MARINER INVESTMENT GROUP LLC
Strategy in plain words
auto-generated from filingsMARINER INVESTMENT GROUP LLC is a wealth-management firm allocating client money, specialised in financials (66% of the long book), running a $194.2M US long book across 44 positions.
The portfolio is extremely concentrated — the top 10 positions are almost the whole book. Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: ISHARES BITCOIN TRUST ETF, RITHM CAPITAL CORP, SHIFT4 PAYMENTS INC-CLASS A, ISHARES 1-3 YEAR TREASURY BO, CHIMERA INVESTMENT CORP.
Over the last 9 quarters its long book ran on average 3.7pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/optionsSector allocation
Long book by quarter
What does MARINER INVESTMENT own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| FOUR SHIFT4 PAYMENTS INC-CLASS A | Services media | 145.0K | $6.3M | 3.3% | +16.0% |
| ETR ENTERGY CORP | Utilities | 40.0K | $4.5M | 2.3% | -11.1% |
| WMB WILLIAMS COS INC | Utilities | 45.0K | $3.3M | 1.7% | Held |
| CAT CATERPILLAR INC | Industrials | 3.8K | $2.7M | 1.4% | New |
| MTZ MASTEC INC | Industrials | 6.0K | $1.9M | 1.0% | -58.6% |
| LECO LINCOLN ELECTRIC HOLDINGS | Industrials | 6.0K | $1.5M | 0.8% | -62.5% |
| RRC RANGE RESOURCES CORP | Energy | 30.0K | $1.4M | 0.7% | -34.8% |
| EQT EQT CORP | Energy | 20.0K | $1.3M | 0.7% | Held |
| SOLS SOLSTICE ADV MATERIALS INC | Materials | 15.0K | $1.1M | 0.6% | New |
| WMT WALMART INC | Consumer discretionary | 7.3K | $903K | 0.5% | New |
| LGN LEGENCE CORP-CL A | Industrials | 15.0K | $847K | 0.4% | +50.0% |
| MCHP MICROCHIP TECHNOLOGY INC | Technology | 13.0K | $840K | 0.4% | New |
| WIX WIX.COM LTD | Technology | 9.0K | $811K | 0.4% | New |
| MTSI MACOM TECHNOLOGY SOLUTIONS H | Technology | 3.0K | $666K | 0.3% | New |
| LUMN LUMEN TECHNOLOGIES INC | Communications | 75.0K | $521K | 0.3% | Held |
| CCK CROWN HOLDINGS INC | Industrials | 5.0K | $501K | 0.3% | Held |
| AES AES CORP | Utilities | 35.0K | $493K | 0.3% | New |
| NE NOBLE CORP PLC | Energy | 10.0K | $491K | 0.3% | Held |
| WOLF WOLFSPEED INC | Technology | 25.0K | $408K | 0.2% | +25.0% |
| KRMN KARMAN HOLDINGS INC | Industrials | 5.0K | $400K | 0.2% | New |
| XPRO EXPRO GROUP HOLDINGS NV | Energy | 20.0K | $348K | 0.2% | Held |
| PKG PACKAGING CORP OF AMERICA | Other | 1.5K | $318K | 0.2% | New |
| CORZ CORE SCIENTIFIC INC | Financials | 20.0K | $299K | 0.2% | New |
| PMTS CPI CARD GROUP INC | Other | 18.1K | $262K | 0.1% | New |
| TDS TELEPHONE AND DATA SYSTEMS | Communications | 5.0K | $211K | 0.1% | Held |
| IHRT IHEARTMEDIA INC - CLASS A | Communications | 63.2K | $184K | 0.1% | New |
| WING WINGSTOP INC | Consumer discretionary | 1.0K | $155K | 0.1% | New |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 5, 2026 | 108 | $345.9M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 25, 2026 | 111 | $1.71B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 14, 2025 | 76 | $330.6M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 16, 2025 | 66 | $281.7M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 5, 2025 | 36 | $254.2M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 22, 2025 | 46 | $504.6M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 29, 2024 | 31 | $371.3M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 24, 2024 | 22 | $462.9M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 14, 2024 | 28 | $321.9M | canonical | SEC ↗ |