Millstreet Capital Management LLC — 13F Holdings & Portfolio
CIK 1590729 · latest 13F-HR filed 2026-08-14
Millstreet Capital Management LLC manages $368.1M in 13F-reported U.S. long-equity assets across 2 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are DBD (94.81%), DEC (5.19%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 0 new positions and exited 0; 0 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.
Long-equity book
Distinct positions
Filed 2026-08-14
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.
As of the firm’s regulatory filing dated Mar 30, 2026.
8TH FLOOR
BOSTON, MA 02116
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| CONNOLLY, BRIAN, DRISCOLL Control | MANAGING MEMBER, CLASS A since Mar 2010 | 25–50% | Individual |
| DANFORTH, DAVID, THOMAS Control | CHIEF OPERATING OFFICER since Aug 2018 | Less than 5% | Individual |
| GROWNEY, JEFFREY, THOMAS Control | MEMBER/HEAD OF BUSINESS DEVELOPMENT & INVESTOR RELATIONS, CLASS B since Jun 2017 | 10–25% | Individual |
| KASTRUD, JANET, YORK Control | CHIEF COMPLIANCE OFFICER since Aug 2018 | Less than 5% | Individual |
| KELLEHER, CRAIG, M Control | MANAGING MEMBER, CLASS A since Mar 2010 | 25–50% | Individual |
| ROSELLO, CHRISTINA, SADOWSKI Control | CHIEF FINANCIAL OFFICER since Feb 2020 | Less than 5% | Individual |
Ownership & leadership changes · 8 filings with changes since Jul 31, 2012
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.
- ChangedGROWNEY, JEFFREY, THOMAS · ownership 5–10% → 10–25%
- AddedROSELLO, CHRISTINA, SADOWSKI · CHIEF FINANCIAL OFFICER · Less than 5% · control person
- ChangedDANFORTH, DAVID, THOMAS · title CHIEF OPERATING OFFICER/CHIEF FINANCIAL OFFICER → CHIEF OPERATING OFFICER
- No longer listedVAIL, REBECCA, JOHNSON · MEMBER, CLASS A · 5–10% · listed since Mar 2010
- ChangedGROWNEY, JEFFREY, THOMAS · now a control person
- AddedDANFORTH, DAVID, THOMAS · CHIEF OPERATING OFFICER/CHIEF FINANCIAL OFFICER · Less than 5% · control person
- AddedKASTRUD, JANET, YORK · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedVAIL, REBECCA, JOHNSON · title MEMBER/CHIEF FINANCIAL OFFICER/CHIEF OPERATING OFFICER/CHIEF COMPLIANCE OFFICER, CLASS A → MEMBER, CLASS A; no longer a control person
- AddedGROWNEY, JEFFREY, THOMAS · MEMBER/HEAD OF BUSINESS DEVELOPMENT & INVESTOR RELATIONS, CLASS B · 5–10%
- ChangedVAIL, REBECCA, JOHNSON · ownership 10–25% → 5–10%
- No longer listedATLANTIC ASSET MANAGEMENT, L.L.C. · MEMBER · 25–50% · indirect via MAPS CAPITAL ADVISORS LLC · control person · listed since Aug 2010
- No longer listedATLANTIC CAPITAL HOLDINGS, LLC · OWNER · 75% or more · indirect via ATLANTIC ASSET MANAGEMENT, L.L.C. · control person · listed since Apr 2015
- No longer listedBICKNELL FAMILY HOLDING COMPANY, LLC · MEMBER · 75% or more · indirect via MARINER HOLDINGS, LLC · control person · listed since Apr 2008
- No longer listedBICKNELL, MARTIN, CHRISTOPHER · ELECTED MANAGER · General partner, trustee or manager · indirect via BICKNELL FAMILY HOLDING COMPANY, LLC · control person · listed since Jul 2007
- No longer listedDEARY, RICHARD, THADDEUS · PARTNER · 25–50% · indirect via ATLANTIC CAPITAL HOLDINGS, LLC · control person · listed since Aug 2014
- No longer listedMAPS CAPITAL ADVISORS LLC · GENERAL PARTNER · General partner, trustee or manager · indirect via PALMER SQUARE EMERGING MANAGER FUND L.P. · control person · listed since May 2010
- No longer listedMARINER HOLDINGS, LLC · MANAGING MEMBER · 75% or more · indirect via MONTAGE INVESTMENTS, LLC · control person · listed since Jan 2010
- No longer listedMONTAGE INVESTMENTS, LLC · MANAGING MEMBER · 50–75% · indirect via PALMER SQUARE CAPITAL ADVISORS LLC · control person · listed since Sep 2009
- No longer listedMORTON, MICHELLE, ANN · PARTNER · 50–75% · indirect via ATLANTIC CAPITAL HOLDINGS, LLC · control person · listed since Dec 2013
- No longer listedPALMER SQUARE CAPITAL ADVISORS LLC · MANAGING MEMBER · 50–75% · indirect via MAPS CAPITAL ADVISORS LLC · control person · listed since Aug 2010
- No longer listedPALMER SQUARE EMERGING MANAGER FUND L.P. · MEMBER, CLASS B · 25–50% · listed since Apr 2011
- ChangedVAIL, REBECCA, JOHNSON · ownership 5–10% → 10–25%
- No longer listedSELLERS, RONALD, WARREN · MEMBER/CHAIRMAN/CEO · 50–75% · indirect via ATLANTIC ASSET MANAGEMENT, L.L.C. · control person · listed since Jun 2007
- AddedATLANTIC CAPITAL HOLDINGS, LLC · OWNER · 75% or more · indirect via ATLANTIC ASSET MANAGEMENT, L.L.C. · control person
- AddedDEARY, RICHARD, THADDEUS · PARTNER · 25–50% · indirect via ATLANTIC CAPITAL HOLDINGS, LLC · control person
- AddedMORTON, MICHELLE, ANN · PARTNER · 50–75% · indirect via ATLANTIC CAPITAL HOLDINGS, LLC · control person
- No longer listedBICKNELL FAMILY MANAGEMENT COMPANY TRUST · MANAGING MEMBER · General partner, trustee or manager · indirect via BICKNELL FAMILY HOLDING COMPANY, LLC · control person · listed since Jun 2009
- No longer listedBICKNELL, MARTIN, CHRISTOPHER · TRUSTEE · General partner, trustee or manager · indirect via BICKNELL FAMILY MANAGEMENT COMPANY TRUST · control person · listed since Jun 2009
- No longer listedFREEMAN, WILLIAM, ALLEN · TRUSTEE · General partner, trustee or manager · indirect via BICKNELL FAMILY MANAGEMENT COMPANY TRUST · control person · listed since Jun 2009
- No longer listedMONTAGE ALTERNATIVE ADVISORS LLC · MEMBER · 25–50% · indirect via MAPS CAPITAL ADVISORS LLC · control person · listed since Aug 2010
- No longer listedMONTAGE INVESTMENTS, LLC · MANAGING MEMBER · 75% or more · indirect via MONTAGE ALTERNATIVE ADVISORS LLC · control person · listed since Aug 2010
- AddedBICKNELL, MARTIN, CHRISTOPHER · ELECTED MANAGER · General partner, trustee or manager · indirect via BICKNELL FAMILY HOLDING COMPANY, LLC · control person
- AddedMONTAGE INVESTMENTS, LLC · MANAGING MEMBER · 50–75% · indirect via PALMER SQUARE CAPITAL ADVISORS LLC · control person
- AddedPALMER SQUARE CAPITAL ADVISORS LLC · MANAGING MEMBER · 50–75% · indirect via MAPS CAPITAL ADVISORS LLC · control person
- ChangedBICKNELL FAMILY HOLDING COMPANY, LLC · indirect via MARINER HOLDINGS, LLC: title MANAGING MEMBER → MEMBER
- ListedATLANTIC ASSET MANAGEMENT, L.L.C. · MEMBER · 25–50% · indirect via MAPS CAPITAL ADVISORS LLC · control person
- ListedBICKNELL FAMILY HOLDING COMPANY, LLC · MANAGING MEMBER · 75% or more · indirect via MARINER HOLDINGS, LLC · control person
- ListedBICKNELL FAMILY MANAGEMENT COMPANY TRUST · MANAGING MEMBER · General partner, trustee or manager · indirect via BICKNELL FAMILY HOLDING COMPANY, LLC · control person
- ListedBICKNELL, MARTIN, CHRISTOPHER · TRUSTEE · General partner, trustee or manager · indirect via BICKNELL FAMILY MANAGEMENT COMPANY TRUST · control person
- ListedCONNOLLY, BRIAN, DRISCOLL · MANAGING MEMBER, CLASS A · 25–50% · control person
- ListedFREEMAN, WILLIAM, ALLEN · TRUSTEE · General partner, trustee or manager · indirect via BICKNELL FAMILY MANAGEMENT COMPANY TRUST · control person
- ListedKELLEHER, CRAIG, M · MANAGING MEMBER, CLASS A · 25–50% · control person
- ListedMAPS CAPITAL ADVISORS LLC · GENERAL PARTNER · General partner, trustee or manager · indirect via PALMER SQUARE EMERGING MANAGER FUND L.P. · control person
- ListedMARINER HOLDINGS, LLC · MANAGING MEMBER · 75% or more · indirect via MONTAGE INVESTMENTS, LLC · control person
- ListedMONTAGE ALTERNATIVE ADVISORS LLC · MEMBER · 25–50% · indirect via MAPS CAPITAL ADVISORS LLC · control person
- ListedMONTAGE INVESTMENTS, LLC · MANAGING MEMBER · 75% or more · indirect via MONTAGE ALTERNATIVE ADVISORS LLC · control person
- ListedPALMER SQUARE EMERGING MANAGER FUND L.P. · MEMBER, CLASS B · 25–50%
- ListedSELLERS, RONALD, WARREN · MEMBER/CHAIRMAN/CEO · 50–75% · indirect via ATLANTIC ASSET MANAGEMENT, L.L.C. · control person
- ListedVAIL, REBECCA, JOHNSON · MEMBER/CHIEF FINANCIAL OFFICER/CHIEF OPERATING OFFICER/CHIEF COMPLIANCE OFFICER, CLASS A · 5–10% · 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.
Millstreet Capital Management LLC 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).
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-14 | $368.1M | 2 | 0001590729-26-000008 |
| 2026-03-31 | 2026-05-15 | $417.6M | 2 | 0001590729-26-000005 |
| 2025-12-31 | 2026-02-17 | $438.7M | 3 | 0001590729-26-000004 |
| 2025-09-30 | 2025-11-14 | $374.8M | 2 | 0001590729-25-000010 |
BOSTON, MA 02116