Delayed CBOE data, snapshot 2026-08-18. Spot $213.45.
Put/Call (OI)
0.56
25k P / 44k C
Put/Call (Volume)
0.26
2k P / 7k C today
30d ATM IV
59%
annualized implied move
Call wall
$220
3k contracts
Put wall
$140
5k contracts
Tail hedging
9.6×
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 | 4k | 8k | 1.97 | 742 |
| 2026-09-18 | 20k | 6k | 0.28 | 3k |
| 2026-10-16 | 1k | 350 | 0.29 | 2k |
| 2026-12-18 | 3k | 5k | 1.90 | 388 |
| 2027-01-15 | 10k | 3k | 0.31 | 1k |
| 2027-03-19 | 305 | 308 | 1.01 | 9 |
| 2027-05-21 | 132 | 6 | 0.05 | 35 |
| 2027-08-20 | 23 | 2 | 0.09 | 15 |
| 2027-11-19 | 52 | 5 | 0.10 | 9 |
| 2028-01-21 | 5k | 3k | 0.50 | 2k |
| 2028-12-15 | 276 | 5 | 0.02 | 17 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.