Diameter Capital Partners LP — 13F Holdings & Portfolio
CIK 1727012 · latest 13F-HR filed 2026-08-14
Diameter Capital Partners LP manages $1.24B in 13F-reported U.S. long-equity assets across 34 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SPY (24.09%), IAU (20.48%), SHAZW (10.22%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 19 new positions and exited 7; 6 existing positions rose in reported value and 6 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
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AUM
$1.24B
Long-equity book
Holdings
34
Distinct positions
Period
2026-06-30
Filed 2026-08-14
Q/Q Activity
+19 / −7 / ↑6 / ↓6
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26IAU27.0% · newSHAZW13.5% · newTDS6.6% · newMBC5.2% · +209%UNIT4.9% · -30%SPCX4.5% · newFBIN4.1% · +2%ECHO3.5% · newJHX3.3% · +2244%WOLF3.2% · newAMBP2.5% · +13%KEEL2.5% · newVISN2.4% · +119%CMCSA2.2% · newOVV2.2% · newMAGN1.5% · 0%SILA1.4% · -58%SEI1.3% · newCMCO1.2% · 0%CHTR1.1% · newCBRS0.8% · newNCDL0.8% · -56%WING0.7% · newPFLT0.7% · -46%CYH0.7% · newCGBD0.6% · newEAT0.5% · newFWRD0.5% · newMWH0.3% · newINIO0.2% · newBBDC0.1% · -93%
Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 75.8%Cumulative share of the portfolio held in the largest N positions.
Firm Profile & Key People
As of the firm’s regulatory filing dated Aug 27, 2026.
Assets Under Management
$28.76B
Discretionary
$28.76B
Employees
130
Accounts
44
Address
50 HUDSON YARDS
SUITE 6600A
NEW YORK, NY 10001
SUITE 6600A
NEW YORK, NY 10001
Phone
(212) 655-1400
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| COHN, MICHAEL, JOSHUA Control | CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL since Aug 2024 | Less than 5% | Individual |
| DIAMETER CAPITAL PARTNERS GP LLC Control | GENERAL PARTNER since Nov 2016 | Less than 5% | Domestic Entity |
| DIAMETER MANAGEMENT INTERMEDIATE LP Control | LIMITED PARTNER since Jul 2021 | 25–50% | Domestic Entity |
| GILMARTIN, MATTHEW, GERARD Control | CHIEF FINANCIAL OFFICER AND CHIEF OPERATING OFFICER since Jul 2019 | Less than 5% | Individual |
| GOODWIN, SCOTT, KREITLER Control | CO-FOUNDER,MANAGING MEMBER AND LIMITED PARTNER since Nov 2016 | Less than 5% | Individual |
| LEWINSOHN, JONATHAN, NMN Control | CO-FOUNDER,MANAGING MEMBER AND LIMITED PARTNER since Nov 2016 | Less than 5% | Individual |
| SG DIAMETER LLC Control | LIMITED PARTNER since Jul 2021 | 25–50% | Domestic Entity |
| APO INVESTMENT MANAGER AGGREGATOR VEHICLE, L.P. | LIMITED PARTNER since Jul 2026 | 5–10% | Domestic Entity |
| GOODWIN, SCOTT, KREITLER Control Indirect owner via DIAMETER CAPITAL PARTNERS GP LLC | MEMBER since Nov 2016 | 50–75% | Individual |
| GOODWIN, SCOTT, KREITLER Control Indirect owner via SG DIAMETER LLC | MEMBER since Jul 2021 | 75% or more | Individual |
| LEWINSOHN, JONATHAN, NMN Control Indirect owner via DIAMETER CAPITAL PARTNERS GP LLC | MEMBER since Nov 2016 | 50–75% | Individual |
| LEWINSOHN, JONATHAN, NMN Control Indirect owner via DIAMETER MANAGEMENT INTERMEDIATE LP | LIMITED PARTNER since Jul 2021 | 75% or more | Individual |
Ownership & leadership changes · 8 filings with changes since Jul 19, 2017
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
Aug 27, 2026 filing
- AddedAPO INVESTMENT MANAGER AGGREGATOR VEHICLE, L.P. · LIMITED PARTNER · 5–10%
Mar 31, 2026 filing
- ChangedCOHN, MICHAEL, JOSHUA · title GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER → CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL
- ChangedGILMARTIN, MATTHEW, GERARD · title CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER & HEAD OF OPERATIONS → CHIEF FINANCIAL OFFICER AND CHIEF OPERATING OFFICER
- ChangedGOODWIN, SCOTT, KREITLER · title CO-FOUNDER & MANAGING PARTNER → CO-FOUNDER,MANAGING MEMBER AND LIMITED PARTNER
- ChangedLEWINSOHN, JONATHAN, NMN · title CO-FOUNDER & MANAGING PARTNER → CO-FOUNDER,MANAGING MEMBER AND LIMITED PARTNER
Aug 1, 2024 filing
- No longer listedRAO, SHAILINI · CO-CHIEF OPERATING OFFICER, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Jan 2018
- AddedCOHN, MICHAEL, JOSHUA · GENERAL COUNSEL AND CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedGILMARTIN, MATTHEW, GERARD · title CO-CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER & HEAD OF OPERATIONS → CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER & HEAD OF OPERATIONS
Mar 31, 2023 filing
- AddedDIAMETER MANAGEMENT INTERMEDIATE LP · LIMITED PARTNER · 25–50% · control person
- AddedGOODWIN, SCOTT, KREITLER · MEMBER · 75% or more · indirect via SG DIAMETER LLC · control person
- AddedLEWINSOHN, JONATHAN, NMN · LIMITED PARTNER · 75% or more · indirect via DIAMETER MANAGEMENT INTERMEDIATE LP · control person
- AddedSG DIAMETER LLC · LIMITED PARTNER · 25–50% · control person
- ChangedGILMARTIN, MATTHEW, GERARD · title CHIEF FINANCIAL OFFICER → CO-CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER & HEAD OF OPERATIONS
- ChangedGOODWIN, SCOTT, KREITLER · title CO-FOUNDER, MANAGING MEMBER AND LIMITED PARTNER → CO-FOUNDER & MANAGING PARTNER; ownership 25–50% → Less than 5%
- ChangedLEWINSOHN, JONATHAN, NMN · title CO-FOUNDER, MANAGING MEMBER AND LIMITED PARTNER → CO-FOUNDER & MANAGING PARTNER; ownership 25–50% → Less than 5%
- ChangedRAO, SHAILINI · title CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL → CO-CHIEF OPERATING OFFICER, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER
Mar 30, 2020 filing
- No longer listedSULLIVAN, CHRISTOPHER, HENRY · CHIEF OPERATING OFFICER · Less than 5% · control person · listed since Feb 2017
- AddedGILMARTIN, MATTHEW, GERARD · CHIEF FINANCIAL OFFICER · Less than 5% · control person
Mar 29, 2018 filing
- AddedDIAMETER CAPITAL PARTNERS GP LLC · GENERAL PARTNER · Less than 5% · control person
- AddedGOODWIN, SCOTT, KREITLER · MEMBER · 50–75% · indirect via DIAMETER CAPITAL PARTNERS GP LLC · control person
- AddedLEWINSOHN, JONATHAN, NMN · MEMBER · 50–75% · indirect via DIAMETER CAPITAL PARTNERS GP LLC · control person
Jan 31, 2018 filing
- AddedRAO, SHAILINI · CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL · Less than 5% · control person
- ChangedSULLIVAN, CHRISTOPHER, HENRY · title CHIEF COMPLIANCE OFFICER AND CHIEF OPERATING OFFICER → CHIEF OPERATING OFFICER
Jul 24, 2017 filing
- ChangedGOODWIN, SCOTT, KREITLER · title CO-FOUNDER AND MANAGING PARTNER → CO-FOUNDER, MANAGING MEMBER AND LIMITED PARTNER; ownership 50–75% → 25–50%
- ChangedLEWINSOHN, JONATHAN, NMN · title CO-FOUNDER AND MANAGING PARTNER → CO-FOUNDER, MANAGING MEMBER AND LIMITED PARTNER; ownership 50–75% → 25–50%
Jul 19, 2017 filing (earliest on record)
- ListedGOODWIN, SCOTT, KREITLER · CO-FOUNDER AND MANAGING PARTNER · 50–75% · control person
- ListedLEWINSOHN, JONATHAN, NMN · CO-FOUNDER AND MANAGING PARTNER · 50–75% · control person
- ListedSULLIVAN, CHRISTOPHER, HENRY · CHIEF COMPLIANCE OFFICER AND CHIEF OPERATING OFFICER · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- MASTERBRAND INC$36.3M +282.9%
- JAMES HARDIE INDS PLC$29.7M +3140.3%
- FORTUNE BRANDS INNOVATIONS I$11.7M +44.3%
- VISTANCE NETWORKS INC$7.8M +53.6%
- ARDAGH METAL PACKAGING S A$5.8M +31.8%
Top Trims
- ECHOSTAR CORP-$139.0M -80.7%
- SILA REALTY TRUST INC-$11.6M -46.6%
- BARINGS BDC INC-$11.3M -93.2%
- NUVEEN CHURCHILL DIRECT LEND-$10.0M -57.2%
- UNITI GROUP LLC-$7.4M -13.9%
New Positions
- ISHARES GOLD TR$254.0M
- SHARONAI HOLDINGS INC$126.7M
- TELEPHONE & DATA SYS INC$62.0M
- SPACE EXPLORATION TECHN CORP$42.7M
- WOLFSPEED INC$29.7M
Exited Positions
- NEBIUS GROUP N.V.$38.5M
- NEBIUS GROUP N.V.$37.2M
- PG&E CORP$21.1M
- UWM HOLDINGS CORPORATION$21.0M
- SLR INVESTMENT CORP$11.8M
Diameter Capital Partners LP Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | STATE STR SPDR S&P 500 ETF T Put | SPY | 78462F103 | $298.7M | 24.09% | 400,000 | SH |
| 2 | ISHARES GOLD TR | IAU | 464285204 | $254.0M | 20.48% | 3,363,600 | SH |
| 3 | SHARONAI HOLDINGS INC | SHAZW | 778920AC2 | $126.7M | 10.22% | 108,500,000 | PRN |
| 4 | TELEPHONE & DATA SYS INC | TDS | 879433829 | $62.0M | 5.00% | 1,675,955 | SH |
| 5 | MASTERBRAND INC | MBC | 57638P104 | $49.2M | 3.97% | 4,779,445 | SH |
| 6 | UNITI GROUP LLC | UNIT | 912932100 | $45.9M | 3.70% | 4,000,000 | SH |
| 7 | SPACE EXPLORATION TECHN CORP | SPCX | 84615Q103 | $42.7M | 3.44% | 250,000 | SH |
| 8 | FORTUNE BRANDS INNOVATIONS I | FBIN | 34964C106 | $38.2M | 3.08% | 696,350 | SH |
| 9 | ECHOSTAR CORP | ECHO | 278768106 | $33.2M | 2.67% | 326,754 | SH |
| 10 | JAMES HARDIE INDS PLC | JHX | G4253H101 | $30.7M | 2.47% | 1,172,112 | SH |
| 11 | WOLFSPEED INC | WOLF | 97785WAC0 | $29.7M | 2.39% | 11,970,000 | PRN |
| 12 | ARDAGH METAL PACKAGING S A | AMBP | L02235106 | $23.8M | 1.92% | 5,030,465 | SH |
| 13 | VISTANCE NETWORKS INC | VISN | 20337X109 | $22.4M | 1.80% | 1,750,000 | SH |
| 14 | COMCAST CORP NEW | CMCSA | 20030N101 | $20.6M | 1.66% | 840,000 | SH |
| 15 | OVINTIV INC | OVV | 69047Q102 | $20.5M | 1.66% | 390,000 | SH |
| 16 | KEEL INFRASTRUCTURE CORP | — | 09173BAA5 | $14.6M | 1.18% | 12,500,000 | PRN |
| 17 | MAGNERA CORP | MAGN | 55939A107 | $14.2M | 1.14% | 1,205,793 | SH |
| 18 | SILA REALTY TRUST INC | SILA | 146280508 | $13.3M | 1.07% | 437,473 | SH |
| 19 | SOLARIS ENERGY INFRAS INC | SEI | 83418M103 | $12.1M | 0.97% | 150,000 | SH |
| 20 | COLUMBUS MCKINNON CORP N Y | CMCO | 199333105 | $10.8M | 0.87% | 715,783 | SH |
| 21 | CHARTER COMMUNICATIONS INC | CHTR | 16119P108 | $10.7M | 0.86% | 75,000 | SH |
| 22 | KEEL INFRASTRUCTURE CORP | KEEL | 486917AA5 | $8.9M | 0.72% | 8,000,000 | PRN |
| 23 | CEREBRAS SYSTEMS INC | CBRS | 15675D103 | $7.7M | 0.62% | 35,000 | SH |
| 24 | NUVEEN CHURCHILL DIRECT LEND | NCDL | 67090S108 | $7.5M | 0.61% | 604,645 | SH |
| 25 | WINGSTOP INC | WING | 974155103 | $6.9M | 0.56% | 40,000 | SH |
| 26 | PENNANTPARK FLOATING RATE CA | PFLT | 70806A106 | $6.7M | 0.54% | 900,000 | SH |
| 27 | COMMUNITY HEALTH SYS INC NEW | CYH | 203668108 | $6.1M | 0.49% | 1,837,962 | SH |
| 28 | CARLYLE SECURED LENDING INC | CGBD | 872280102 | $5.4M | 0.43% | 508,387 | SH |
| 29 | BRINKER INTL INC | EAT | 109641100 | $5.0M | 0.40% | 29,500 | SH |
| 30 | FORWARD AIR CORP | FWRD | 34986A104 | $4.7M | 0.38% | 350,000 | SH |
| 31 | SOLV ENERGY INC | MWH | 78475V103 | $2.7M | 0.22% | 80,000 | SH |
| 32 | INNIO NV | INIO | N52A8C105 | $2.0M | 0.16% | 50,000 | SH |
| 33 | ECHOSTAR CORP Call | ECHO | 278768106 | $1.7M | 0.14% | 17,100 | SH |
| 34 | BARINGS BDC INC | BBDC | 06759L103 | $822.9K | 0.07% | 96,589 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $1.24B | 34 | 0001172661-26-003822 |
| 2026-06-30 | 2026-08-14 | $1.24B | 33 | 0001172661-26-003510 |
| 2026-03-31 | 2026-05-15 | $1.07B | 29 | 0001172661-26-002226 |
| 2025-12-31 | 2026-02-17 | $1.09B | 40 | 0001172661-26-000929 |
| 2025-09-30 | 2025-11-14 | $1.62B | 41 | 0001172661-25-004869 |
Filer Information
Address
50 HUDSON YARDSSUITE 6600A
NEW YORK, NY 10001
Phone
(212) 655-1400
Filing Manager
Diameter Capital Partners LP
New York, NY
Signatory
Michael Cohn
General Counsel & Chief Compliance Officer