Delayed CBOE data, snapshot 2026-08-18. Spot $28.51.
Put/Call (OI)
0.68
409k P / 601k C
Put/Call (Volume)
0.47
12k P / 25k C today
30d ATM IV
31%
annualized implied move
Call wall
$40
59k contracts
Put wall
$25
99k contracts
Tail hedging
0.5×
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 | 66k | 35k | 0.53 | 9k |
| 2026-08-28 | 5k | 7k | 1.42 | 2k |
| 2026-09-04 | 2k | 3k | 1.96 | 575 |
| 2026-09-11 | 1k | 1k | 0.87 | 1k |
| 2026-09-18 | 180k | 114k | 0.64 | 8k |
| 2026-09-25 | 475 | 1k | 2.79 | 115 |
| 2026-10-02 | 869 | 710 | 0.82 | 421 |
| 2026-10-16 | 16k | 27k | 1.75 | 4k |
| 2026-12-18 | 77k | 58k | 0.75 | 2k |
| 2027-01-15 | 168k | 82k | 0.49 | 2k |
| 2027-03-19 | 11k | 13k | 1.23 | 332 |
| 2027-06-17 | 22k | 24k | 1.09 | 622 |
| 2027-12-17 | 12k | 16k | 1.32 | 633 |
| 2028-01-21 | 39k | 26k | 0.66 | 6k |
| 2028-12-15 | 3k | 1k | 0.34 | 146 |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.