What Diameter Capital Partners does

Diameter Capital Partners is a privately held, New York-based alternative asset manager founded in 2017 by Scott Goodwin and Jonathan Lewinsohn. The firm invests across global credit markets through a diversified platform spanning hedged and dislocation strategies, direct lending to middle-market companies, CLOs/CDOs, a long-only opportunistic strategy branded Diameter Dynamic Credit, and flexible capital solutions investments across the capital structure. It serves two distinct customer sets: institutional limited partners (pension funds, endowments, family offices, and sovereign wealth funds) who allocate capital to the firm's funds, and middle-market corporate borrowers who receive directly originated senior secured loans.

The firm combines fundamental credit research with technical trading expertise and risk analytics under a flat organizational structure intended to accelerate decision-making and capital deployment. Investment processes integrate top-down macro views with bottom-up portfolio construction, applying a relative-value lens across asset classes and capital structures to target absolute returns through the cycle. Diameter maintains offices in New York (headquarters, 50 Hudson Yards), London (23 Hill Street), and West Palm Beach (180 Lakeview Avenue).

Diameter generates revenue through traditional alternative-asset-manager economics: recurring management fees on assets under management plus performance fees (carried interest) across its hedge fund, dislocation funds, CLOs, and direct lending strategies. As of November 2025, firmwide AUM stood at $25 billion, with Diameter Dislocation Fund III alone closing at $4.5 billion in equity commitments in excess of its $4.25 billion hard cap. The firm has expanded into infrastructure credit (Delfin FLNG 1 consortium), European structured credit (Diameter Capital EU CLO 1 DAC), and asset-backed financings (Liberty Puerto Rico). Apollo Global Management's managed funds hold an approximately 5% equity stake acquired in October 2022.

Name

Diameter Capital Partners

Legal name

Diameter Capital Partners LP

Website

https://diametercap.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

101–250 employees

Short description

Diameter Capital Partners is a New York-based alternative asset manager founded in 2017 that runs a diversified global credit platform — hedge fund, dislocation funds, CLOs, direct lending, and capital solutions — for institutional LPs and middle-market borrowers, with $25 billion AUM as of November 2025.

Ownership category

akta.pro rank

Product category

Alternative Asset Management

NAICS

Portfolio Management and Investment Advice (523940), All Other Financial Investment Activities (52399), Other Investment Pools and Funds (5259)

SIC

Investment Advice (6282), Loan Brokers (6163)

akta.pro primary industry

Large-Cap / Sponsor Finance Direct Lending (FSANADAJ)

akta.pro secondary industry

Corporate Strategic Real Assets & Infrastructure Venture Investing (FSANAHAN)

Keywords

• Credit investment management
• Alternative asset management
• Private credit lending
• Structured credit products
• Distressed debt investing

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Alternative Asset Management Fees: Generates revenue through management fees and performance fees (carried interest) on assets under management across its hedge fund, dislocation funds, CLOs, and direct lending strategies. Firm manages $25 billion in AUM as of November 2025.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels7 records

Core offering

Diameter Capital Partners is an alternative asset manager focused on global credit markets, operating a diversified credit platform that combines fundamental research with trading and risk analytics. The firm invests across public and private asset classes through five core strategies: Hedged and Dislocation Strategies, Direct Lending, CLOs/CDOs, Diameter Dynamic Credit, and Capital Solutions. As of November 2025, the firm manages approximately $25 billion in AUM across its flagship hedge fund, dislocation funds, and structured credit vehicles.

Product overview

Diameter Capital Partners operates as an alternative asset manager offering a diversified credit platform with multiple investment strategies. The core product portfolio includes: Hedged and Dislocation Strategies (long/short and long-only credit investing), Direct Lending (senior secured middle-market loans), CLOs/CDOs (actively managed structured credit), Diameter Dynamic Credit (opportunistic long-only strategy), and Capital Solutions (flexible capital structure investments). The firm also manages dedicated dislocation funds including Diameter Dislocation Fund III ($4.5 billion) and its predecessor Diameter Dislocation Fund II ($2.2 billion). The platform combines fundamental research with trading and risk analytics across public and private credit markets.

Differentiator

Problem solved

Functional benefit

Brands

• Diameter Dislocation Fund III (DDF III): Third dislocation fund investing in market dislocations through stressed, distressed, and special situations across global markets, with $4.5 billion in equity commitments.
• Diameter Dynamic Credit

Products and services

• Hedged and Dislocation Strategies Long/short investing across the credit spectrum from new issuance to distressed in a size-constrained format, combined with long-only investing in micro-cyclical/thematic dislocations and broader macro cycles. Offered to institutional limited partners seeking diversified credit exposure.
• Direct Lending Directly originated, senior secured loans to middle-market companies (sponsored and non-sponsored) emphasizing structural protections. Targets borrowers needing flexible financing solutions.
• CLOs/CDOs Actively managed portfolios of leveraged loans, high yield bonds, investment grade and other credit instruments structured as CLOs/CDOs. Offered to institutional investors with inaugural European CLO issuance via Diameter EU CLO Advisors.
• Diameter Dynamic Credit Opportunistic long-only credit strategy with the flexibility to invest across public and private markets, including high yield, loans, investment grade, structured credit, and direct lending. Targeted at institutional investors seeking flexible long-only credit exposure.
• Capital Solutions Opportunistic, flexible credit strategy that invests across the capital structure in senior secured lending, preferred/junior debt, and hung/lightly syndicated secured loans. Provided to middle-market companies and issuers needing tailored financing.
• Diameter Dislocation Fund III (DDF III) Third dedicated dislocation fund investing in market dislocations through stressed, distressed, and special situations across global markets. Raised $4.5 billion in equity commitments from a global base of institutional limited partners.
• Diameter Dislocation Fund II Second dedicated dislocation fund investing in stressed, distressed, and special situations. Closed in 2023 with approximately $2.2 billion of capital commitments; the fund entered harvest mode in April 2025.

Quantifiable outcome

• Diameter Dislocation Fund III raised $4.5 billion, exceeding $4.25 billion hard cap
• +2 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Oaktree Capital Management: Alternative asset manager specializing in credit strategies including high yield, distressed debt, CLOs, and direct lending; directly comparable to Diameter's diversified credit platform across hedged, dislocation, and private credit.
• Ares Management: Large alternative manager with credit and direct lending franchises including senior secured middle-market loans, CLOs, and special situations; directly comparable product overlap with Diameter's middle-market lending and structured credit strategies.
• HPS Investment Partners: Credit-led alternative manager offering direct lending, CLOs, syndicated credit, and special situations funds; one of the closest pure-play comparables to Diameter's diversified credit approach.
• Sixth Street Partners: Global investment firm focused on credit, direct lending, and structured solutions across the capital structure; similar middle-market direct lending and flexible capital solutions offerings to Diameter.
• Angelo Gordon: Multi-strategy alternative manager with credit, structured credit, and direct lending capabilities; comparable to Diameter's mix of hedged credit and dislocation strategies.
• Brigade Capital Management: Credit-focused alternative manager running event-driven, distressed, and special situations strategies with a long/short credit hedge fund franchise; one of the closest direct competitors to Diameter's flagship credit platform.
• Silver Point Capital: Credit-led alternative manager focused on special situations, distressed debt, and private credit; comparable to Diameter's dislocation and capital solutions strategies.
• Marathon Asset Management: Global credit and private equity manager with leveraged finance, structured credit, and special situations strategies; closely comparable to Diameter's diversified credit offerings.
• Blue Owl Capital: Alternative asset manager with leading direct lending franchise (Owl Rock) plus credit and GP stakes solutions; directly comparable middle-market lending focus with a public-market scale advantage.

Broad incumbents

• Apollo Global Management: Diversified alternative manager with major credit, CLO, direct lending, and special situations franchises, and a ~5% shareholder of Diameter; comparable to Diameter's credit toolkit but with broader asset classes and larger AUM.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/diameter-capital-partners-lp/mycompany/?viewAsMember=true

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries2 records

Funding overview

Funding rounds1 record

Investors1 record

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

M&A

Investments7 records

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

Frequently asked questions about Diameter Capital Partners