Delayed CBOE data, snapshot 2026-08-18. Spot $203.4.
Put/Call (OI)
0.56
20k P / 36k C
Put/Call (Volume)
1.76
2k P / 859 C today
30d ATM IV
63%
annualized implied move
Call wall
$220
7k contracts
Put wall
$95
3k contracts
Tail hedging
4.1×
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 | 8k | 4k | 0.50 | 1k |
| 2026-09-18 | 18k | 7k | 0.42 | 680 |
| 2026-10-16 | 1k | 1k | 0.92 | 135 |
| 2026-11-20 | 80 | 32 | 0.40 | 102 |
| 2026-12-18 | 2k | 2k | 0.80 | 30 |
| 2027-01-15 | 4k | 5k | 1.26 | 17 |
| 2027-03-19 | 655 | 471 | 0.72 | 0 |
| 2027-06-17 | 209 | 21 | 0.10 | 12 |
| 2028-01-21 | 2k | 304 | 0.19 | 23 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.