-08-24 | 7k | 4k | 0.58 | 17k |
| 2026-08-26 | 2k | 834 | 0.38 | 5k |
| 2026-08-28 | 66k | 29k | 0.44 | 53k |
| 2026-08-31 | 475 | 610 | 1.28 | 4k |
| 2026-09-02 | 0 | 0 | — | 798 |
| 2026-09-04 | 39k | 14k | 0.36 | 18k |
| 2026-09-11 | 27k | 10k | 0.37 | 13k |
| 2026-09-18 | 390k | 293k | 0.75 | 60k |
| 2026-09-25 | 8k | 5k | 0.62 | 5k |
| 2026-10-02 | 2k | 1k | 0.64 | 2k |
| 2026-10-16 | 276k | 148k | 0.53 | 27k |
| 2026-11-20 | 173k | 107k | 0.62 | 16k |
| 2026-12-18 | 298k | 247k | 0.83 | 11k |
| 2027-01-15 | 535k | 422k | 0.79 | 16k |
| 2027-02-19 | 39k | 28k | 0.71 | 4k |
| 2027-03-19 | 69k | 52k | 0.75 | 2k |
| 2027-06-17 | 144k | 117k | 0.81 | 4k |
| 2027-09-17 | 36k | 17k | 0.47 | 2k |
| 2027-12-17 | 98k | 83k | 0.84 | 707 |
| 2028-01-21 | 105k | 74k | 0.70 | 1k |
| 2028-03-17 | 26k | 15k | 0.59 | 281 |
| 2028-12-15 | 77k | 41k | 0.53 | 1k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.