MARINER INVESTMENT GROUP LLC
Follow13F filer, CIK 1096978, NEW YORK, NY
MARINER INVESTMENT GROUP LLC reported $330,631,531 across 76 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-14. Its ten largest share positions make up 79.31% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001096978-25-000008
- Period
- 2025-09-30
- Reported value
- $331M
- Holdings
- 76
- Top 10 weight
- 79.31%
- New
- 36
- Sold out
- 26
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| IBITadded | +1,183,414 | $76.9M |
| RITMadded | +925,000 | $10.5M |
| LQDadded | +64,800 | $7.22M |
| BHFnew | +136,000 | $7.22M |
| RWTadded | +647,411 | $3.75M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Largest sells vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| SPYreduced | -90,944 | -$60.6M |
| HYGexited | -332,600 | -$26.8M |
| JFRreduced | -1,702,350 | -$13.9M |
| VOOexited | -23,310 | -$13.2M |
| GLWexited | -80,000 | -$4.21M |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Holdings, Q3 2025
Share positions as resolved from 13F-HR 0001096978-25-000008, largest first. % of portfolio is the value over $323,605,096, the sum of the share positions whose value is usable for ratios (method).
| Security | History | Shares | Value | % of portfolio | Change | Latest event | Timeline |
|---|---|---|---|---|---|---|---|
| IBITISHARES BITCOIN TRUST ETF | 2,015,094 | $131M | 40.48% | +1,183,414 | Timeline | ||
| SPYSTATE STR SPDR S&P 500 ETF T | 38,422 | $25.6M | 7.91% | -90,944 | Timeline | ||
| LQDISHARES TR | 188,000 | $21M | 6.48% | +64,800 | Timeline | ||
| JFRNUVEEN FLOATING RATE INCOME | 2,257,194 | $18.5M | 5.71% | -1,702,350 | Timeline | ||
| RITMRITHM CAPITAL CORP | 975,000 | $11.1M | 3.43% | +925,000 | Timeline | ||
| BHFBRIGHTHOUSE FINL INC | 136,000 | $7.22M | 2.23% | new | Timeline | ||
| DUKDUKE ENERGY CORP NEW | 40,000 | $4.95M | 1.53% | -10,000 | Timeline | ||
| RWTREDWOOD TRUST INC | 847,411 | $4.91M | 1.52% | +647,411 | Timeline | ||
| ETRENTERGY CORP NEW | 45,000 | $4.19M | 1.3% | -5,000 | Timeline | ||
| LECOLINCOLN ELEC HLDGS INC | 15,000 | $3.54M | 1.09% | +8,000 | Timeline | ||
| FOURSHIFT4 PMTS INC | 45,000 | $3.48M | 1.08% | new | Timeline | ||
| VSTVISTRA CORP | 15,000 | $2.94M | 0.91% | -10,000 | Timeline | ||
| CEGCONSTELLATION ENERGY CORP | 8,100 | $2.67M | 0.82% | +5,100 | Timeline | ||
| WMBWILLIAMS COS INC | 40,000 | $2.53M | 0.78% | -15,000 | Timeline | ||
| AMDADVANCED MICRO DEVICES INC | 12,500 | $2.02M | 0.62% | new | Timeline | ||
| CIMCHIMERA INVT CORP | 115,000 | $1.52M | 0.47% | new | Timeline | ||
| EIMEATON VANCE MUN BD FD | 116,847 | $1.16M | 0.36% | -83,153 | Timeline | ||
| ADARRAY DIGITAL INFRASTRUCTURE | 21,292 | $1.06M | 0.33% | -23,713 | Timeline | ||
| CCCHEMOURS CO | 55,000 | $871K | 0.27% | new | Timeline | ||
| UPSUNITED PARCEL SVCS INC | 10,000 | $835K | 0.26% | new | Timeline | ||
| VMIVALMONT INDS INC | 2,000 | $775K | 0.24% | 0 | Timeline | ||
| WOLFWOLFSPEED INC | 25,000 | $715K | 0.22% | new | Timeline | ||
| KRKROGER CO | 10,000 | $674K | 0.21% | 0 | Timeline | ||
| SVXYPROSHARES TR II | 12,500 | $637K | 0.2% | new | Timeline | ||
| RRCRANGE RES CORP | 15,000 | $565K | 0.17% | -20,000 | Timeline | ||
| LUMNLUMEN TECHNOLOGIES INC | 75,000 | $459K | 0.14% | 0 | Timeline | ||
| CRHCRH PLC | 3,000 | $360K | 0.11% | 0 | Timeline | ||
| MTZMASTEC INC | 1,600 | $340K | 0.11% | -3,400 | Timeline | ||
| SSTKSHUTTERSTOCK INC | 16,114 | $336K | 0.1% | new | Timeline | ||
| MLMMARTIN MARIETTA MATLS INC | 500 | $315K | 0.1% | 0 | Timeline | ||
| VMCVULCAN MATLS CO | 1,000 | $308K | 0.1% | 0 | Timeline | ||
| NENOBLE CORP PLC | 10,000 | $283K | 0.09% | 0 | Timeline | ||
| CRWVCOREWEAVE INC | 2,000 | $274K | 0.08% | new | Timeline | ||
| XPROEXPRO GROUP HOLDINGS NV | 20,000 | $238K | 0.07% | new | Timeline | ||
| DANDANA INC | 10,000 | $200K | 0.06% | 0 | Timeline | ||
| BRLSWBOREALIS FOODS INC | 23,300 | $1.78K | <0.01% | 0 | Timeline | ||
| CYCUWCYCURION INC | 30,000 | $1.21K | <0.01% | 0 | Timeline | ||
| BOLT PROJECTS HLDSBOLT PROJECTS HLDS | 19,150 | $766 | <0.01% | 0 |
Options
Puts and calls, as filed. The amount and value describe the underlying shares, not the option premium, so they stay out of % of portfolio (H5).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| LYBLYONDELLBASELL INDUSTRIES NV Stock | put | 200,000 | $862K | +150,000 |
| GLWCORNING INC COM | call | 200,000 | $805K | new |
| DOWDOW HLDGS INC Stock | put | 433,500 | $688K | +283,500 |
| APAAPA CORPORATION Stock | call | 100,000 | $500K | 0 |
| BLDRBUILDERS FIRSTSOURCE INC Stock | put | 100,000 | $495K | -50,000 |
| UPSUNITED PARCEL SVCS INC COM | put | 100,000 | $445K | new |
| SPYSTATE STR SPDR S&P 500 ETF T SHS | put | 335,000 | $385K | +265,000 |
| VSTVISTRA CORP Stock | call | 50,000 | $364K | 0 |
| CCOICOGENT COMM HOLDINGS INC COM NEW | put | 105,000 | $362K | new |
| RRCRANGE RES CORP Stock | call | 285,000 | $334K | -15,000 |
| FSKFS KKR CAP CORP COM | put | 200,000 | $332K | new |
| FERGFERGUSON ENTERPRISES INC Stock | call | 70,000 | $294K | new |
| OKEONEOK INC NEW COM | put | 50,000 | $175K | -100,000 |
| CMCSACOMCAST CORP NEW COM | put | 120,000 | $161K | new |
| OLNOLIN CORP COM PAR $1 | put | 100,000 | $161K | new |
| HYGISHARES TR IBOXX HI YD ETF | put | 506,400 | $124K | +90,500 |
| IGVISHARES TR SHS | put | 50,000 | $97.5K | new |
| EQNREQUINOR ASA ADR | call | 100,000 | $97.5K | new |
| TACTRANSALTA CORP COM | call | 100,000 | $60K | new |
| POSTPOST HLDGS INC COM | put | 50,000 | $55K | new |
| DOCSDOXIMITY INC Stock | put | 40,100 | $47K | new |
| WMBWILLIAMS COS INC Stock | call | 50,000 | $43.8K | new |
| CCCHEMOURS CO Stock | call | 50,000 | $40K | new |
| ARANTERO RESOURCES CORP Stock | call | 50,000 | $37.5K | new |
| XLFSELECT SECTOR SPDR TR SHS | put | 200,000 | $31K | new |
| DUKDUKE ENERGY CORP NEW COM | call | 25,000 | $20K | new |
| EIXEDISON INTL Stock | put | 22,500 | $5.06K | -30,000 |
| NVDANVIDIA CORPORATION COM | put | 100,000 | $2.5K | 0 |
Principal amounts
Notes and convertibles filed as a face amount (PRN). A face amount is never added to a share count (H6).
| Security | Type | Amount | Value | Change |
|---|---|---|---|---|
| NEXTERA ENERGY CAP HLDGS INCNEXTERA ENERGY CAP HLDGS INC NOTE 3.000% 3/0 | principal | 10,000,000 | $11.8M | new |
| JD.COM INCJD.COM INC NOTE 0.250% 6/0 | principal | 10,000,000 | $10.8M | new |
| FORD MOTOR COMPANYFORD MOTOR COMPANY NOTE 3/1 | principal | 10,000,000 | $10.2M | new |
| ALIBABA GROUP HLDG LTDALIBABA GROUP HLDG LTD NOTE 0.500% 6/0 | principal | 5,000,000 | $9.2M | new |
| SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0 | principal | 5,000,000 | $7.59M | new |
| FLUOR CORPFLUOR CORP NOTE 1.125% 8/1 | principal | 5,100,000 | $6.06M | new |
| ON SEMICONDUCTOR CORPON SEMICONDUCTOR CORP NOTE 0.500% 3/0 | principal | 5,000,000 | $4.63M | new |
| REDWOOD TRUST INCREDWOOD TRUST INC Convertible | principal | 3,300,000 | $3.31M | +2,000,000 |
| REDFIN CORPREDFIN CORP NOTE 0.500% 4/0 | principal | 1,645,000 | $1.53M | 0 |
| PENNYMAC CORPPENNYMAC CORP Convertible Bond | principal | 1,000,000 | $1.03M | new |
Sold out in Q3 2025
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| HYGISHARES TR | 332,600 | $26.8M | shares |
| VOOVANGUARD INDEX FDS | 23,310 | $13.2M | shares |
| GLWCORNING INC | 80,000 | $4.21M | shares |
| FERGFERGUSON ENTERPRISES INC | 15,000 | $3.27M | shares |
| EQTEQT CORP | 49,910 | $2.91M | shares |
| PWRQUANTA SVCS INC | 6,000 | $2.27M | shares |
| VLOVALERO ENERGY CORP | 15,000 | $2.02M | shares |
| TRGPTARGA RES CORP | 10,000 | $1.74M | shares |
| PSXPHILLIPS 66 | 10,000 | $1.19M | shares |
| ARANTERO RESOURCES CORP | 25,100 | $1.01M | shares |
| EXPEAGLE MATLS INC | 5,000 | $1.01M | shares |
| ODFLOLD DOMINION FREIGHT LINE IN | 5,750 | $933K | shares |
| CEGCONSTELLATION ENERGY CORP | 45,000 | $878K | call |
| EXEEXPAND ENERGY CORPORATION | 7,500 | $877K | shares |
| PEGPUBLIC SVC ENTERPRISE GROUP | 10,000 | $842K | shares |
| UNITI GROUP INCUNITI GROUP INC | 75,000 | $324K | shares |
| DHID R HORTON INC | 100,000 | $320K | put |
| WOLFSPEED INCWOLFSPEED INC | 1,000,000 | $258K | principal |
| CNMCORE & MAIN INC | 4,125 | $249K | shares |
| ULCCFRONTIER GROUP HLDGS INC | 60,000 | $218K | shares |
| VISNVISTANCE NETWORKS INC | 25,000 | $207K | shares |
| EQTEQT CORP | 100,000 | $155K | call |
| LENLENNAR CORP | 56,100 | $133K | put |
| TLTISHARES TR | 200,000 | $109K | call |
| CNMCORE & MAIN INC | 27,500 | $18.6K | call |
| DANDANA INC | 25,000 | $7.5K | call |
How Q3 2025 was built
Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001096978-25-000008 | base | 2025-11-14 | acceptance time not in the bulk data set |