Delayed CBOE data, snapshot 2026-08-18. Spot $52.55.
Put/Call (OI)
0.79
65k P / 82k C
Put/Call (Volume)
1.08
10k P / 9k C today
30d ATM IV
21%
annualized implied move
Call wall
$55
24k contracts
Put wall
$45
17k contracts
Tail hedging
3.0×
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 | 9k | 9k | 0.98 | 594 |
| 2026-09-18 | 22k | 22k | 0.97 | 1k |
| 2026-10-16 | 5k | 1k | 0.26 | 16k |
| 2026-11-20 | 4k | 1k | 0.31 | 97 |
| 2026-12-18 | 9k | 3k | 0.36 | 129 |
| 2027-01-15 | 21k | 17k | 0.80 | 53 |
| 2027-03-19 | 4k | 4k | 1.07 | 28 |
| 2027-06-17 | 4k | 5k | 1.27 | 75 |
| 2028-01-21 | 2k | 2k | 0.89 | 26 |
| 2028-12-15 | 2k | 580 | 0.37 | 6 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.