Monarch Alternative Capital LP — 13F Holdings & Portfolio
CIK 1281084 · latest 13F-HR filed 2026-08-14
Monarch Alternative Capital LP manages $707.2M in 13F-reported U.S. long-equity assets across 8 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ECHO (26.44%), ECHO (23.40%), KEEL (21.33%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 3 new positions and exited 3; 2 existing positions rose in reported value and 2 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
$707.2M
Long-equity book
Holdings
8
Distinct positions
Period
2026-06-30
Filed 2026-08-14
Q/Q Activity
+3 / −3 / ↑2 / ↓2
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box 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 = 100%Cumulative share of the portfolio held in the largest N positions.
Firm Profile & Key People
As of the firm’s regulatory filing dated Jul 31, 2026.
Assets Under Management
$16.69B
Discretionary
$16.17B
Employees
107
Accounts
43
Address
535 MADISON AVENUE
22 FL
NEW YORK, NY 10022-4214
22 FL
NEW YORK, NY 10022-4214
Phone
(212) 554-1700
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| HERENSTEIN, ANDREW, JON Control | VICE CHAIRMAN since Mar 2002 | Less than 5% | Individual |
| MAMAN, STACEY, HARRIS Control | PRESIDENT since Jan 2008 | Less than 5% | Individual |
| MDRA GP LP Control | GENERAL PARTNER since Oct 2006 | 75% or more | Domestic Entity |
| SANTANA, CHRISTOPHER, MICHAEL Control | CHIEF EXECUTIVE OFFICER, CO-CHIEF INVESTMENT OFFICER since Mar 2002 | Less than 5% | Individual |
| SKLAR, ADAM, ROTH Control | CO-CHIEF INVESTMENT OFFICER since Jun 2025 | Less than 5% | Individual |
| WEINSTOCK, MICHAEL, ANDREW Control | EXECUTIVE CHAIRMAN since Mar 2002 | Less than 5% | Individual |
| Daniels, Colin, Joseph | MANAGING DIRECTOR, GENERAL COUNSEL since Dec 2023 | Less than 5% | Individual |
| Ellis, Hannah, Garland | MANAGING PRINCIPAL & CHIEF FINANCIAL OFFICER since Aug 2021 | Less than 5% | Individual |
| VOLOSHIN, RONEN, NMN | MANAGING DIRECTOR, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER since Aug 2011 | Less than 5% | Individual |
| HERENSTEIN, ANDREW, JON Control Indirect owner via MONARCH GP LLC | MEMBER since Oct 2006 | 25–50% | Individual |
| HERENSTEIN, ANDREW, JON Control Indirect owner via MDRA GP LP | LIMITED PARTNER since Oct 2006 | 25–50% | Individual |
| MONARCH GP LLC Control Indirect owner via MDRA GP LP | GENERAL PARTNER since Oct 2006 | General partner, trustee or manager | Domestic Entity |
| WEINSTOCK, MICHAEL, ANDREW Control Indirect owner via MONARCH GP LLC | MEMBER since Oct 2006 | 25–50% | Individual |
| WEINSTOCK, MICHAEL, ANDREW Control Indirect owner via MDRA GP LP | LIMITED PARTNER since Oct 2006 | 25–50% | Individual |
Ownership & leadership changes · 20 filings with changes since Nov 18, 2011
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.
Mar 31, 2026 filing
- ChangedSANTANA, CHRISTOPHER, MICHAEL · title CO-CHIEF EXECUTIVE OFFICER, CO-CHIEF INVESTMENT OFFICER → CHIEF EXECUTIVE OFFICER, CO-CHIEF INVESTMENT OFFICER
- ChangedWEINSTOCK, MICHAEL, ANDREW · title CO-CHIEF EXECUTIVE OFFICER → EXECUTIVE CHAIRMAN
Jul 21, 2025 filing
- Listed againSKLAR, ADAM, ROTH · CO-CHIEF INVESTMENT OFFICER · Less than 5% · control person
- ChangedHERENSTEIN, ANDREW, JON · title MANAGING PRINCIPAL → VICE CHAIRMAN
- ChangedMAMAN, STACEY, HARRIS · title MANAGING PRINCIPAL, CHIEF STRATEGY OFFICER & GLOBAL HEAD OF CLIENT PARTNERSHIPS → PRESIDENT; now a control person
- ChangedSANTANA, CHRISTOPHER, MICHAEL · title MANAGING PRINCIPAL → CO-CHIEF EXECUTIVE OFFICER, CO-CHIEF INVESTMENT OFFICER
- ChangedWEINSTOCK, MICHAEL, ANDREW · title CHIEF EXECUTIVE OFFICER → CO-CHIEF EXECUTIVE OFFICER
Mar 28, 2025 filing
- ChangedWEINSTOCK, MICHAEL, ANDREW · title MANAGING PRINCIPAL & CEO → CHIEF EXECUTIVE OFFICER
Mar 28, 2024 filing
- No longer listedKELLY, MICHAEL, JOHN · MANAGING PRINCIPAL, SENIOR COUNSEL & CHIEF OPERATING OFFICER · Less than 5% · listed since Jun 2010
- AddedDaniels, Colin, Joseph · MANAGING DIRECTOR, GENERAL COUNSEL · Less than 5%
- ChangedVOLOSHIN, RONEN, NMN · title GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER → MANAGING DIRECTOR, GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER
Mar 31, 2023 filing
- ChangedMAMAN, STACEY, HARRIS · title MANAGING PRINCIPAL & HEAD OF INVESTOR RELATIONS AND BUSINESS DEVELOPMENT → MANAGING PRINCIPAL, CHIEF STRATEGY OFFICER & GLOBAL HEAD OF CLIENT PARTNERSHIPS
Sep 15, 2021 filing
- AddedEllis, Hannah, Garland · MANAGING PRINCIPAL & CHIEF FINANCIAL OFFICER · Less than 5%
Aug 2, 2021 filing
- No longer listedMAROOF, MICHAEL, MAYER · MANAGING PRINCIPAL & CHIEF FINANCIAL OFFICER · Less than 5% · listed since Nov 2007
- ChangedHERENSTEIN, ANDREW, JON · indirect via MONARCH GP LLC: title OWNER → MEMBER
- ChangedHERENSTEIN, ANDREW, JON · indirect via MDRA GP LP: title OWNER → LIMITED PARTNER
- ChangedMONARCH GP LLC · indirect via MDRA GP LP: title OWNER → GENERAL PARTNER
- ChangedWEINSTOCK, MICHAEL, ANDREW · indirect via MONARCH GP LLC: title OWNER → MEMBER
- ChangedWEINSTOCK, MICHAEL, ANDREW · indirect via MDRA GP LP: title OWNER → LIMITED PARTNER
Mar 30, 2021 filing
- ChangedKELLY, MICHAEL, JOHN · title MANAGING PRINCIPAL, SENIOR GENERAL COUNSEL & CHIEF OPERATING OFFICER → MANAGING PRINCIPAL, SENIOR COUNSEL & CHIEF OPERATING OFFICER
Mar 28, 2020 filing
- No longer listedLOLOVIC, AGIM · CHIEF TECHNOLOGY OFFICER · Less than 5% · listed since Jan 2018
- ChangedKELLY, MICHAEL, JOHN · title MANAGING PRINCIPAL, GENERAL COUNSEL & CHIEF OPERATING OFFICER → MANAGING PRINCIPAL, SENIOR GENERAL COUNSEL & CHIEF OPERATING OFFICER
- ChangedMAMAN, STACEY, HARRIS · title MANAGING PRINCIPAL & DIRECTOR OF INVESTOR RELATIONS AND BUSINESS DEVELOPMENT → MANAGING PRINCIPAL & HEAD OF INVESTOR RELATIONS AND BUSINESS DEVELOPMENT
- ChangedVOLOSHIN, RONEN, NMN · title DEPUTY GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER → GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER
Nov 13, 2019 filing
- No longer listedMCSORLEY, WILLIAM, JAMES · CHIEF INFORMATION OFFICER · Less than 5% · listed since Jan 2014
Older changes (11 more filings)
Mar 28, 2019 filing
- No longer listedGILLIN, MICHAEL, DAVID · DIRECTOR OF OPERATIONS · Less than 5% · listed since Jan 2007
Mar 29, 2018 filing
- AddedLOLOVIC, AGIM · CHIEF TECHNOLOGY OFFICER · Less than 5%
- ChangedMCSORLEY, WILLIAM, JAMES · title CHIEF TECHNOLOGY OFFICER → CHIEF INFORMATION OFFICER
Mar 29, 2017 filing
- ChangedVOLOSHIN, RONEN, NMN · title ASSOCIATE GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER → DEPUTY GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER
Sep 30, 2016 filing
- AddedMCSORLEY, WILLIAM, JAMES · CHIEF TECHNOLOGY OFFICER · Less than 5%
Mar 31, 2015 filing
- No longer listedBARTELS, PATRICK, JOSEPH · MANAGING PRINCIPAL · Less than 5% · control person · listed since Jan 2011
- No longer listedROTENBERG, JOSIAH, MEYER · MANAGING PRINCIPAL, MONARCH ALTERNATIVE CAPITAL (EUROPE) LTD · Less than 5% · control person · listed since Oct 2012
- No longer listedSCHMITZ, ROGER, WILLIAM · MANAGING PRINCIPAL · Less than 5% · control person · listed since Mar 2014
- No longer listedSKLAR, ADAM, ROTH · MANAGING PRINCIPAL · Less than 5% · control person · listed since Jan 2012
- No longer listedVIGLIOTTA, THOMAS, JOSEPH · MANAGING PRINCIPAL · Less than 5% · control person · listed since Jan 2009
- ChangedGILLIN, MICHAEL, DAVID · no longer a control person
- ChangedKELLY, MICHAEL, JOHN · title MANAGING PRINCIPAL & GENERAL COUNSEL → MANAGING PRINCIPAL, GENERAL COUNSEL & CHIEF OPERATING OFFICER; no longer a control person
- ChangedMAMAN, STACEY, HARRIS · no longer a control person
- ChangedMAROOF, MICHAEL, MAYER · no longer a control person
- ChangedVOLOSHIN, RONEN, NMN · no longer a control person
Nov 3, 2014 filing
- Listed againROTENBERG, JOSIAH, MEYER · MANAGING PRINCIPAL, MONARCH ALTERNATIVE CAPITAL (EUROPE) LTD · Less than 5% · control person
Mar 28, 2014 filing
- No longer listedROTENBERG, JOSIAH, MEYER · MANAGING PRINCIPAL · Less than 5% · control person · listed since Jan 2007
- AddedSCHMITZ, ROGER, WILLIAM · MANAGING PRINCIPAL · Less than 5% · control person
- ChangedKELLY, MICHAEL, JOHN · title MANAGING PRINCIPAL & CHIEF LEGAL OFFICER → MANAGING PRINCIPAL & GENERAL COUNSEL
May 16, 2013 filing
- ChangedMAMAN, STACEY, HARRIS · title MANAGING PRINCIPAL & DIRECTOR OF INVESTOR RELATIONS → MANAGING PRINCIPAL & DIRECTOR OF INVESTOR RELATIONS AND BUSINESS DEVELOPMENT
- ChangedWEINSTOCK, MICHAEL, ANDREW · title MANAGING PRINCIPAL → MANAGING PRINCIPAL & CEO
Mar 28, 2013 filing
- ChangedMAROOF, MICHAEL, MAYER · title CHIEF FINANCIAL OFFICER → MANAGING PRINCIPAL & CHIEF FINANCIAL OFFICER
Mar 30, 2012 filing
- AddedSKLAR, ADAM, ROTH · MANAGING PRINCIPAL · Less than 5% · control person
Nov 18, 2011 filing (earliest on record)
- ListedBARTELS, PATRICK, JOSEPH · MANAGING PRINCIPAL · Less than 5% · control person
- ListedGILLIN, MICHAEL, DAVID · DIRECTOR OF OPERATIONS · Less than 5% · control person
- ListedHERENSTEIN, ANDREW, JON · MANAGING PRINCIPAL · Less than 5% · control person
- ListedHERENSTEIN, ANDREW, JON · OWNER · 25–50% · indirect via MONARCH GP LLC · control person
- ListedHERENSTEIN, ANDREW, JON · OWNER · 25–50% · indirect via MDRA GP LP · control person
- ListedKELLY, MICHAEL, JOHN · MANAGING PRINCIPAL & CHIEF LEGAL OFFICER · Less than 5% · control person
- ListedMAMAN, STACEY, HARRIS · MANAGING PRINCIPAL & DIRECTOR OF INVESTOR RELATIONS · Less than 5% · control person
- ListedMAROOF, MICHAEL, MAYER · CHIEF FINANCIAL OFFICER · Less than 5% · control person
- ListedMDRA GP LP · GENERAL PARTNER · 75% or more · control person
- ListedMONARCH GP LLC · OWNER · General partner, trustee or manager · indirect via MDRA GP LP · control person
- ListedROTENBERG, JOSIAH, MEYER · MANAGING PRINCIPAL · Less than 5% · control person
- ListedSANTANA, CHRISTOPHER, MICHAEL · MANAGING PRINCIPAL · Less than 5% · control person
- ListedVIGLIOTTA, THOMAS, JOSEPH · MANAGING PRINCIPAL · Less than 5% · control person
- ListedVOLOSHIN, RONEN, NMN · ASSOCIATE GENERAL COUNSEL & CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ListedWEINSTOCK, MICHAEL, ANDREW · MANAGING PRINCIPAL · Less than 5% · control person
- ListedWEINSTOCK, MICHAEL, ANDREW · OWNER · 25–50% · indirect via MONARCH GP LLC · control person
- ListedWEINSTOCK, MICHAEL, ANDREW · OWNER · 25–50% · indirect via MDRA GP LP · 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.
New Positions
- KEEL INFRASTRUCTURE CORP$150.9M
- CORE SCIENTIFIC INC NEW$117.7M
- FORWARD AIR CORP$2.6M
Exited Positions
- GLOBAL BUSINESS TRAVEL GROUP$43.5M
- BITFARMS LTD$13.9M
- ARDAGH METAL PACKAGING S A$12.0M
Monarch Alternative Capital 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 | ECHOSTAR CORP | ECHO | 278768AB2 | $187.0M | 26.44% | 60,000,000 | PRN |
| 2 | ECHOSTAR CORP | ECHO | 278768106 | $165.5M | 23.40% | 1,630,124 | SH |
| 3 | KEEL INFRASTRUCTURE CORP | KEEL | 486917107 | $150.9M | 21.33% | 26,285,000 | SH |
| 4 | CORE SCIENTIFIC INC NEW | CORZ | 21874A106 | $117.7M | 16.65% | 4,600,000 | SH |
| 5 | VISTANCE NETWORKS INC | VISN | 20337X109 | $41.5M | 5.87% | 3,250,000 | SH |
| 6 | MASTERBRAND INC | MBC | 57638P104 | $38.1M | 5.38% | 3,700,000 | SH |
| 7 | SPACE EXPLORATION TECHN CORP Put | SPCX | 84615Q103 | $4.0M | 0.57% | 23,500 | SH |
| 8 | FORWARD AIR CORP | FWRD | 34986A104 | $2.6M | 0.36% | 189,000 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $707.2M | 8 | 0000899140-26-000881 |
| 2026-03-31 | 2026-05-15 | $1.63B | 9 | 0000899140-26-000579 |
| 2025-12-31 | 2026-02-17 | $768.0M | 5 | 0000899140-26-000259 |
| 2025-09-30 | 2026-02-05 | $744.9M | 5 | 0000899140-26-000101 |
Filer Information
Address
535 MADISON AVENUENEW YORK, NY 10022
Phone
(212) 554-1700
Filing Manager
Monarch Alternative Capital LP
New York, NY
Signatory
Christopher Santana
Chief Executive Officer, Co-Chief Investment Officer