AdvisorCensus / Financial advisors / Illinois / Chicago / Main Street Investment Advisors, LLC
Main Street Investment Advisors, LLC
Filed as MAIN STREET INVESTMENT ADVISORS, LLC
Main Street Investment Advisors, LLC is an SEC-registered investment advisory firm in Northbrook, IL, registered since 2018, reporting $100 million to $500 million in regulatory assets under management in its Form ADV filing dated January 20, 2026.
Quick answers
From the filingHow is Main Street Investment Advisors, LLC compensated?
On its Form ADV (Item 5.E, October 2026), Main Street Investment Advisors, LLC reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees).
Where is Main Street Investment Advisors, LLC located?
Main Street Investment Advisors, LLC's principal office is in Northbrook, IL, according to its Form ADV.
Is Main Street Investment Advisors, LLC registered with the SEC or a state?
Main Street Investment Advisors, LLC is an SEC-registered investment advisory firm, registered since 2018. Status as filed: Approved. CRD 146036.
How much does Main Street Investment Advisors, LLC manage?
Main Street Investment Advisors, LLC reports $250,312,643 in regulatory assets under management in its Form ADV filing dated January 20, 2026 (100% discretionary).
How have Main Street Investment Advisors, LLC's assets and staff changed since 2021?
In the Form ADV data for Main Street Investment Advisors, LLC: Regulatory assets under management: $160,000,000 in the October 2021 data and $250,312,643 in the October 2026 data, up 56%. Total employees: 3 in October 2021 and 3 in October 2026. Assets under management move with markets as well as with clients coming and going.
What types of clients does Main Street Investment Advisors, LLC serve?
By number of clients on Form ADV Item 5.D: high net worth individuals (128); individuals (other than high net worth individuals) (14); charitable organizations (2).
Which custodians does Main Street Investment Advisors, LLC use?
Main Street Investment Advisors, LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Fidelity Brokerage Services LLC as a custodian holding 10% or more of its separately managed account assets.
Does Main Street Investment 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 SEC record: https://adviserinfo.sec.gov/firm/summary/146036
Does Main Street Investment Advisors, LLC state an account minimum?
Its Form ADV Part 2A brochure dated January 20, 2026 says: "We have a minimum asset amount for opening an account of $250,000." "In the past we opened accounts for less than the minimum if such accounts have the potential to grow quickly to the minimum level when aggregated, exceed the minimum asset requirement or there is a relationship to a current client that matches or exceeds the minimum."
What changed in Main Street Investment Advisors, LLC's recent Form ADV filings?
In the February 2026 filing data: Regulatory assets under management went from $214,653,300 to $250,312,643 (+17%). Updated its list of owners and control persons (Schedule A).
From the Form ADV filing
Every figure below is as the firm filed it with regulators, as of October 2026.
How the firm is compensated
Item 5.E- A percentage of assets under your management
- Fixed fees (other than subscription fees)
Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ
Fees and minimums
Form ADV Part 2AAccount minimum: $250,000
The brochure's wording
We have a minimum asset amount for opening an account of $250,000.
In the past we opened accounts for less than the minimum if such accounts have the potential to grow quickly to the minimum level when aggregated, exceed the minimum asset requirement or there is a relationship to a current client that matches or exceeds the minimum.
As stated in the firm's Form ADV Part 2A brochure dated January 20, 2026. Fees can differ by service and may be negotiable; the brochure is the complete statement. Read the brochure on the SEC's IAPD site
Regulatory assets under management
Item 5.F$250,312,643 as of October 2026, filing dated January 20, 2026.
A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means
Who the firm serves
Item 5.DA firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.
Advisory services
Item 5.G- Financial planning services
- Portfolio management for individuals and/or small businesses
- Selection of other advisers (including private fund managers)
Registration and firm details
Items 1, 2, 5- Registration
- SEC-registered investment adviser. Status as filed: Approved.
- Registered since
- 2018 (8 years)
- Employees
- Total: 3. Performing investment advisory functions: 3.
- Wrap fee program participation
- No.
- Custodians (Schedule D, Section 5.K(3))
-
Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.
- States registered or notice-filed
-
6 states or jurisdictions
SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration
Disclosures
Item 11None Reports no disclosure items on Form ADV Item 11. View on IAPD.
Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures
Assets and staff over time
Items 5.A, 5.F| Data period | Assets under management | Employees | Filing dated |
|---|---|---|---|
| October 2026 | $250,312,643 | 3 | January 20, 2026 |
| October 2025 | $214,653,300 | 3 | February 12, 2025 |
| October 2024 | $175,000,000 | 3 | July 1, 2024 |
| October 2023 | $160,000,000 | 3 | March 24, 2023 |
| October 2022 | $180,000,000 | 3 | March 31, 2022 |
| October 2021 | $160,000,000 | 3 | March 29, 2021 |
Regulatory assets under management: $160,000,000 in the October 2021 data and $250,312,643 in the October 2026 data, up 56%.
Total employees: 3 in October 2021 and 3 in October 2026.
As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.
Changes in the filing
Last 12 months- February 2026
- Regulatory assets under management went from $214,653,300 to $250,312,643 (+17%).
- Updated its list of owners and control persons (Schedule A).
Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.
Websites listed on Form ADV
Item 1.ISource: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."
Cite this page
AdvisorCensus. Main Street Investment Advisors, LLC (CRD 146036): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/main-street-investment-advisors-llc-northbrook-il-146036