Delayed CBOE data, snapshot 2026-08-18. Spot $39.18.
Put/Call (OI)
0.36
41k P / 113k C
Put/Call (Volume)
0.01
124 P / 9k C today
30d ATM IV
61%
annualized implied move
Call wall
$50
23k contracts
Put wall
$30
14k contracts
Tail hedging
0.6×
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.
| Expiry | Call OI | Put OI | P/C | Volume today |
|---|---|---|---|---|
| 2026-08-21 | 18k | 10k | 0.55 | 33 |
| 2026-09-18 | 40k | 16k | 0.39 | 9k |
| 2026-12-18 | 20k | 7k | 0.38 | 61 |
| 2027-01-15 | 34k | 8k | 0.23 | 199 |
| 2027-03-19 | 1k | 310 | 0.31 | 28 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.