# Mariner Investment Group

Mariner Investment Group is a Generic based in New York, United States.

## Overview

- **Organization type:** Generic
- **Headquarters:** New York, United States
- **Region:** North America
- **Address:** Harrison, NY, United States
- **Founded:** 1992
- **Assets under management:** $219.3B (Altss estimate)
- **Website:** https://www.marinerinvestment.com
- **LinkedIn:** https://www.linkedin.com/company/mariner-investment-group

## Regulatory record

- **CRD number:** 124744
- **Registration status:** APPROVED
- **Latest Form ADV filing:** 2026-03-31T05:00:00.000Z
- **Reports private funds:** Yes
- **Private funds reported:** 0
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/124744

## About

Mariner Investment Group is based in Harrison, New York. Its organizational structure follows a manager-of-managers model: the firm selects, monitors, and allocates to external investment managers across strategies, instead of running a directly managed portfolio. The firm's listed description simply states 'Manager of Managers.' With an estimated $219.3B in assets under management (Altss estimate), Mariner Investment Group's deployment model operates through external manager selection. The specific asset-class mix, geographic footprint, and stage coverage remain undisclosed. No named portfolio companies, co-investment partners, or specific fund commitments are publicly attributed to the firm. Team size, additional office locations, and adjacent vehicles such as philanthropic foundations or operating businesses are not publicly disclosed. No dated operational event from the last 24 months is publicly confirmed for Mariner Investment Group. Mariner Investment Group's structural differentiator is its pure manager-of-managers architecture. The firm makes no direct investments and, based on available information, does not develop internal investment teams. This model concentrates operational effort on external manager due diligence and ongoing allocation decisions.

## Questions

### How does Mariner Investment Group invest its capital?

Mariner Investment Group operates as a manager of managers. The firm allocates capital to external investment managers rather than building internal investment teams or making direct investments.

### Does Mariner Investment Group make direct investments?

Mariner Investment Group does not offer a direct deal program. Its entire investment approach is based on selecting and monitoring external managers, making it a pure fund-of-funds operation in structure.

## Related profiles

- [CFG Pension Plan](https://altss.com/profile/cfg-pension-plan)
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Last updated: 2026-06-03T20:00:00.000Z

Canonical page: https://altss.com/profile/mariner-investment-group-mig

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