# Oak Brook Advisors, LLC

> Oak Brook Advisors, LLC is a state-registered investment advisory firm in Lakewood Ranch, FL, registered since 1988, reporting under $25 million in regulatory assets under management in its Form ADV filing dated March 26, 2026.

- CRD: 118151
- Filed as: OAK BROOK ADVISORS, LLC
- Registration: State-registered investment adviser (status as filed: APPROVED)
- Location: Lakewood Ranch, FL
- Filing period: October 2026
- Form ADV filing dated: March 26, 2026
- Public record (IAPD): https://adviserinfo.sec.gov/firm/summary/118151
- AdvisorCensus page: https://advisorcensus.com/firm/oak-brook-advisors-llc-lakewood-ranch-fl-118151

## Quick answers

**How is Oak Brook Advisors, LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Oak Brook Advisors, LLC reports these compensation arrangements: a percentage of assets under its management; hourly charges. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Oak Brook Advisors, LLC located?**
Oak Brook Advisors, LLC's principal office is in Lakewood Ranch, FL, according to its Form ADV.

**Is Oak Brook Advisors, LLC registered with the SEC or a state?**
Oak Brook Advisors, LLC is a state-registered investment advisory firm, registered since 1988. Status as filed: APPROVED. CRD 118151.

**How much does Oak Brook Advisors, LLC manage?**
Oak Brook Advisors, LLC reports $17,000,000 in regulatory assets under management in its Form ADV filing dated March 26, 2026 (0% discretionary).

**What types of clients does Oak Brook Advisors, LLC serve?**
By number of clients on Form ADV Item 5.D: individuals (other than high net worth individuals) (31); high net worth individuals (6).

**Does Oak Brook Advisors, LLC report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's public record on IAPD: https://adviserinfo.sec.gov/firm/summary/118151

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Hourly charges

### Regulatory assets under management (Item 5.F)
- Total: $17,000,000
- Discretionary: $0
- Non-discretionary: $17,000,000

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Individuals (other than high net worth individuals) | 31 | $5,000,000 |
| High net worth individuals | 6 | $12,000,000 |

### Advisory services (Item 5.G)
- Financial planning services
- Portfolio management for individuals and/or small businesses
- Selection of other advisers (including private fund managers)

### Firm details
- Registered since: 1988 (38 years)
- Employees: 2 total, 1 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: FL, IL, NC
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- oakbrookfinancial.com
- Facebook @OakBrookFinancial

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Oak Brook Advisors, LLC (CRD 118151): Form ADV filing data as of October 2026.