Clients
Diameter Capital Partners serves 44 clients. The average client has about $654 million with the firm.
- Pooled investment vehicles44 clients100%
Show client breakdownHide client breakdown
| Client type | Clients | Regulatory AUM | Share | Avg. per client |
|---|---|---|---|---|
| Pooled investment vehicles | 44 | $28,755,794,425 | 100.0% | $653.5M |
| Total | 44 | $28,755,794,425 | 100% | $653.5M |
- Clients
- 44
- Regulatory AUM
- $28,755,794,425
- Share
- 100.0%
- Avg. per client
- $653.5M
Total
- Clients
- 44
- Regulatory AUM
- $28,755,794,425
- Share
- 100%
- Avg. per client
- $653.5M
What it does
Diameter Capital Partners provides portfolio management for pooled vehicles. It is paid through a percentage of assets and performance-based fees.
Diameter Capital Partners advises 34 private funds.
100.0% of assets ($28.76B across 44 accounts) are managed with discretion. 73% of clients are outside the U.S., and 0 clients received advice without assets under management last fiscal year.
Custodians
Diameter Capital Partners has custody of $10.63B for 27 clients.
- All other custodians$28.76B100%
Ownership and leadership
SG Diameter LLC owns 25% to 50% of Diameter Capital Partners.
- Owns 50% to 75% of Diameter Capital Partners LP
Scott Goodwin
Control person · since November 2016
- Owns 50% to 75% of Diameter Capital Partners LP
Jonathan Lewinsohn
Control person · since November 2016
- Owns 25% to 50% of Diameter Capital Partners LP
SG Diameter LLC
Control person · since July 2021
- Owns 25% to 50% of Diameter Capital Partners LP
Diameter Management Intermediate LP
Control person · since July 2021
- Owns 5% to 10% of Diameter Capital Partners LP
Apo Investment Manager Aggregator Vehicle, L.P.
since July 2026
Leadership
- Matthew GilmartinChief Financial Officer and Chief Operating Officer
- Michael CohnChief Compliance Officer and General Counsel
- Scott GoodwinCo-Founder,managing Member and Limited Partner
- Jonathan LewinsohnCo-Founder,managing Member and Limited Partner
Staff
- 130 employees
- 67 in advisory functions
Reported holdings
Diameter Capital Partners’ reported 13F holdings total $1.24B across 34 positions, and the ten largest make up 79.1% of it.
- $1.24B
- Reported 13F value
- 34
- Positions
- 79.1%
- In the 10 largest
- +16.1%
- Value vs. prior quarter
- State Str SPDR S&P 500 ETF T · TR UnitPut24.1%
- iShares Gold TR · iShares New20.5%
- Sharonai Holdings Inc. · Conv Bond10.2%
- Telephone & Data Sys Inc.5.0%
- Masterbrand Inc.4.0%
- Uniti Group LLC · Com Shs3.7%
- Space Exploration Techn Corp. · Class A Com Stk3.4%
- Fortune Brands Innovations I3.1%
- Echostar Corp. · CL A2.7%
- James Hardie Inds PLC2.5%
Together, the ten largest are 79.1% of reported value.
A 13F covers only exchange-traded long positions the firm holds with discretion, so this $1.24B is not its $28.76B in regulatory assets and does not represent any individual client's portfolio.
Fees
Diameter Capital Partners is paid through a percentage of assets under management and performance-based fees.
Diameter Capital Partners’ fee rates are not included in this profile. Find its brochure on the SEC’s site.
Offices and registrations
Besides its headquarters, Diameter Capital Partners has 2 offices, with 2 listed addresses across 2 states.
Florida · 1 listed address
- 180 Lakeview Avenue, West Palm Beach
New York · 1 listed address
- 50 Hudson Yards, Suite 6600a, New YorkHQ
Registration details
- Legal name
- Diameter Capital Partners LP
- Headquarters
- 50 Hudson Yards, Suite 6600a, New York, NY 10001
- Phone
- 212-655-1400
- Website
- www.diametercap.com
- SEC file
- 801-111022
- Structure
- Delaware limited partnership
- Fiscal year end
- December
This directory does not report disciplinary history, for any firm or individual, in either direction. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. See this firm's record on adviserinfo.sec.gov
Common questions
How many clients does Diameter Capital Partners have?
Diameter Capital Partners has 44 clients and manages $28.8 billion for them, as of August 2026.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 27 August 2026
What services does Diameter Capital Partners offer?
Diameter Capital Partners provides portfolio management for pooled vehicles.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How many financial advisors does Diameter Capital Partners have?
Diameter Capital Partners has 0 investment adviser representatives registered with state securities authorities, out of 130 employees, and 67 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
Who owns Diameter Capital Partners?
Diameter Capital Partners’ direct owners are SG Diameter LLC (25% to 50%), Diameter Management Intermediate LP (25% to 50%), Apo Investment Manager Aggregator Vehicle, L.P. (5% to 10%), Scott Goodwin (50% to 75%) and Jonathan Lewinsohn (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 27 August 2026
How does Diameter Capital Partners get paid?
Diameter Capital Partners is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file