As of previous close (2026-09-18) · OPRA historical data
Spot $191.12 at that close. Nothing on this page comes from the session in progress.
Put/Call (OI)
0.59
17k P / 29k C
Put/Call (Volume)
0.32
95 P / 300 C that session
30d ATM IV
59%
annualized implied move
Call wall
$220
3k contracts
Put wall
$150
2k contracts
Tail hedging
0.4×
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 2026-10-16. 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 that session |
|---|---|---|---|---|
| 2026-09-25 | 464 | 412 | 0.89 | 122 |
| 2026-10-02 | 850 | 547 | 0.64 | 6 |
| 2026-10-09 | 173 | 62 | 0.36 | 8 |
| 2026-10-16 | 3k | 979 | 0.35 | 21 |
| 2026-10-23 | 76 | 390 | 5.13 | 0 |
| 2026-10-30 | 291 | 16 | 0.05 | 0 |
| 2026-11-20 | 3k | 1k | 0.39 | 22 |
| 2026-12-18 | 2k | 1k | 0.52 | 11 |
| 2027-01-15 | 6k | 4k | 0.79 | 6 |
| 2027-02-19 | 152 | 141 | 0.93 | 8 |
| 2027-03-19 | 3k | 2k | 0.86 | 0 |
| 2027-05-21 | 0 | 0 | — | 0 |
| 2027-06-17 | 2k | 929 | 0.57 | 5 |
| 2028-01-21 | 4k | 748 | 0.21 | 0 |
| 2029-01-19 | 8 | 5 | 0.63 | 1 |
Source: Cboe end-of-session option chains, summarized after each US market close and published from the following trading day — OPRA historical data. Under the OPRA plan options data becomes historical, and freely publishable, at the opening of the next trading session; data from the session in progress is never displayed or served here. Open interest is exchange-reported once a day. Research, not investment advice.