MARINER INVESTMENT GROUP LLC
Follow13F filer, CIK 1096978, NEW YORK, NY
MARINER INVESTMENT GROUP LLC reported $345,879,159 across 108 holdings for the quarter ended 2026-03-31, in a 13F-HR filed 2026-05-05. Its ten largest share positions make up 82.11% of the portfolio.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001096978-26-000005
- Period
- 2026-03-31
- Reported value
- $346M
- Holdings
- 108
- Top 10 weight
- 82.11%
- New
- 51
- Sold out
- 54
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| IBITadded | +982,816 | $37.8M |
| SHYadded | +73,181 | $6.04M |
| RITMadded | +463,872 | $4.4M |
| VCSHnew | +52,321 | $4.15M |
| CATnew | +3,800 | $2.69M |
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 |
|---|---|---|
| MSFTexited | -344,000 | -$166M |
| LRCXexited | -736,000 | -$126M |
| GOOGexited | -350,000 | -$110M |
| COSTexited | -125,000 | -$108M |
| CSCOexited | -1,372,000 | -$106M |
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, Q1 2026
Share positions as resolved from 13F-HR 0001096978-26-000005, largest first. % of portfolio is the value over $329,885,088, 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 | 3,129,352 | $120M | 36.45% | +982,816 | Timeline | ||
| RITMRITHM CAPITAL CORP | 1,332,583 | $12.6M | 3.83% | +463,872 | Timeline | ||
| FOURSHIFT4 PMTS INC | 145,000 | $6.34M | 1.92% | +20,000 | Timeline | ||
| SHYISHARES TR | 75,817 | $6.26M | 1.9% | +73,181 | Timeline | ||
| CIMCHIMERA INVT CORP | 378,899 | $4.76M | 1.44% | +88,899 | Timeline | ||
| ETRENTERGY CORP NEW | 40,000 | $4.49M | 1.36% | -5,000 | Timeline | ||
| VCSHVANGUARD SCOTTSDALE FDS | 52,321 | $4.15M | 1.26% | new | Timeline | ||
| WMBWILLIAMS COS INC | 45,000 | $3.28M | 0.99% | 0 | Timeline | ||
| RWTREDWOOD TRUST INC | 550,361 | $3.09M | 0.94% | -194,985 | Timeline | ||
| CATCATERPILLAR INC | 3,800 | $2.69M | 0.82% | new | Timeline | ||
| AEROGRUPO AEROMEXICO SAB DE CV | 169,280 | $2.37M | 0.72% | 0 | Timeline | ||
| PMTPENNYMAC MTG INVT TR | 180,000 | $2.1M | 0.64% | new | Timeline | ||
| MFAMFA FINL INC | 210,000 | $2.01M | 0.61% | new | Timeline | ||
| MTZMASTEC INC | 6,000 | $1.93M | 0.59% | -8,500 | Timeline | ||
| LECOLINCOLN ELEC HLDGS INC | 6,000 | $1.49M | 0.45% | -10,000 | Timeline | ||
| RRCRANGE RES CORP | 30,000 | $1.36M | 0.41% | -16,000 | Timeline | ||
| EQTEQT CORP | 20,000 | $1.27M | 0.39% | 0 | Timeline | ||
| DXDYNEX CAP INC | 95,000 | $1.21M | 0.37% | new | Timeline | ||
| SOLSSOLSTICE ADVANCED MATLS INC | 15,000 | $1.14M | 0.35% | new | Timeline | ||
| IGVISHARES TR | 12,500 | $1M | 0.3% | new | Timeline | ||
| IEIISHARES TR | 7,638 | $906K | 0.27% | new | Timeline | ||
| WMTWALMART INC | 7,264 | $903K | 0.27% | new | Timeline | ||
| LGNLEGENCE CORP | 15,000 | $847K | 0.26% | +5,000 | Timeline | ||
| MCHPMICROCHIP TECHNOLOGY INC. | 13,000 | $840K | 0.25% | new | Timeline | ||
| WIXWIX COM LTD | 9,000 | $811K | 0.25% | new | Timeline | ||
| MTSIMACOM TECH SOLUTIONS HLDGS I | 3,000 | $666K | 0.2% | new | Timeline | ||
| LUMNLUMEN TECHNOLOGIES INC | 75,000 | $521K | 0.16% | 0 | Timeline | ||
| CCKCROWN HLDGS INC | 5,000 | $501K | 0.15% | 0 | Timeline | ||
| AESAES CORP | 35,000 | $493K | 0.15% | new | Timeline | ||
| NENOBLE CORP PLC | 10,000 | $491K | 0.15% | 0 | Timeline | ||
| WOLFWOLFSPEED INC | 25,000 | $408K | 0.12% | +5,000 | Timeline | ||
| KRMNKARMAN HLDGS INC | 5,000 | $400K | 0.12% | new | Timeline | ||
| TWOTWO HARBORS INVENTMENT CORPO | 32,776 | $374K | 0.11% | new | Timeline | ||
| MITTTPG MTG INVTS TR INC | 48,094 | $352K | 0.11% | new | Timeline | ||
| XPROEXPRO GROUP HOLDINGS NV | 20,000 | $348K | 0.11% | 0 | Timeline | ||
| PKGPACKAGING CORP AMER | 1,500 | $318K | 0.1% | new | Timeline | ||
| CORZCORE SCIENTIFIC INC NEW | 20,000 | $299K | 0.09% | new | Timeline | ||
| PMTSCPI CARD GROUP INC | 18,050 | $262K | 0.08% | new | Timeline | ||
| TDSTELEPHONE & DATA SYS INC | 5,000 | $210K | 0.06% | 0 | Timeline | ||
| IHRTIHEARTMEDIA INC | 63,178 | $184K | 0.06% | new | Timeline | ||
| WINGWINGSTOP INC | 1,000 | $155K | 0.05% | new | Timeline | ||
| AOMRANGEL OAK MORTGAGE REIT INC | 17,754 | $146K | 0.04% | new | Timeline | ||
| BRLSWBOREALIS FOODS INC | 23,300 | $1.81K | <0.01% | 0 | Timeline | ||
| CYCUWCYCURION INC | 30,000 | $618 | <0.01% | 0 | Timeline |
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 |
|---|---|---|---|---|
| SPYSTATE STR SPDR S&P 500 ETF T SHS | put | 755,000 | $5.13M | +680,000 |
| HYGISHARES TR IBOXX HI YD ETF | put | 2,121,300 | $873K | +625,300 |
| FSKFS KKR CAP CORP COM | put | 700,000 | $832K | +275,000 |
| SPYSTATE STR SPDR S&P 500 ETF T SHS | call | 630,000 | $681K | +580,000 |
| BLDRBUILDERS FIRSTSOURCE INC Stock | put | 115,000 | $650K | +15,000 |
| PWRQUANTA SVCS INC COM | call | 30,000 | $586K | new |
| LENLENNAR CORP Stock | put | 123,500 | $551K | +65,000 |
| COHRCOHERENT CORP Stock | call | 42,500 | $536K | new |
| WINGWINGSTOP INC Stock | put | 32,500 | $499K | new |
| DHID R HORTON INC Stock | put | 107,000 | $493K | +45,500 |
| FOURSHIFT4 PMTS INC Stock | call | 180,000 | $488K | new |
| TLNTALEN ENERGY CORP Stock | call | 60,000 | $429K | new |
| CCOICOGENT COMM HOLDINGS INC COM NEW | put | 105,000 | $394K | 0 |
| BXSLBLACKSTONE SECD LENDING FD COMMON STOCK | put | 325,000 | $384K | +200,000 |
| APHAMPHENOL CORP COM | put | 50,000 | $315K | new |
| EWYISHARES INC MSCI STH KOR ETF | put | 50,000 | $262K | new |
| GLWCORNING INC COM | call | 30,000 | $209K | -170,000 |
| OLNOLIN CORP COM PAR $1 | put | 236,000 | $170K | +36,000 |
| FOURSHIFT4 PMTS INC Stock | put | 145,000 | $167K | new |
| PHMPULTE GROUP INC Stock | put | 33,500 | $164K | new |
| POSTPOST HLDGS INC COM | put | 75,000 | $159K | 0 |
| WMBWILLIAMS COS INC Stock | call | 50,000 | $155K | -100,000 |
| QQNITY ELECTRONICS INC Stock | call | 50,000 | $141K | new |
| IPINTERNATIONAL PAPER CO Stock | put | 100,000 | $138K | 0 |
| GBDCGOLUB CAP BDC INC COM | put | 200,000 | $130K | new |
| DEDEERE & CO COM | put | 10,000 | $128K | new |
| CARRCARRIER GLOBAL CORPORATION Stock | put | 75,000 | $124K | +25,000 |
| LYBLYONDELLBASELL INDUSTRIES NV Stock | put | 240,000 | $110K | -260,000 |
| JETSETF SER SOLUTIONS ETF | call | 200,000 | $104K | new |
| BKLNINVESCO EXCH TRADED FD TR II SR LN ETF | put | 1,000,000 | $100K | new |
| KHCKRAFT HEINZ CO Stock | put | 200,000 | $91K | new |
| ENTGENTEGRIS INC Stock | call | 25,000 | $90K | new |
| DOWDOW HLDGS INC Stock | put | 205,000 | $69.8K | -345,000 |
| DVNDEVON ENERGY CORP NEW Stock | put | 300,000 | $58K | new |
| HWMHOWMET AEROSPACE INC Stock | put | 25,000 | $53.8K | 0 |
| VSTVISTRA CORP Stock | call | 25,000 | $48.8K | -10,000 |
| CATCATERPILLAR INC COM | call | 5,000 | $48.1K | -35,000 |
| UALUNITED AIRLS HLDGS INC Stock | put | 25,000 | $41K | -50,000 |
| SWSMURFIT WESTROCK PLC Stock | put | 50,000 | $37.5K | 0 |
| FITBFIFTH THIRD BANCORP Stock | put | 25,000 | $35.6K | new |
| OCSLOAKTREE SPECIALTY LENDING COM | put | 200,000 | $35K | new |
| JEFJEFFERIES FINANCIAL GROUP IN COM | put | 25,000 | $33.8K | new |
| COPCONOCOPHILLIPS COM | put | 100,000 | $29.5K | +50,000 |
| PAASPAN AMERN SILVER CORP COM | call | 25,000 | $29.4K | new |
| APAAPA CORPORATION Stock | put | 200,000 | $27K | new |
| MCDMCDONALDS CORP COM | call | 30,000 | $26.7K | new |
| ITAISHARES TR SHS | put | 10,000 | $26K | new |
| USOUNITED STS OIL FD LP COM | call | 200,000 | $26K | new |
| CEGCONSTELLATION ENERGY CORP Stock | call | 10,000 | $19K | -20,000 |
| KRESPDR SERIES TRUST ST STR SP REGBNK | put | 20,000 | $18.6K | new |
| CCKCROWN HLDGS INC Stock | call | 15,000 | $16.5K | new |
| DALDELTA AIR LINES INC Stock | put | 25,000 | $15.9K | -25,000 |
| WMTWALMART INC COM | call | 22,700 | $13.3K | new |
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 |
|---|---|---|---|---|
| ALIBABA GROUP HLDG LTDALIBABA GROUP HLDG LTD NOTE 0.500% 6/0 | principal | 25,000,000 | $34.7M | +10,000,000 |
| FLUOR CORPFLUOR CORP NOTE 1.125% 8/1 | principal | 25,100,000 | $31M | +10,000,000 |
| GLOBAL PMTS INCGLOBAL PMTS INC NOTE 1.500% 3/0 | principal | 25,000,000 | $22.1M | new |
| SNOWFLAKE INCSNOWFLAKE INC NOTE 10/0 | principal | 15,000,000 | $17.7M | +10,000,000 |
| ON SEMICONDUCTOR CORPON SEMICONDUCTOR CORP NOTE 0.500% 3/0 | principal | 12,500,000 | $12.2M | +2,500,000 |
| LIVE NATION ENTERTAINMENT INLIVE NATION ENTERTAINMENT IN NOTE 3.125% 1/1 | principal | 5,000,000 | $7.61M | 0 |
| LIVE NATION ENTERTAINMENT INLIVE NATION ENTERTAINMENT IN Convertible | principal | 5,000,000 | $5.4M | 0 |
| REDWOOD TRUST INCREDWOOD TRUST INC Convertible | principal | 1,800,000 | $1.83M | 0 |
| REDFIN CORPREDFIN CORP NOTE 0.500% 4/0 | principal | 1,645,000 | $1.58M | 0 |
| PENNYMAC CORPPENNYMAC CORP Convertible Bond | principal | 1,000,000 | $1.05M | 0 |
| WOLFSPEED INCWOLFSPEED INC NOTE 2.500% 6/1 | principal | 271,000 | $388K | 0 |
Sold out in Q1 2026
Positions in the previous quarter's report that this quarter's report no longer lists.
| Security | Shares before | Value before | Type |
|---|---|---|---|
| MSFTMICROSOFT CORP | 344,000 | $166M | shares |
| LRCXLAM RESEARCH CORP | 736,000 | $126M | shares |
| GOOGALPHABET INC | 350,000 | $110M | shares |
| COSTCOSTCO WHOLESALE CORPORATION | 125,000 | $108M | shares |
| CSCOCISCO SYS INC | 1,372,000 | $106M | shares |
| ASMLASML HLDG NV | 93,000 | $99.5M | shares |
| TXNTEXAS INSTRS INC | 559,000 | $97M | shares |
| NVDANVIDIA CORPORATION | 497,000 | $92.7M | shares |
| LINLINDE PLC | 200,000 | $85.3M | shares |
| INTCINTEL CORP | 2,200,000 | $81.2M | shares |
| HONHONEYWELL INTL INC | 392,000 | $76.5M | shares |
| AAPLAPPLE INC | 248,000 | $67.4M | shares |
| MAMASTERCARD INCORPORATED | 100,000 | $57.1M | shares |
| CTASCINTAS CORP | 269,000 | $50.6M | shares |
| MCDMCDONALDS CORP | 163,000 | $49.8M | shares |
| LOWLOWES COS INC | 101,000 | $24.4M | shares |
| FORD MOTOR COMPANYFORD MOTOR COMPANY | 20,000,000 | $20.8M | principal |
| IGLBISHARES TR | 400,000 | $20.2M | shares |
| NEXTERA ENERGY CAP HLDGS INCNEXTERA ENERGY CAP HLDGS INC | 10,000,000 | $12.4M | principal |
| DUKDUKE ENERGY CORP NEW | 51,250 | $6.01M | shares |
| JFRNUVEEN FLOATING RATE INCOME | 633,488 | $4.96M | shares |
| TLNTALEN ENERGY CORP | 5,000 | $1.87M | shares |
| FIXCOMFORT SYS USA INC | 2,000 | $1.87M | shares |
| FERGFERGUSON ENTERPRISES INC | 6,000 | $1.34M | shares |
| ARANTERO RESOURCES CORP | 38,500 | $1.33M | shares |
| CMCSACOMCAST CORP NEW | 42,500 | $1.27M | shares |
| DYDYCOM INDS INC | 3,000 | $1.01M | shares |
| KRKROGER CO | 15,000 | $937K | shares |
| VSTVISTRA CORP | 5,000 | $807K | shares |
| VMIVALMONT INDS INC | 2,000 | $805K | shares |
| VRTVERTIV HOLDINGS CO | 75,000 | $664K | call |
| CCCHEMOURS CO | 55,000 | $648K | shares |
| MLMMARTIN MARIETTA MATLS INC | 500 | $311K | shares |
| CRDOCREDO TECHNOLOGY GROUP HOLDI | 2,000 | $288K | shares |
| VMCVULCAN MATLS CO | 1,000 | $285K | shares |
| WORWORTHINGTON ENTERPRISES INC | 4,196 | $216K | shares |
| HYGISHARES TR | 2,500 | $202K | shares |
| AVGOBROADCOM INC | 10,000 | $181K | call |
| CRWVCOREWEAVE INC | 2,000 | $143K | shares |
| OKEONEOK INC NEW | 100,000 | $128K | put |
| HALHALLIBURTON CO | 100,000 | $126K | put |
| EIMEATON VANCE MUN BD FD | 12,181 | $119K | shares |
| RRCRANGE RES CORP | 130,000 | $91K | call |
| IWMISHARES TR | 206,500 | $90.1K | put |
| QQQINVESCO QQQ TR | 50,000 | $66.8K | call |
| FMCFMC CORP | 50,000 | $66.2K | put |
| CMCSACOMCAST CORP NEW | 120,000 | $41.4K | put |
| IGVISHARES TR | 50,000 | $37.5K | put |
| DOCSDOXIMITY INC | 40,000 | $5K | put |
| CRWVCOREWEAVE INC | 25,000 | $3.88K | call |
| CCCHEMOURS CO | 50,000 | $2.5K | call |
| DUKDUKE ENERGY CORP NEW | 25,000 | $1.25K | call |
| BOLT PROJECTS HLDSBOLT PROJECTS HLDS | 19,150 | $317 | shares |
| SPYSTATE STR SPDR S&P 500 ETF T | 0 | $0 | shares |
How Q1 2026 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 0001096978-26-000005 | base | 2026-05-05 | acceptance time not in the bulk data set |