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Mariner Investment Group, LLC

New York, NYSEC-registered investment adviserCRD 124744

Filed as MARINER INVESTMENT GROUP, LLC

Mariner Investment Group, LLC is an SEC-registered investment advisory firm in New York, NY, registered since 2003, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated August 28, 2026.

23 years
registered since 2003
$176,308,128,651
assets under management
2 arrangements
Percentage of assets, Performance-based
None
disclosure items (Item 11)

Quick answers

From the filing

How is Mariner Investment Group, LLC compensated?

On its Form ADV (Item 5.E, October 2026), Mariner Investment Group, LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees.

Where is Mariner Investment Group, LLC located?

Mariner Investment Group, LLC's principal office is in New York, NY, according to its Form ADV; the September 2026 filing also lists 5 other offices (Schedule D, Section 1.F).

Is Mariner Investment Group, LLC registered with the SEC or a state?

Mariner Investment Group, LLC is an SEC-registered investment advisory firm, registered since 2003. Status as filed: Approved. CRD 124744.

How much does Mariner Investment Group, LLC manage?

Mariner Investment Group, LLC reports $176,308,128,651 in regulatory assets under management in its Form ADV filing dated August 28, 2026 (100% discretionary).

How have Mariner Investment Group, LLC's assets and staff changed since 2021?

In the Form ADV data for Mariner Investment Group, LLC: Regulatory assets under management: $188,025,970,411 in the October 2021 data and $176,308,128,651 in the October 2026 data, down 6%. Total employees: 109 in October 2021 and 176 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does Mariner Investment Group, LLC serve?

By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (34); investment companies (2).

Which custodians does Mariner Investment Group, LLC use?

Mariner Investment Group, LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists J.P. Morgan Securities LLC and SG Americas Securities, LLC as custodians holding 10% or more of its separately managed account assets.

Does Mariner Investment Group, 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/124744

What changed in Mariner Investment Group, LLC's recent Form ADV filings?

In the September 2026 filing data: Employees performing advisory functions went from 91 to 89. Regulatory assets under management went from $149,623,092,189 to $176,308,128,651 (+18%). Added an office in Purchase, NY. No longer lists an office in Harrison, NY.

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
  • Performance-based 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 2A

See the firm's brochure (dated August 28, 2026) for its fees and any account minimum, on the SEC's IAPD site.

Regulatory assets under management

Item 5.F
$176,308,128,651

$176,308,128,651 as of October 2026, filing dated August 28, 2026.

Discretionary: $176,308,128,651.Non-discretionary: $0.

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.D
Investment companies
Clients 2 Assets $4,396,190,611 (2%)
Pooled investment vehicles (other than investment companies and business development companies)
Clients 34 Assets $127,217,602,356 (72%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients Fewer than 5 Assets $2,782,251,124 (2%)
Sovereign wealth funds and foreign official institutions
Clients Fewer than 5 Assets $41,912,084,560 (24%)

A 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 investment companies (and business development companies)
  • Portfolio management for pooled investment vehicles (other than investment companies)
  • Portfolio management for businesses (other than small businesses) or institutional clients

Registration and firm details

Items 1, 2, 5
Also doing business as
"BRIGHT MEADOW" INCLUDING BRIGHT MEADOW CAPITAL AGENCY, LLC, "BRIGHT MEADOW" INCLUDING BRIGHT MEADOW CAPITAL, LLC, "CICERO" INCLUDING MARINER CICERO GP, LLC, "CONCORDIA" AND "CONCORDIA G10" INCLUDING CONCORDIA G10 STRATEGIES GP LLC, "CONCORDIA" AND "CONCORDIA MUNI" INCLUDING CONCORDIA MUNICIPAL STRATEGIES GP LLC, "GLEN OAKS" INCLUDING MARINER GLEN OAKS GP, LLC, BOWPORT, MARINER FRONTIER GP, LLC, MARINER GP, LLC, OXUS, PECONIC BAY, SILVERMINE
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2003 (23 years)
Employees
Total: 176. Performing investment advisory functions: 89.
Wrap fee program participation
No.
Custodians (Schedule D, Section 5.K(3))
J.P. Morgan Securities LLCSG Americas Securities, LLC

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.

Other offices (Schedule D, Section 1.F)
5 other offices, as of the September 2026 filing
Columbia, MDLondonPurchase, NYRowayton, CTSummit, NJ
States registered or notice-filed
4 states or jurisdictions
CTMDNJNY

SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None 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
$188B 2021 $219B 2022 $180B 2023 $126B 2024 $120B 2025 $176B 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$176,308,128,651176August 28, 2026
October 2025$119,844,184,594134March 7, 2025
October 2024$126,022,034,338126March 28, 2024
October 2023$180,493,766,178117July 3, 2023
October 2022$219,371,099,362114August 25, 2022
October 2021$188,025,970,411109April 16, 2021

Regulatory assets under management: $188,025,970,411 in the October 2021 data and $176,308,128,651 in the October 2026 data, down 6%.

Total employees: 109 in October 2021 and 176 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
  1. September 2026
    • Employees performing advisory functions went from 91 to 89.
    • Regulatory assets under management went from $149,623,092,189 to $176,308,128,651 (+18%).
    • Added an office in Purchase, NY.
    • No longer lists an office in Harrison, NY.
  2. April 2026
    • No longer lists the business name Galton Capital Group IV, LLC.
    • Employees performing advisory functions went from 74 to 91.
    • Regulatory assets under management went from $119,844,184,594 to $149,623,092,189 (+25%).
    • Changed its office addresses in Summit, NJ.
    • Added an office in Harrison, NY.
    • Added an office in London.
    • No longer lists an office in New York, NY.
    • Updated its list of owners and control persons (Schedule A).
  3. January 2026
    • No longer registered or notice-filed in NC.

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.I
brightmeadowcapital.commarinerinvestment.com

Source: 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 Investment Group, LLC (CRD 124744): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/mariner-investment-group-llc-new-york-ny-124744