Delayed CBOE data, snapshot 2026-08-18. Spot $206.29.
Put/Call (OI)
0.72
32k P / 44k C
Put/Call (Volume)
1.50
869 P / 581 C today
30d ATM IV
32%
annualized implied move
Call wall
$220
10k contracts
Put wall
$180
4k contracts
Tail hedging
1.7×
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 | 5k | 6k | 1.20 | 780 |
| 2026-09-18 | 10k | 10k | 0.99 | 348 |
| 2026-12-18 | 5k | 3k | 0.61 | 96 |
| 2027-01-15 | 15k | 8k | 0.51 | 195 |
| 2027-03-19 | 2k | 281 | 0.12 | 1 |
| 2027-06-17 | 3k | 2k | 0.60 | 19 |
| 2027-08-20 | 55 | 0 | 0.00 | 0 |
| 2027-11-19 | 97 | 23 | 0.24 | 8 |
| 2028-01-21 | 4k | 3k | 0.88 | 3 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.