AdvisorCensus / Financial advisors / Florida / Orlando / Mariner Institutional, LLC
Mariner Institutional, LLC is an SEC-registered investment advisory firm in Winter Park, FL, registered since 2001, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated August 5, 2026.
Quick answers
From the filingHow is Mariner Institutional, LLC compensated?
On its Form ADV (Item 5.E, October 2026), Mariner Institutional, LLC reports these compensation arrangements: a percentage of assets under its management; hourly charges; fixed fees (other than subscription fees).
Where is Mariner Institutional, LLC located?
Mariner Institutional, LLC's principal office is in Winter Park, FL, according to its Form ADV; the September 2026 filing also lists 15 other offices (Schedule D, Section 1.F).
Is Mariner Institutional, LLC registered with the SEC or a state?
Mariner Institutional, LLC is an SEC-registered investment advisory firm, registered since 2001. Status as filed: Approved. CRD 111964.
How much does Mariner Institutional, LLC manage?
Mariner Institutional, LLC reports $2,822,300,000 in regulatory assets under management in its Form ADV filing dated August 5, 2026 (100% discretionary).
How have Mariner Institutional, LLC's assets and staff changed since 2021?
In the Form ADV data for Mariner Institutional, LLC: Regulatory assets under management: $296,600,000 in the October 2021 data and $2,822,300,000 in the October 2026 data, up 852%. Total employees: 90 in October 2021 and 148 in October 2026. Assets under management move with markets as well as with clients coming and going.
What types of clients does Mariner Institutional, LLC serve?
By number of clients on Form ADV Item 5.D: charitable organizations (19); pension and profit sharing plans (but not the plan participants or government pension plans) (14); corporations or other businesses not listed above (10).
Does Mariner Institutional, 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/111964
Does Mariner Institutional, LLC state an account minimum?
Its Form ADV Part 2A brochure dated June 26, 2026 says: "We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee." "As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services."
What changed in Mariner Institutional, LLC's recent Form ADV filings?
In the September 2026 filing data: 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
- Hourly charges
- 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: None
The brochure's wording
We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee.
As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services.
Minimum annual fee: None
The brochure's wording
We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee.
As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services.
As stated in the firm's Form ADV Part 2A brochure dated June 26, 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$2,822,300,000 as of October 2026, filing dated August 5, 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- Portfolio management for individuals and/or small businesses
- Pension consulting services
- Selection of other advisers (including private fund managers)
- Other
Registration and firm details
Items 1, 2, 5- Also doing business as
- ANDCO CONSULTING, LLC, MARINER
- Registration
- SEC-registered investment adviser. Status as filed: Approved.
- Registered since
- 2001 (25 years)
- Employees
- Total: 148. Performing investment advisory functions: 148.
- Wrap fee program participation
- No.
- Other offices (Schedule D, Section 1.F)
-
15 other offices, as of the September 2026 filing
- States registered or notice-filed
-
19 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 | $2,822,300,000 | 148 | August 5, 2026 |
| October 2025 | $2,543,100,000 | 113 | March 28, 2025 |
| October 2024 | $976,600,000 | 90 | May 17, 2024 |
| October 2023 | $718,800,000 | 98 | March 28, 2023 |
| October 2022 | $526,200,000 | 87 | March 29, 2022 |
| October 2021 | $296,600,000 | 90 | March 29, 2021 |
Regulatory assets under management: $296,600,000 in the October 2021 data and $2,822,300,000 in the October 2026 data, up 852%.
Total employees: 90 in October 2021 and 148 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- September 2026
- Updated its list of owners and control persons (Schedule A).
- April 2026
- Employees performing advisory functions went from 113 to 148.
- Regulatory assets under management went from $2,543,100,000 to $2,822,300,000 (+11%).
- Changed its office addresses in Plano, TX.
- Added an office in Chicago, IL.
- Added an office in Clayton, MO.
- Added an office in Greenville, SC.
- Added an office in Newport Beach, CA.
- Added an office in Omaha, NE.
- Added an office in Rockland, MA.
- Added an office in Tulsa, OK.
- Added an office in West Chester, OH.
- Updated its list of owners and control persons (Schedule A).
- February 2026
- Registered or notice-filed in MA.
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. Mariner Institutional, LLC (CRD 111964): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/mariner-institutional-llc-winter-park-fl-111964