What Mariner Investment Group does

Mariner Investment Group, LLC is a private, employee-owned alternative investment management firm founded in 1992 and headquartered at 299 Park Avenue, New York. The firm operates a multi-strategy platform focused on fixed-income relative value and credit strategies, allocating capital across more than 25 specialized portfolio management teams that pursue uncorrelated alpha sources in public and private markets. Core product offerings include Multi-Strategy, Relative Value, and Securitized mandates, with notable sub-brand franchises including Bright Meadow (approximately $4.0bn in mortgage and consumer securitized credit, established 2008) and Cicero (seasoned CMBS, onboarded March 2023). Platform-level differentiators include institutional risk management infrastructure and decades of credit-cycle experience spanning the GFC, COVID, and recent interest-rate regimes.

The firm serves institutional investors (pension funds, endowments, foundations, sovereign wealth funds), family offices, and qualified investors globally through eight offices in the United States, the United Kingdom, and Japan. Distribution is conducted via direct institutional sales and separately managed accounts, supplemented by thought-leadership content. Revenue is generated through asset-based management fees on approximately $10.1bn AUM, performance-based incentive allocations, and affiliated advisory services, with terms negotiated bilaterally rather than publicly disclosed.

Mariner became 100% employee-owned in July 2020 following a management buyout led by Chairman and CEO Curtis Arledge and Founder William Michaelcheck from ORIX Corporation USA. The current leadership team includes executives with prior roles at BlackRock, BNY Mellon, Brevan Howard, and Greenwich Capital Markets. The firm is a UN PRI signatory since 2013 and emphasizes risk-adjusted returns and team-based entrepreneurship within an institutional compliance and operating framework.

Name

Mariner Investment Group

Legal name

Mariner Investment Group, LLC

Website

https://marinerinvestment.com

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

101–250 employees

Short description

Mariner Investment Group is an employee-owned alternative investment manager founded in 1992, operating a multi-strategy fixed-income relative value and credit platform with $10.1bn AUM across 25+ specialized teams. It serves institutional investors, family offices, and qualified investors globally through offices in the US, UK, and Japan.

Ownership category

akta.pro rank

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Others

Revenue model

1. Management Fees: Asset-based management fees charged on AUM across the firm's multi-strategy platform, collective investment vehicles, standalone funds, and separately managed accounts.
2. Performance Fees (Incentive Allocation): Performance-based fees typically structured as a percentage of profits above a high-water mark or hurdle rate, common in hedge fund structures.
3. Advisory Services: The firm provides investment advisory services through its affiliated registered investment advisers.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Mariner Investment Group is a private alternative investment management firm that manages fixed income relative value and securitized credit strategies on a multi-strategy platform of 25+ specialized portfolio management teams. Its flagship offering, the Fixed Income Multi-Strategy, tactically allocates capital between uncorrelated alpha-focused teams to generate risk-adjusted returns, with sub-brands Bright Meadow (securitized credit, ~$4.0bn AUM) and Cicero (seasoned CMBS). Products are offered as collective investment vehicles, standalone funds, or separately managed accounts to institutional investors and family offices.

Product overview

Mariner Investment Group is an alternative investment management firm offering a multi-strategy platform with specialized investment strategies. The core offerings include Multi-Strategy, Relative Value, and Securitized investment approaches, with Mariner's Fixed Income Multi-Strategy being a key diversified strategy that allocates capital across uncorrelated alpha-focused portfolio management teams. The platform features specialized sub-brand teams including Bright Meadow (approximately $4.0 billion AUM as of May 2026, focused on securitized credit, mortgage, and consumer products) and Cicero (focused on seasoned CMBS). Products are available in the form of collective investment vehicles, standalone funds, or separately managed accounts.

Differentiator

Problem solved

Functional benefit

Products and services

• Mariner Fixed Income Multi-Strategy A diversified fixed income relative value strategy that tactically allocates capital between uncorrelated, alpha-focused portfolio management teams to generate strong risk-adjusted returns. Offered to institutional investors and qualified investors via collective investment vehicles, standalone funds, or separately managed accounts.
• Bright Meadow Securitized Credit Strategies Specialized securitized credit strategies run by the Bright Meadow team within Mariner, managing approximately $4.0 billion across evergreen hedge fund-style vehicles and bespoke accounts. Focus areas include credit, prepayment, and structuring expertise in mortgage and consumer securitized product markets (MBS, ABS). For institutional investors, family offices, and qualified investors.
• Cicero Seasoned CMBS Strategy Investment strategy managed by the Cicero team within Mariner, specializing in seasoned Commercial Mortgage-Backed Securities (CMBS) bonds with decades of experience navigating credit cycles including the GFC, COVID, and interest rate cycles. Leverages deep relationships in CRE capital markets for sectoral insights and analytical capabilities. Targeted at institutional allocators concerned about transparency and liquidity in private credit.
• Separately Managed Accounts Customized separate account solutions providing qualified investors, family offices, and institutional clients with direct access to Mariner's investment teams and strategies under bespoke mandates.

Quantifiable outcome

• Cicero's seasoned CMBS approach has demonstrated resilience through multiple credit cycles including dotcom, telecom bubbles, GFC, 2010s sectoral recessions in energy and retail, COVID, and interest rate hiking cycle.
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Oaktree Capital Management: Major alternative investment manager with deep credit and structured product capabilities. Comparable institutional credit and securitized product expertise at substantially larger AUM scale; key competitor for institutional fixed income allocator mandates.
• BlackRock: World's largest asset manager with extensive fixed income and alternatives businesses. Comparable as a competitor for institutional fixed income allocator mandates; also a former employer of CEO Arledge and CIO Fisher.
• Man Group: Listed multi-strategy alternatives manager combining discretionary and systematic strategies. Comparable multi-strategy platform serving institutional investors across fixed income, credit, and securitized products, though at materially larger scale.
• Angelo Gordon (TPG Angelo Gordon): Major alternative asset manager with credit and structured product capabilities, now part of TPG. Comparable as a competitor for institutional credit and securitized product mandates following TPG acquisition.
• Western Asset Management: Large, established fixed income manager owned by Franklin Templeton. Comparable as a fixed income specialist serving institutional investors with securitized product capabilities, though operating at substantially greater AUM scale.

Emerging players

• AQR Capital Management: Large alternative investment manager combining fundamental and systematic approaches. Comparable in offering institutional investors multi-strategy alternatives with fixed income and credit capabilities, though emphasizing systematic over discretionary approaches.

Direct peers

• PineBridge Investments: Global multi-asset manager with significant fixed income and credit capabilities. Comparable in offering institutional investors multi-strategy alternatives with securitized product expertise and global distribution across US, Europe, and Asia.
• Brevan Howard: Multi-strategy macro and fixed income relative value manager. Directly comparable as both firms employ former Brevan Howard partners in senior roles (CIO EG Fisher) and compete for the same institutional allocator mandates in fixed income RV.
• Millennium Management: Large multi-strategy, multi-PM hedge fund platform. Mariner's 25+ strategy team structure mirrors Millennium's federated PM model, both seeking uncorrelated alpha across multiple portfolio managers with shared institutional infrastructure.
• DoubleLine Capital: Independent fixed income and credit manager with strong securitized product expertise. Comparable boutique alternative to Mariner in delivering specialized mortgage-backed and credit strategies to institutional investors.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/mariner-investment-group

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments4 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mariner Investment Group