Mariner Investment Group LLC reported 38 positions worth $220.91M for the quarter ended Sep 30, 2026, up 22.0% on the prior quarter. It opened 20 new positions, added to 6, trimmed 6 and exited 31. Its largest holding is iShares Bitcoin Trust ETF at 67.1% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| DPC DPC Holdings PLC | +807.0K | – | $32.19M | 14.57% |
| NVDA Nvidia Corp | +7,500 | – | $1.71M | 0.775% |
| CAT Caterpillar Inc | +2,000 | – | $1.62M | 0.734% |
| CARR CARRIER GLOBAL Corp | +25.0K | – | $1.37M | 0.621% |
| OLN OLIN Corp | +82.3K | – | $1.28M | 0.578% |
| IBP Installed Building Products, Inc. | +6,000 | – | $1.15M | 0.521% |
| PCG PG&E Corp | +80.0K | – | $980.00K | 0.444% |
| RTX RTX Corp | +3,000 | – | $556.95K | 0.252% |
| LMT Lockheed Martin Corp | +1,000 | – | $509.25K | 0.231% |
| NOC Northrop Grumman Corp | +1,000 | – | $483.48K | 0.219% |
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| ETR Entergy Corp | -40.0K | -100.0% | $4.59M | Exited |
| WMB Williams Companies, Inc. | -55.0K | -100.0% | $4.09M | Exited |
| LECO Lincoln Electric Holdings Inc | -13.7K | -87.3% | $3.63M | 0.24% |
| MTZ Mastec Inc | -8,000 | -100.0% | $3.33M | Exited |
| AERO Grupo Aeromexico, S.A.B. de C.V. | -169.3K | -100.0% | $3.05M | Exited |
| FERG Ferguson Enterprises Inc. | -12.0K | -100.0% | $2.85M | Exited |
| BHF Brighthouse Financial, Inc. | -25.0K | -100.0% | $1.58M | Exited |
| FIX Comfort Systems Usa Inc | -750 | -100.0% | $1.49M | Exited |
| FOUR Shift4 Payments, Inc. | -40.0K | -80.0% | $1.45M | 0.164% |
| GLW Corning Inc | -9,000 | -64.3% | $1.38M | 0.348% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| DPC DPC Holdings PLC | +807.0K | $32.19M | 14.57% |
| NVDA Nvidia Corp | +7,500 | $1.71M | 0.775% |
| CAT Caterpillar Inc | +2,000 | $1.62M | 0.734% |
| CARR CARRIER GLOBAL Corp | +25.0K | $1.37M | 0.621% |
| OLN OLIN Corp | +82.3K | $1.28M | 0.578% |
| IBP Installed Building Products, Inc. | +6,000 | $1.15M | 0.521% |
| PCG PG&E Corp | +80.0K | $980.00K | 0.444% |
| RTX RTX Corp | +3,000 | $556.95K | 0.252% |
| LMT Lockheed Martin Corp | +1,000 | $509.25K | 0.231% |
| NOC Northrop Grumman Corp | +1,000 | $483.48K | 0.219% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| ETR Entergy Corp | -40.0K | $4.59M | 2.54% |
| WMB Williams Companies, Inc. | -55.0K | $4.09M | 2.26% |
| MTZ Mastec Inc | -8,000 | $3.33M | 1.84% |
| AERO Grupo Aeromexico, S.A.B. de C.V. | -169.3K | $3.05M | 1.68% |
| FERG Ferguson Enterprises Inc. | -12.0K | $2.85M | 1.57% |
| BHF Brighthouse Financial, Inc. | -25.0K | $1.58M | 0.874% |
| FIX Comfort Systems Usa Inc | -750 | $1.49M | 0.821% |
| IREN IREN Ltd | -30.0K | $1.37M | 0.758% |
| GEV GE Vernova Inc. | -1,000 | $1.17M | 0.649% |
| RRC Range Resources Corp | -30.0K | $1.12M | 0.616% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | IBIT iShares Bitcoin Trust ETF | Others | 3.13M | $148.14M | 67.06% | 0 | 0.0% | Unchanged | 0.24% |
| 2 | DPC DPC Holdings PLC | Industrials | 807.0K | $32.19M | 14.57% | +807.0K | – | New | 0.54% |
| 3 | RITM Rithm Capital Corp. | Financial Services | 1.37M | $12.27M | 5.55% | +41.1K | +3.1% | Added | 0.25% |
| 4 | CIM Chimera Investment Corp | Financial Services | 400.3K | $3.81M | 1.73% | +21.4K | +5.6% | Added | 0.48% |
| 5 | RWT Redwood Trust Inc | Financial Services | 640.4K | $2.48M | 1.12% | +90.0K | +16.4% | Added | 0.51% |
| 6 | NVDA Nvidia Corp | Technology | 7,500 | $1.71M | 0.775% | +7,500 | – | New | 0% |
| 7 | MFA Mfa Financial, Inc. | Financial Services | 215.9K | $1.69M | 0.767% | +5,900 | +2.8% | Added | 0.21% |
| 8 | CAT Caterpillar Inc | Industrials | 2,000 | $1.62M | 0.734% | +2,000 | – | New | 0% |
| 9 | PMT PennyMac Mortgage Investment Trust | Financial Services | 180.0K | $1.42M | 0.642% | 0 | 0.0% | Unchanged | 0.21% |
| 10 | CARR CARRIER GLOBAL Corp | Industrials | 25.0K | $1.37M | 0.621% | +25.0K | – | New | 0% |
| 11 | OLN OLIN Corp | Basic Materials | 82.3K | $1.28M | 0.578% | +82.3K | – | New | 0.07% |
| 12 | WIX Wix.com Ltd. | Technology | 17.1K | $1.24M | 0.56% | 0 | 0.0% | Unchanged | 0.03% |
| 13 | IBP Installed Building Products, Inc. | Industrials | 6,000 | $1.15M | 0.521% | +6,000 | – | New | 0.02% |
| 14 | DX Dynex Capital Inc | Financial Services | 95.0K | $1.06M | 0.479% | 0 | 0.0% | Unchanged | 0.04% |
| 15 | PCG PG&E Corp | Utilities | 80.0K | $980.00K | 0.444% | +80.0K | – | New | 0% |
Tip. Select a row to see that position’s full history at Mariner Investment.
As of its Q3 2026 13F filing, Mariner Investment Group LLC’s five largest positions were iShares Bitcoin Trust ETF (IBIT) at 67.1%, DPC Holdings PLC (DPC) at 14.6%, Rithm Capital Corp. (RITM) at 5.6%, Chimera Investment Corp (CIM) at 1.7%, Redwood Trust Inc (RWT) at 1.1% of the reported portfolio.
Mariner Investment Group LLC reported a 13F portfolio worth $220.91M across 38 positions for Q3 2026. That is up 22.0% from the previous quarter.
Its largest purchases by value were DPC Holdings PLC ($32.19M), Nvidia Corp ($1.71M), Caterpillar Inc ($1.62M). It opened 20 new positions.
Its largest sales by value were Entergy Corp ($4.59M), Williams Companies, Inc. ($4.09M), Lincoln Electric Holdings Inc ($3.63M). It exited 31 positions entirely.
From the Form 13F-HR reports Mariner Investment Group LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.