CIK: 0001096978
Total reported value
$345.9M
Reporting period: 2026-03-31 · Number of holdings: 108
MARINER INVESTMENT GROUP LLC disclosed 108 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $345.9M and a quarterly turnover rate of 156.0%.
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Mariner Investment Group LLC's disclosed holdings carry a Herfindahl concentration index of 0.151 — mathematically equivalent to about 7 equally-sized positions, well below its 108 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 3.78), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 53% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Add IBIT
+45.8% $13.7M
Add BABA 0.5 06-01-31
+66.7% $11.4M
Add FLR 1.125 08-15-29
+66.2% $13.8M
Add SNOW 0 10-01-27
+200.0% $10.3M
Add RITM
+53.4% $3.2M
Add ON 0.5 03-01-29
+25.0% $2.8M
Showing top 100 holdings (of 108 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | IBIT | Ishares Bitcoin Trust ETF | ETF-Crypto | 34.76% | +28.54% | +45.79% | |
| 2 | BABA 0.5 06-01-31 | Alibaba Group Holding | Stock-Consumer Disc | 10.04% | +8.68% | +66.67% | |
| 3 | FLR 1.125 08-15-29 | Fluor CORP | Stock-Industrials | 8.96% | +7.95% | +66.23% | |
| 4 | GPN 1.5 03-01-31 | Global Payments INC | Stock-Industrials | 6.38% | +6.38% | NEW | |
| 5 | SNOW 0 10-01-27 | Snowflake INC | Stock-Tech | 5.13% | +4.70% | +200.00% | |
| 6 | RITM | Rithm Capital CORP | Stock-Real Estate | 3.65% | +3.10% | +53.40% | |
| 7 | ON 0.5 03-01-29 | On Semiconductor CORP | Stock-Tech | 3.54% | +2.99% | +25.00% | |
| 8 | LYV 3.125 01-15-29 | Live Nation Entertainmen | Stock-Comm Services | 2.20% | — | — | |
| 9 | FOUR | Shift4 Payments Inc-class A | Stock-Tech | 2.02% | — | +276.00% | |
| 10 | SHY | Ishares 1-3 Year Treasury Bo | ETF-Gov Bonds | 1.81% | +1.80% | +2776.21% | |
| 11 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 1.68% | +1.67% | +1008.00% | |
| 12 | LYV 2.875 01-15-30 | Live Nation Entertainmen | Stock-Comm Services | 1.56% | — | — | |
| 13 | CIM | Chimera Investment CORP | Stock-Other | 1.37% | +1.16% | +30.65% | |
| 14 | ETR | Entergy CORP | Stock-Utilities | 1.30% | — | -11.11% | |
| 15 | VCSH | Vanguard S/t CORP Bond ETF | ETF-Corp Bonds | 1.20% | +1.20% | NEW | |
| 16 | WMB | Williams Cos INC | Stock-Energy | 0.99% | — | -51.28% | |
| 17 | RWT | Redwood Trust INC | Stock-Other | 0.89% | +0.65% | -26.16% | |
| 18 | CAT | Caterpillar INC | Stock-Industrials | 0.79% | +0.78% | -78.00% | |
| 19 | AERO | Grupo Aeromexico Sab De Cv | Stock-Other | 0.69% | +0.47% | — | |
| 20 | PMT | Pennymac Mortgage Investment | Stock-Other | 0.61% | +0.61% | NEW | |
| 21 | MFA | Mfa Financial INC | Stock-Other | 0.58% | +0.58% | NEW | |
| 22 | MTZ | Mastec INC | Stock-Industrials | 0.56% | +0.38% | -58.62% | |
| 23 | RWT 7.75 06-15-27 | Redwood Trust INC | Stock-Other | 0.53% | — | — | |
| 24 | RDFN 0.5 04-01-27 | Redfin CORP | Stock-Other | 0.46% | — | — | |
| 25 | LECO | Lincoln Electric Holdings | Stock-Industrials | 0.43% | +0.21% | -62.50% | |
| 26 | RRC | Range Resources CORP | Stock-Energy | 0.39% | — | -82.95% | |
| 27 | EQT | Eqt CORP | Stock-Energy | 0.37% | — | — | |
| 28 | DX | Dynex Capital INC | Stock-Other | 0.35% | +0.35% | NEW | |
| 29 | SOLS | Solstice Adv Materials INC | Stock-Materials | 0.33% | +0.33% | NEW | |
| 30 | PMT 8.5 06-01-29 | Pennymac CORP | Stock-Other | 0.30% | — | — | |
| 31 | IGV | Ishares Expanded Tech-softwa | ETF-Tech | 0.29% | +0.29% | -75.00% | |
| 32 | WMT | Walmart INC | Stock-Consumer Staples | 0.26% | — | — | |
| 33 | IEI | Ishares 3-7 Year Treasury Bo | ETF-Gov Bonds | 0.26% | — | — | |
| 34 | HYG | Ishr Ibx Usd Hiyld Cb Etf-ui | ETF-High Yield | 0.25% | — | +41.56% | |
| 35 | LGN | Legence Corp-cl A | Stock-Other | 0.24% | — | +50.00% | |
| 36 | MCHP | Microchip Technology INC | Stock-Tech | 0.24% | — | — | |
| 37 | FSK | Fs Kkr Capital CORP | Stock-Financials | 0.24% | — | +64.71% | |
| 38 | WIX | Wix.com Ltd. | Stock-Tech | 0.23% | — | — | |
| 39 | MTSI | Macom Technology Solutions H | Stock-Tech | 0.19% | — | — | |
| 40 | WING | Wingstop INC | Stock-Consumer Disc | 0.19% | — | — | |
| 41 | BLDR | Builders Firstsource INC | Stock-Industrials | 0.19% | — | +15.00% | |
| 42 | PWR | Quanta Services INC | Stock-Industrials | 0.17% | — | — | |
| 43 | LEN | Lennar Corp-a | Stock-Consumer Disc | 0.16% | — | +111.11% | |
| 44 | COHR | Coherent CORP | Stock-Tech | 0.15% | — | — | |
| 45 | LUMN | Lumen Technologies INC | Stock-Comm Services | 0.15% | — | — | |
| 46 | CCK | Crown Holdings INC | Stock-Consumer Disc | 0.15% | — | +300.00% | |
| 47 | DHI | Dr Horton INC | Stock-Consumer Disc | 0.14% | — | +73.98% | |
| 48 | AES | Aes CORP | Stock-Utilities | 0.14% | — | — | |
| 49 | NE | Noble Corporation plc | Stock-Energy | 0.14% | — | — | |
| 50 | TLN | Talen Energy CORP | Stock-Utilities | 0.12% | +0.01% | +1100.00% |
Performance for Q3 2026
+8.5%
Performance Last 4 Quarters
+26.2%
Based on 18% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 108 | $345.9M | 100 | |
| 2025-12-31 | 111 | $1.7B | 100 | |
| 2025-09-30 | 76 | $330.6M | 100 | |
| 2025-06-30 | 66 | $281.7M | 0 | |
| 2025-03-31 | 36 | $254.2M | 14 | |
| 2024-12-31 | 46 | $504.6M | 0 | |
| 2024-09-30 | 31 | $371.3M | 0 | |
| 2024-06-30 | 22 | $462.9M | 0 | |
| 2024-03-31 | 28 | $321.9M | 0 | |
| 2023-12-31 | 27 | $370.2M | 0 | |
| 2023-03-31 | 24 | $3.3M | 0 | |
| 2022-12-31 | 93 | $34.2M | 0 | |
| 2022-09-30 | 183 | $89.7M | 0 | |
| 2022-06-30 | 191 | $94.8M | 0 | |
| 2022-03-31 | 168 | $79.6M | 0 | |
| 2021-12-31 | 187 | $236.4M | 0 | |
| 2021-09-30 | 124 | $36.9M | 0 | |
| 2021-06-30 | 119 | $46.1M | 100 | |
| 2021-03-31 | 74 | $40.8M | 88 | |
| 2020-12-31 | 52 | $49.3M | 62 | |
| 2020-09-30 | 38 | $36.1M | 47 | |
| 2020-06-30 | 44 | $27.7M | 47 | |
| 2020-03-31 | 71 | $29.4M | 100 | |
| 2019-12-31 | 126 | $89.1M | 48 | |
| 2019-09-30 | 83 | $64.3M | 49 | |
| 2019-06-30 | 65 | $56.8M | 40 | |
| 2019-03-31 | 81 | $74.1M | 69 | |
| 2018-12-31 | 110 | $71.7M | 54 | |
| 2018-09-30 | 75 | $49.2M | 67 | |
| 2018-06-30 | 63 | $46.5M | 100 | |
| 2018-03-31 | 61 | $101.5M | 89 | |
| 2017-12-31 | 95 | $239.0M | 69 | |
| 2017-09-30 | 59 | $160.7M | 58 | |
| 2017-06-30 | 62 | $182.8M | 76 | |
| 2017-03-31 | 71 | $170.3M | 60 | |
| 2016-12-31 | 96 | $186.7M | 87 | |
| 2016-09-30 | 80 | $194.0M | 98 | |
| 2016-06-30 | 141 | $296.0M | 70 | |
| 2016-03-31 | 174 | $362.5M | 55 | |
| 2015-12-31 | 201 | $450.1M | 51 | |
| 2015-09-30 | 196 | $495.6M | 62 | |
| 2015-06-30 | 212 | $391.1M | 62 | |
| 2015-03-31 | 177 | $372.5M | 82 | |
| 2014-12-31 | 235 | $588.2M | 62 | |
| 2014-09-30 | 247 | $482.9M | 48 | |
| 2014-06-30 | 241 | $518.1M | 52 | |
| 2014-03-31 | 211 | $455.1M | 90 | |
| 2013-12-31 | 338 | $666.0M | 100 | |
| 2013-09-30 | 267 | $391.2M | 100 | |
| 2013-06-30 | 191 | $241.5M | — |
Mariner Investment Group LLC's most significant position changes for 2026-03-31: Sold out: Microsoft CORP (MSFT); Sold out: Lam Research CORP (LRCX); Sold out: Alphabet Inc-cl C (GOOG); Sold out: Costco Wholesale CORP (COST); Sold out: Cisco Systems INC (CSCO).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | IBIT | Ishares Bitcoin Trust ETF | +28.5% | +45.79% | Add |
| 2 | BABA 0.5 06-01-31 | Alibaba Group Holding | +8.7% | +66.67% | Add |
| 3 | FLR 1.125 08-15-29 | Fluor CORP | +8% | +66.23% | Add |
| 4 | SNOW 0 10-01-27 | Snowflake INC | +4.7% | +200.00% | Add |
| 5 | RITM | Rithm Capital CORP | +3.1% | +53.40% | Add |
| 6 | ON 0.5 03-01-29 | On Semiconductor CORP | +3% | +25.00% | Add |
| 7 | SHY | Ishares 1-3 Year Treasury Bo | +1.8% | +2776.21% | Add |
| 8 | SPY | Ss Spdr S&p 500 ETF Trust-us | +1.7% | +1008.00% | Add |
| 9 | CIM | Chimera Investment CORP | +1.2% | +30.65% | Add |
| 10 | CAT | Caterpillar INC | +0.8% | -78.00% | Trim |
| 11 | RWT | Redwood Trust INC | +0.7% | -26.16% | Trim |
| 12 | AERO | Grupo Aeromexico Sab De Cv | +0.5% | — | Unchanged |
| 13 | MTZ | Mastec INC | +0.4% | -58.62% | Trim |
| 14 | IGV | Ishares Expanded Tech-softwa | +0.3% | -75.00% | Trim |
| 15 | LECO | Lincoln Electric Holdings | +0.2% | -62.50% | Trim |
| 16 | TLN | Talen Energy CORP | 0% | +1100.00% | Add |
| 17 | LYB | LyondellBasell Industries N.V. | -0.1% | -52.00% | Trim |
| 18 | VST | Vistra CORP | -0.1% | -37.50% | Trim |
| 19 | MCD | Mcdonald's CORP | -2.9% | -81.60% | Trim |
| 20 | MSFT | Microsoft CORP | — | EXIT | Sold out |
| 21 | LRCX | Lam Research CORP | — | EXIT | Sold out |
| 22 | GOOG | Alphabet Inc-cl C | — | EXIT | Sold out |
| 23 | COST | Costco Wholesale CORP | — | EXIT | Sold out |
| 24 | CSCO | Cisco Systems INC | — | EXIT | Sold out |
| 25 | ASML | ASML Holding N.V. | — | EXIT | Sold out |
| 26 | TXN | Texas Instruments INC | — | EXIT | Sold out |
| 27 | NVDA | Nvidia CORP | — | EXIT | Sold out |
| 28 | LIN | Linde plc | — | EXIT | Sold out |
| 29 | INTC | Intel CORP | — | EXIT | Sold out |
| 30 | HON | Honeywell International INC | — | EXIT | Sold out |
| 31 | AAPL | Apple INC | — | EXIT | Sold out |
| 32 | MA | Mastercard INC - A | — | EXIT | Sold out |
| 33 | CTAS | Cintas CORP | — | EXIT | Sold out |
| 34 | LOW | Lowe's Cos INC | — | EXIT | Sold out |
| 35 | GPN 1.5 03-01-31 | Global Payments INC | — | NEW | New buy |
| 36 | F 0 03-15-26 | Ford Motor Company | — | EXIT | Sold out |
| 37 | IGLB | Ishares 10+ Year Inv Gr CORP | — | EXIT | Sold out |
| 38 | NEE 3 03-01-27 | Nextera Energy Capital | — | EXIT | Sold out |
| 39 | DUK | Duke Energy CORP | — | EXIT | Sold out |
| 40 | JFR | Nuveen Floating Rate Income | — | EXIT | Sold out |
| 41 | VCSH | Vanguard S/t CORP Bond ETF | — | NEW | New buy |
| 42 | PMT | Pennymac Mortgage Investment | — | NEW | New buy |
| 43 | MFA | Mfa Financial INC | — | NEW | New buy |
| 44 | FIX | Comfort Systems USA INC | — | EXIT | Sold out |
| 45 | FERG | Ferguson Enterprises INC | — | EXIT | Sold out |
| 46 | AR | Antero Resources CORP | — | EXIT | Sold out |
| 47 | CMCSA | Comcast Corp-class A | — | EXIT | Sold out |
| 48 | DX | Dynex Capital INC | — | NEW | New buy |
| 49 | SOLS | Solstice Adv Materials INC | — | NEW | New buy |
| 50 | DY | Dycom Industries INC | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-05 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-25 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-16 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-05 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-22 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-29 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-24 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-14 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-15 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-12 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-14 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-09 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-12 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-09 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-12 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-11 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-12 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-10 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-11 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-15 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-11 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-12 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-06 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-10 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-11 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-26 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-07 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-11 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-09 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-01 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-07-27 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-11 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-23 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-03 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-03 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-03 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-02 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-06 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-14 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-13 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-12 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-10 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-12 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-14 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-13 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-12 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-14 | 13F-HR | View on EDGAR |
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