Delayed CBOE data, snapshot 2026-08-18. Spot $1,017.19.
Put/Call (OI)
1.11
1.8M P / 1.6M C
Put/Call (Volume)
0.74
584k P / 792k C today
30d ATM IV
65%
annualized implied move
Call wall
$1,100
42k contracts
Put wall
$600
44k contracts
Tail hedging
2.4×
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 |
|---|---|---|---|---|
| 2026-08-19 | 14k | 10k | 0.68 | 132k |
| 2026-08-21 | 245k | 346k | 1.41 | 223k |
| 2026-08-24 | 5k | 3k | 0.67 | 15k |
| 2026-08-26 | 2k | 1k | 0.61 | 5k |
| 2026-08-28 | 33k | 40k | 1.23 | 41k |
| 2026-08-31 | 0 | 0 | — | 2k |
| 2026-09-04 | 17k | 20k | 1.17 | 15k |
| 2026-09-11 | 12k | 14k | 1.14 | 8k |
| 2026-09-18 | 173k | 248k | 1.44 | 50k |
| 2026-09-25 | 7k | 12k | 1.58 | 10k |
| 2026-10-02 | 611 | 1k | 2.37 | 7k |
| 2026-10-16 | 102k | 136k | 1.33 | 20k |
| 2026-11-20 | 80k | 101k | 1.27 | 10k |
| 2026-12-18 | 136k | 185k | 1.36 | 23k |
| 2027-01-15 | 234k | 223k | 0.95 | 20k |
| 2027-02-19 | 19k | 29k | 1.52 | 4k |
| 2027-03-19 | 69k | 68k | 1.00 | 5k |
| 2027-06-17 | 101k | 87k | 0.87 | 7k |
| 2027-09-17 | 41k | 21k | 0.50 | 5k |
| 2027-12-17 | 73k | 44k | 0.61 | 7k |
| 2028-01-21 | 84k | 62k | 0.73 | 4k |
| 2028-06-16 | 24k | 27k | 1.13 | 1k |
| 2028-12-15 | 77k | 66k | 0.85 | 10k |
Source: CBOE delayed quotes, refreshed daily after US market close. Open interest is exchange-reported and lags one session. Research, not investment advice.