13F portfolio / Investment manager
Rubric Capital
David Rosen (principal owner)
The firm is based in New York, NY, according to its SEC filings.
Its earliest 13F holdings report on SEC EDGAR was filed in February 2017.
SEC Form ADV lists David E. Rosen as owning 75% or more of the firm.
The 13F shows long US-listed stock and option positions only. It leaves out short positions, cash, bonds and most non-US holdings.
- Reported 13F value
- $10.9B
- Positions
- 87
- Est. 1-yearEstimate
- +15.5%SPY +15.7%
- Est. 3-year, annualizedEstimate
- +28.8%SPY +22.8%
As of Jun 30, 2026 · filed Aug 14, 2026
Holdings
18 new · 35 added · 10 trimmed · 24 unchanged · 13 sold out
| 1 | TLN on Yahoo Finance (opens in a new tab) | Talen Energy CorpCOM | 12.7% | $1.4B | 3,602,171 | Unchanged | $138.87 | $354.11 | +155.0% |
| 2 | FTAI on Yahoo Finance (opens in a new tab) | Ftai Aviation LtdSHS | 7.4% | $812M | 3,000,000 | Added +16.5% | $138.56 | $166.76 | +20.3% |
| 3 | VTRS on Yahoo Finance (opens in a new tab) | Viatris IncCOM | 5.0% | $543M | 34,168,743 | Added +2.0% | $10.35 | $18.32 | +77.1% |
| 4 | TEVA on Yahoo Finance (opens in a new tab) | Teva Pharmaceutical Inds LtdSPONSORED ADS | 4.8% | $528M | 15,575,000 | Added +2.1% | $13.50* | $41.03 | +203.9% |
| 5 | GLNG on Yahoo Finance (opens in a new tab) | Golar Lng LtdSHS | 4.2% | $457M | 9,178,978 | Unchanged | $26.03* | $45.35 | +74.2% |
| 6 | VST on Yahoo Finance (opens in a new tab) | Vistra CorpCOM | 2.6% | $285M | 1,794,953 | Added +19.7% | $176.78 | $153.35 | -13.3% |
| 7 | TAC on Yahoo Finance (opens in a new tab) | Transalta CorpCOM | 2.6% | $280M | 20,232,011 | Added +13.8% | $10.57* | $12.85 | +21.5% |
| 8 | FLR on Yahoo Finance (opens in a new tab) | Fluor CorpCOM | 2.4% | $263M | 5,017,248 | New | $48.96 | $47.07 | -3.9% |
| 9 | KNSA on Yahoo Finance (opens in a new tab) | Kiniksa Pharmaceuticals IntlORD SHS CL A | 2.3% | $256M | 3,999,800 | Added +6.7% | $24.96 | $77.78 | +211.7% |
| 10 | BGC on Yahoo Finance (opens in a new tab) | BGC Group IncCL A | 2.3% | $254M | 23,800,000 | Added +2.1% | $6.35* | $11.48 | +80.6% |
| 11 | ZM on Yahoo Finance (opens in a new tab) | Zoom Communications IncCL A | 2.2% | $239M | 2,766,009 | Added +176.3% | $90.63 | $93.82 | +3.5% |
| 12 | GIL on Yahoo Finance (opens in a new tab) | Gildan Activewear IncCOM | 2.1% | $232M | 4,500,000 | Added +222.4% | $58.73 | $41.34 | -29.6% |
| 13 | ARQT on Yahoo Finance (opens in a new tab) | Arcutis Biotherapeutics IncCOM | 2.0% | $217M | 8,271,577 | Unchanged | $7.02* | $28.48 | +305.5% |
| 14 | AMZN on Yahoo Finance (opens in a new tab) | Amazon Com IncCOM | 2.0% | $215M | 900,000 | New | $251.01 | $249.20 | -0.7% |
| 15 | ROIV on Yahoo Finance (opens in a new tab) | Roivant Sciences LtdSHS | 1.9% | $212M | 6,000,000 | Added +20.0% | $13.88* | $33.43 | +140.9% |
| 16 | ZYME on Yahoo Finance (opens in a new tab) | Zymeworks IncCOM | 1.7% | $183M | 7,000,000 | Unchanged | $12.98* | $25.40 | +95.7% |
| 17 | AMCR on Yahoo Finance (opens in a new tab) | Amcor PLCCOM NEW | 1.7% | $180M | 4,162,030 | Added +227.9% | $39.89 | $43.74 | +9.7% |
| 18 | CMPR on Yahoo Finance (opens in a new tab) | Cimpress PLCSHS EURO | 1.6% | $178M | 1,750,000 | Added +7.4% | $57.73 | $75.78 | +31.3% |
| 19 | AMRX on Yahoo Finance (opens in a new tab) | Amneal Pharmaceuticals IncCOM STK CL A | 1.6% | $176M | 10,168,660 | Trimmed -7.9% | $5.14* | $18.97 | +268.8% |
| 20 | NRIX on Yahoo Finance (opens in a new tab) | Nurix Therapeutics IncCOM | 1.6% | $175M | 7,227,778 | Added +192.2% | $16.12 | $24.86 | +54.2% |
| 21 | MCY on Yahoo Finance (opens in a new tab) | Mercury Genl Corp NewCOM | 1.5% | $164M | 1,541,440 | Trimmed -28.5% | $54.79 | $102.15 | +86.5% |
| 22 | PFSI on Yahoo Finance (opens in a new tab) | Pennymac Finl Svcs Inc NewCOM | 1.4% | $148M | 1,700,000 | Added +3006.3% | $87.12 | $60.01 | -31.1% |
| 23 | IART on Yahoo Finance (opens in a new tab) | Integra Lifesciences Hldgs CCOM NEW | 1.3% | $139M | 7,753,934 | Unchanged | $19.34 | $13.15 | -32.0% |
| 24 | DK on Yahoo Finance (opens in a new tab) | Delek US Hldgs Inc NewCOM | 1.3% | $137M | 2,687,449 | Unchanged | $18.68 | $76.24 | +308.1% |
| 25 | LBTYA on Yahoo Finance (opens in a new tab) | Liberty Global LtdCOM CL A | 1.2% | $134M | 11,752,855 | Unchanged | $10.21 | $7.82 | -23.3% |
| 26 | MGTX on Yahoo Finance (opens in a new tab) | Meiragtx Hldgs PLCCOM | 1.1% | $123M | 9,100,000 | Added +30.0% | $7.79 | $9.30 | +19.2% |
| 27 | GEO on Yahoo Finance (opens in a new tab) | Geo Group IncCOM | 1.1% | $122M | 4,131,219 | Added +10.4% | $23.22 | $28.65 | +23.4% |
| 28 | LILAK on Yahoo Finance (opens in a new tab) | Liberty Latin America LtdCOM CL C | 1.1% | $122M | 15,645,430 | Added +1.6% | $5.19 | $8.03 | +54.7% |
| 29 | SDGR on Yahoo Finance (opens in a new tab) | Schrodinger IncCOM | 1.0% | $104M | 6,400,000 | Added +6.7% | $19.55 | $22.69 | +16.1% |
| 30 | ECVT on Yahoo Finance (opens in a new tab) | Ecovyst IncCOM | 0.9% | $102M | 8,211,888 | Trimmed -10.1% | $8.01 | $10.09 | +26.0% |
| 31 | LBTYK on Yahoo Finance (opens in a new tab) | Liberty Global LtdCOM CL C | 0.9% | $102M | 9,259,361 | Unchanged | $10.59 | $7.66 | -27.7% |
| 32 | COMP on Yahoo Finance (opens in a new tab) | Compass IncCL A | 0.9% | $101M | 8,218,394 | Added +119.3% | $8.69 | $8.99 | +3.5% |
| 33 | NWL on Yahoo Finance (opens in a new tab) | Newell Brands IncCOM | 0.9% | $98M | 16,000,000 | Added +4.9% | $5.04 | $5.64 | +12.1% |
| 34 | EPC on Yahoo Finance (opens in a new tab) | Edgewell Personal Care CoCOM | 0.9% | $95M | 3,544,465 | Trimmed -11.4% | $19.34 | $27.72 | +43.3% |
| 35 | CXW on Yahoo Finance (opens in a new tab) | Corecivic IncCOM | 0.8% | $87M | 2,847,436 | Added +38.3% | $21.23 | $30.57 | +44.0% |
| 36 | ARDX on Yahoo Finance (opens in a new tab) | Ardelyx IncCOM | 0.8% | $83M | 16,202,700 | Added +770.7% | $6.16 | $3.11 | -49.5% |
| 37 | ENOV on Yahoo Finance (opens in a new tab) | Enovis CorporationCOM | 0.7% | $81M | 3,900,000 | Added +59.0% | $27.82 | $19.64 | -29.4% |
| 38 | ADMA on Yahoo Finance (opens in a new tab) | Adma Biologics IncCOM | 0.7% | $78M | 9,339,414 | Added +416.2% | $10.41 | $10.66 | +2.5% |
| 39 | MNKD on Yahoo Finance (opens in a new tab) | Mannkind CorpCOM NEW | 0.7% | $77M | 18,000,000 | Added +397.2% | $3.48 | $3.03 | -12.8% |
| 40 | DRVN on Yahoo Finance (opens in a new tab) | Driven Brands Hldgs IncCOM | 0.7% | $74M | 5,300,613 | Added +76.7% | $13.68 | $11.88 | -13.2% |
| 41 | OPK on Yahoo Finance (opens in a new tab) | Opko Health IncCOM | 0.7% | $72M | 47,791,243 | Unchanged | $1.28 | $1.58 | +22.8% |
| 42 | AVO on Yahoo Finance (opens in a new tab) | Mission Produce IncCOM | 0.6% | $71M | 5,981,953 | Added +246.5% | $12.83 | $12.01 | -6.4% |
| 43 | ADEA on Yahoo Finance (opens in a new tab) | Adeia IncCOM | 0.6% | $70M | 2,126,633 | Trimmed -50.4% | $9.55* | $20.76 | +117.3% |
| 44 | RNW on Yahoo Finance (opens in a new tab) | Renew Energy Global PLCCL A SHS | 0.6% | $69M | 11,000,000 | Unchanged | $5.90* | $6.88 | +16.6% |
| 45 | SSYS on Yahoo Finance (opens in a new tab) | Stratasys LtdSHS | 0.6% | $68M | 8,000,000 | Unchanged | $11.16* | $6.91 | -38.1% |
| 46 | SPRY on Yahoo Finance (opens in a new tab) | Ars Pharmaceuticals IncCOM | 0.6% | $68M | 8,540,861 | Added +6.8% | $11.78 | $3.92 | -66.7% |
| 47 | ANDE on Yahoo Finance (opens in a new tab) | Andersons IncCOM | 0.6% | $68M | 999,559 | Added +16.8% | $51.75 | $65.60 | +26.7% |
| 48 | PRMB on Yahoo Finance (opens in a new tab) | Primo Brands CorporationCLASS A COM SHS | 0.6% | $65M | 2,672,231 | Trimmed -4.0% | $18.11 | $19.44 | +7.4% |
| 49 | SON on Yahoo Finance (opens in a new tab) | Sonoco Prods CoCOM | 0.6% | $64M | 1,143,562 | New | $50.59 | $49.62 | -1.9% |
| 50 | STUB on Yahoo Finance (opens in a new tab) | Stubhub Hldgs IncCL A | 0.6% | $64M | 5,000,000 | New | $8.83 | $5.76 | -34.8% |
| 51 | GLXY on Yahoo Finance (opens in a new tab) | Galaxy Digital Inc.CL A | 0.6% | $64M | 2,343,169 | New | $27.84 | $16.51 | -40.7% |
| 52 | VG on Yahoo Finance (opens in a new tab) | Venture Global IncCOM CL A | 0.6% | $60M | 5,410,280 | Added +260.7% | $12.07 | $12.24 | +1.5% |
| 53 | ESTA on Yahoo Finance (opens in a new tab) | Establishment Labs Hldgs IncCOM | 0.5% | $59M | 688,325 | New | $71.84 | $59.58 | -17.1% |
| 54 | QDEL on Yahoo Finance (opens in a new tab) | Quidelortho CorpCOM | 0.5% | $58M | 3,306,281 | Unchanged | $49.49* | $13.15 | -73.4% |
| 55 | ALVO on Yahoo Finance (opens in a new tab) | AlvotechORDINARY SHARES | 0.5% | $58M | 15,677,093 | New | $3.57 | $4.97 | +38.9% |
| 56 | TH on Yahoo Finance (opens in a new tab) | Target Hospitality CorpCOM | 0.5% | $53M | 2,586,389 | Added +18.1% | $9.39 | $15.28 | +62.8% |
| 57 | DNOW on Yahoo Finance (opens in a new tab) | Dnow IncCOM | 0.5% | $51M | 3,898,635 | Added +207.6% | $13.16 | $15.47 | +17.5% |
| 58 | PRTA on Yahoo Finance (opens in a new tab) | Prothena Corp PLCSHS | 0.4% | $49M | 5,000,000 | Unchanged | $9.14 | $8.39 | -8.2% |
| 59 | TRVI on Yahoo Finance (opens in a new tab) | Trevi Therapeutics IncCOM | 0.4% | $47M | 2,504,513 | Trimmed -32.5% | $4.18* | $11.85 | +183.7% |
| 60 | COLL on Yahoo Finance (opens in a new tab) | Collegium Pharmaceutical IncCOM | 0.4% | $46M | 1,279,611 | Unchanged | $29.31* | $22.91 | -21.8% |
| 61 | ABUS on Yahoo Finance (opens in a new tab) | Arbutus Biopharma CorpCOM | 0.3% | $36M | 7,532,937 | Added +13.7% | $4.09 | $4.24 | +3.8% |
| 62 | VGNT on Yahoo Finance (opens in a new tab) | Versigent PLCORDINARY SHARES | 0.3% | $36M | 855,163 | New | $39.74 | $44.62 | +12.3% |
| 63 | XPER on Yahoo Finance (opens in a new tab) | Xperi IncCOMMON STOCK | 0.3% | $34M | 4,143,744 | Unchanged | $10.56* | $5.01 | -52.5% |
| 64 | OFIX on Yahoo Finance (opens in a new tab) | Orthofix Med IncCOM | 0.3% | $34M | 3,721,715 | Unchanged | $14.61* | $9.36 | -35.9% |
| 65 | TRIP on Yahoo Finance (opens in a new tab) | Tripadvisor IncCOM | 0.3% | $33M | 2,439,110 | New | $11.31 | $9.23 | -18.4% |
| 66 | MATV on Yahoo Finance (opens in a new tab) | Mativ Holdings IncCOM | 0.3% | $30M | 3,982,442 | Unchanged | $13.57* | $11.18 | -17.6% |
| 67 | LILA on Yahoo Finance (opens in a new tab) | Liberty Latin America LtdCOM CL A | 0.3% | $30M | 3,777,654 | Added +0.7% | $5.16 | $8.07 | +56.4% |
| 68 | BHVN on Yahoo Finance (opens in a new tab) | Biohaven LtdCOM | 0.2% | $26M | 1,721,493 | New | $10.76 | $10.80 | +0.3% |
| 69 | VISN on Yahoo Finance (opens in a new tab) | Vistance Networks IncCOM | 0.2% | $26M | 2,000,000 | Unchanged | $5.07 | $5.89 | +16.0% |
| 70 | ANIP on Yahoo Finance (opens in a new tab) | Ani Pharmaceuticals IncCOM | 0.2% | $21M | 258,131 | New | $80.22 | $71.79 | -10.5% |
| 71 | QURE on Yahoo Finance (opens in a new tab) | Uniqure NVSHS | 0.2% | $19M | 408,581 | New | $26.18 | $22.00 | -15.9% |
| 72 | HPP on Yahoo Finance (opens in a new tab) | Hudson Pacific Properties InCOM | 0.1% | $15M | 1,019,598 | New | $10.97 | $10.62 | -3.2% |
| 73 | SEG on Yahoo Finance (opens in a new tab) | Seaport Entmt Group IncCOMMON STOCK | 0.1% | $15M | 568,530 | Unchanged | $28.61 | $22.67 | -20.8% |
| 74 | GDS on Yahoo Finance (opens in a new tab) | GDS Hldgs LtdSPONSORED ADS | 0.1% | $15M | 485,873 | New | $38.60 | $23.30 | -39.6% |
| 75 | HRTX on Yahoo Finance (opens in a new tab) | Heron Therapeutics IncCOM | 0.1% | $13M | 30,046,828 | Unchanged | $1.22* | $0.36 | -70.3% |
| 76 | PRLB on Yahoo Finance (opens in a new tab) | Proto Labs IncCOM | 0.1% | $9M | 108,692 | Trimmed -77.7% | $38.16 | $85.24 | +123.4% |
| 77 | AERO on Yahoo Finance (opens in a new tab) | Grupo Aeromexico Sab De CvSPONSORED ADS | 0.1% | $8M | 467,129 | Unchanged | $18.15 | $16.17 | -10.9% |
| 78 | OMER on Yahoo Finance (opens in a new tab) | Omeros CorpCOM | 0.1% | $6M | 656,874 | New | $11.90 | $16.04 | +34.8% |
| 79 | EPRX on Yahoo Finance (opens in a new tab) | Eupraxia Pharmaceuticals IncCOM | 0.1% | $6M | 867,424 | Added +25.5% | $7.81 | $6.62 | -15.3% |
| 80 | EDSA on Yahoo Finance (opens in a new tab) | Edesa Biotech IncCOM NEW | 0.0% | $5M | 669,500 | Trimmed -2.6% | $2.16 | $2.60 | +20.4% |
| 81 | MREO on Yahoo Finance (opens in a new tab) | Mereo Biopharma Group PLCSPON ADS | 0.0% | $5M | 15,307,347 | Unchanged | $1.68* | $0.29 | -82.5% |
| 82 | ABEO on Yahoo Finance (opens in a new tab) | Abeona Therapeutics IncCOM NEW | 0.0% | $4M | 608,771 | New | $5.49 | $4.40 | -19.9% |
| 83 | CRI on Yahoo Finance (opens in a new tab) | Carters IncCOM | 0.0% | $4M | 86,844 | Trimmed -91.5% | $33.28 | $31.63 | -4.9% |
| 84 | TXMD on Yahoo Finance (opens in a new tab) | Therapeuticsmd IncCOM NEW | 0.0% | $3M | 1,192,191 | Unchanged | $3.35* | $1.92 | -42.8% |
| 85 | — | Opko Health IncNOTE 3.750% 1/1 | 0.0% | $2M | 1,250,000 prn | Unchanged | — | — | — |
| 86 | TTI on Yahoo Finance (opens in a new tab) | Tetra Technologies Inc DelCOM | 0.0% | $2M | 150,000 | New | $9.80 | $5.24 | -46.5% |
| 87 | — | Service Pptys TrCOM SH BEN INT | 0.0% | $2M | 900,000 | New | — | — | — |
Sold out since Q1 2026
- CEG on Yahoo Finance (opens in a new tab)Constellation Energy Corp$200M at Q1 2026
- AKAM on Yahoo Finance (opens in a new tab)Akamai Technologies Inc$149M at Q1 2026
- TDS on Yahoo Finance (opens in a new tab)Telephone & Data Sys Inc$78M at Q1 2026
- PTGX on Yahoo Finance (opens in a new tab)Protagonist Therapeutics Inc$45M at Q1 2026
- —Calavo Growers Inc$37M at Q1 2026
- TSAT on Yahoo Finance (opens in a new tab)Telesat Corp$31M at Q1 2026
- BMRN on Yahoo Finance (opens in a new tab)Biomarin Pharmaceutical Inc$25M at Q1 2026
- INDV on Yahoo Finance (opens in a new tab)Indivior Pharmaceuticals Inc$20M at Q1 2026
- ACHC on Yahoo Finance (opens in a new tab)Acadia Healthcare Company In$20M at Q1 2026
- CPRI on Yahoo Finance (opens in a new tab)Capri Holdings Limited$12M at Q1 2026
- EMBC on Yahoo Finance (opens in a new tab)Embecta Corp$9M at Q1 2026
- HELE on Yahoo Finance (opens in a new tab)Helen Of Troy Ltd$5M at Q1 2026
- —Playstudios Inc$1M at Q1 2026
Estimated, from reported holdings
Quarter by quarter
High-conviction buys (new positions at 3% or more of the portfolio) since Q3 2023: 5. Of 4 with six months of history, 75.0% beat the S&P 500 from the filing date.
Source: SEC Form 13F-HR 0001104659-26-097098, compared with the Q1 2026 report. 0 option rows are excluded from weights. Tickers map from CUSIP via OpenFIGI. Estimated returns weight each position’s next-quarter total return (Yahoo Finance adjusted closes) by its quarter-end value and assume no trades. Estimated cost averages daily adjusted closes in each quarter the share count rose, from Q3 2023 onward (* = held at the start of our data). Price is the latest close.
Important information
Form 13F data is delayed. Managers have up to 45 days after each calendar quarter to file, so holdings shown may have changed materially since the report date. 13F reports cover long positions in US-listed equities and certain other securities only; they exclude short positions, most non-US holdings, cash, bonds and private investments, and managers may request confidential treatment for some positions. Options rows are listed in filings but are not counted in the holdings and weights shown here.
Estimated holdings returns, estimated cost and high-conviction results are hypothetical calculations from quarter-end holdings and public prices, assuming no trades between reports. They are not the actual returns or costs of any fund or manager and do not reflect fees, trading, leverage, shorts or cash. Biographies are drawn from cited public sources. This page is for information only and is not individualized investment advice or a recommendation to buy or sell any security. Gulfstream Capital and its clients may hold positions in securities shown.