Meiragtx HoldingsMGTX
13F holders, Q4 2025 (December 31)130holders +7
17new positions
12sold out
4famous investors
$7.95avg. 13F price*
At the end of Q4 2025, 130 institutions reported holding Meiragtx Holdings PLC (MGTX) in their 13F filings, up 7 from Q3 2025. 17 opened new positions and 12 sold out. The largest holders were Sanofi ($97.0M), Perceptive Advisors LLC ($82.1M) and Johnson & Johnson ($52.8M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Meiragtx Holdings PLC
- CUSIP
- G59665102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 17 | $10.0M |
| Exits | 12 | $2.2M |
All 13F filers, Q3 2025 → Q4 2025: 6,809,546 shares bought and 5,724,237 shares sold, net +1,085,309 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 130 holders
| Sanofi | 31.24% | No change | 12,197,737 | $97.0M |
| Perceptive Advisors LLC | 1.51% | Reduce -18.2% | 10,326,103 | $82.1M |
| Johnson & Johnson | 9.51% | No change | 6,641,064 | $52.8M |
| Rubric Capital Management LP | 0.59% | Add +65.7% | 6,175,331 | $49.1M |
| Adage Capital Partners Gp, L.L.C. | 0.05% | Reduce -4.4% | 4,000,000 | $31.8M |
| Prosight Management, LP | 5.27% | Reduce -21.5% | 3,209,788 | $25.5M |
| Millennium Management | 0.02% | Add +24.0% | 3,176,390 | $25.3M |
| BlackRock, Inc. | 0.00% | Add +10.7% | 3,069,844 | $24.4M |
| 683 Capital Management, LLC | 1.78% | Reduce -2.5% | 2,559,082 | $20.3M |
| Morgan Stanley | 0.00% | Add +47.3% | 1,829,252 | $14.5M |
| Knoll Capital Management, LLC | 4.56% | No change | 1,250,000 | $9.9M |
| Erste Asset Management GmbH | 0.05% | Add +11.3% | 789,702 | $6.3M |
| State Street Corp. | 0.00% | Add +7.1% | 729,445 | $5.8M |
| 22NW, LP | 1.96% | No change | 586,519 | $4.7M |
| Geode Capital Management, LLC | 0.00% | Add +3.3% | 573,783 | $4.6M |
| Long Focus Capital Management, LLC | 0.21% | No change | 524,745 | $4.2M |
| Vanguard Group Inc. | 0.00% | Add +6.6% | 494,753 | $3.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +75.5% | 456,744 | $3.6M |
| Opaleye Management Inc. | 0.41% | New | 390,844 | $3.1M |
| D. E. Shaw & Co. | 0.00% | Add +120.4% | 381,763 | $3.0M |
| J. Goldman & Co LP | 0.10% | Reduce -82.3% | 319,687 | $2.5M |
| Hennion & Walsh Asset Management, Inc. | 0.08% | Add +183.1% | 308,509 | $2.5M |
| Woodline Partners LP | 0.01% | Add +49.9% | 300,323 | $2.4M |
| Jefferies Financial Group Inc. | 0.02% | New | 298,242 | $2.4M |
| Stempoint Capital LP | 0.39% | Add +251.4% | 287,689 | $2.3M |
| Northern Trust Corp. | 0.00% | Reduce -4.7% | 258,210 | $2.1M |
| UBS Group AG | 0.00% | Add +172.1% | 222,015 | $1.8M |
| Bank of America Corp. | 0.00% | Add +5.2% | 208,454 | $1.7M |
| Privium Fund Management B.V. | 0.29% | Add +22.7% | 200,000 | $1.6M |
| Royce & Associates LP | 0.01% | New | 176,057 | $1.4M |
| Citadel Advisors | 0.00% | Reduce -30.0% | 143,445 | $1.1M |
| Nuveen, LLC | 0.00% | No change | 131,142 | $1.0M |
| Wellington Management Group LLP | 0.00% | Reduce -7.8% | 130,610 | $1.0M |
| BNP Paribas Financial Markets | 0.00% | Add +1332.2% | 127,999 | $1.0M |
| Blair William & Co. | 0.00% | Reduce -5.4% | 125,400 | $997K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +7.1% | 111,422 | $886K |
| AQR Capital Management | 0.00% | Add +0.2% | 108,014 | $859K |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.5% | 101,090 | $804K |
| Jane Street Group, LLC | 0.00% | Reduce -6.0% | 98,242 | $781K |
| Barclays PLC | 0.00% | Add +14.0% | 95,730 | $761K |
| Russell Investments Group, Ltd. | 0.00% | Add +15.5% | 95,719 | $761K |
| Platinum Investment Management Ltd. | 0.17% | Reduce -26.4% | 93,922 | $747K |
| Invesco Ltd. | 0.00% | Add +30.8% | 90,881 | $723K |
| ExodusPoint Capital Management, LP | 0.01% | Add +102.3% | 86,926 | $691K |
| Susquehanna International Group, LLP | 0.00% | Add +99.1% | 76,902 | $611K |
| Kennedy Capital Management LLC | 0.01% | Add +2.2% | 70,738 | $562K |
| DAVENPORT & Co LLC | 0.00% | Add +25.4% | 69,200 | $550K |
| Trexquant Investment LP | 0.00% | New | 67,537 | $537K |
| Tocqueville Asset Management L.P. | 0.01% | Add +12.2% | 66,400 | $528K |
| Fort Sheridan Advisors LLC | 0.07% | Reduce -0.1% | 65,569 | $521K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 65,558 | $521K |
| Quantinno Capital Management LP | 0.00% | Add +6.2% | 60,756 | $483K |
| Raymond James Financial Inc. | 0.00% | New | 57,232 | $455K |
| Jacobs Levy Equity Management, Inc. | 0.00% | New | 56,235 | $447K |
| Rhumbline Advisers | 0.00% | Reduce -7.4% | 56,207 | $447K |
| Alliancebernstein L.P. | 0.00% | No change | 54,590 | $434K |
| Brown Advisory Inc. | 0.00% | No change | 50,000 | $398K |
| Wells Fargo & Company | 0.00% | Add +82.3% | 49,788 | $396K |
| State of Wisconsin Investment Board | 0.00% | No change | 42,645 | $339K |
| Deutsche Bank AG | 0.00% | Add +22.2% | 40,711 | $324K |
| XTX Topco Ltd | 0.01% | Add +11.0% | 38,030 | $302K |
| Jump Financial, LLC | 0.00% | Reduce -47.6% | 37,000 | $294K |
| VARCOV Co. | 0.10% | — | 32,945 | $262K |
| Letko, Brosseau & Associates Inc. | 0.00% | No change | 32,000 | $254K |
| Virtus Investment Advisers, LLC | 0.06% | New | 29,824 | $237K |
| AlphaCentric Advisors LLC | 0.23% | — | 28,496 | $227K |
| Engineers Gate Manager LP | 0.00% | New | 26,839 | $213K |
| CreativeOne Wealth, LLC | 0.01% | Reduce -16.3% | 26,424 | $210K |
| SkyView Investment Advisors, LLC | 0.02% | No change | 24,000 | $191K |
| JPMorgan Chase & Co. | 0.00% | Reduce -60.4% | 23,946 | $190K |
| HSBC Holdings PLC | 0.00% | Add +24.3% | 23,792 | $189K |
| T. Rowe Price Associates Inc. | 0.00% | No change | 22,776 | $182K |
| Fox Run Management, L.L.C. | 0.03% | Reduce -2.1% | 22,493 | $179K |
| SG Americas Securities, LLC | 0.00% | Reduce -25.5% | 22,357 | $178K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | New | 22,578 | $176K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +10.3% | 21,006 | $167K |
| Beacon Pointe Advisors, LLC | 0.00% | No change | 20,763 | $165K |
| MetLife Investment Management, LLC | 0.00% | Reduce -17.2% | 20,033 | $159K |
| Voleon Capital Management LP | 0.00% | New | 16,587 | $132K |
| Intech Investment Management LLC | 0.00% | No change | 16,016 | $127K |
| Citigroup Inc. | 0.00% | Add +15.9% | 15,552 | $124K |
| Creative Planning | 0.00% | Reduce -6.9% | 15,446 | $123K |
| Perigon Wealth Management, LLC | 0.00% | New | 15,000 | $119K |
| CIBC Private Wealth Group LLC | 0.00% | No change | 15,000 | $119K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -3.7% | 14,898 | $118K |
| FMR LLC | 0.00% | Add +150.3% | 13,825 | $110K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -7.0% | 13,116 | $104K |
| Abel Hall, LLC | 0.02% | New | 12,295 | $98K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 12,237 | $97K |
| Hobbs Group Advisors, LLC | 0.03% | Reduce -15.9% | 11,953 | $95K |
| ProShare Advisors LLC | 0.00% | New | 11,780 | $94K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 11,661 | $93K |
| Royal Bank of Canada | 0.00% | Reduce -96.4% | 10,884 | $87K |
| Levin Capital Strategies, L.P. | 0.01% | Reduce -60.0% | 10,000 | $80K |
| Cwm, LLC | 0.00% | Reduce -0.8% | 7,783 | $62K |
| New York State Common Retirement Fund | 0.00% | No change | 7,263 | $58K |
| Rockefeller Capital Management L.P. | 0.00% | Add +11.4% | 6,130 | $49K |
| Legal & General Group Plc | 0.00% | Reduce -3.1% | 4,276 | $34K |
| State of Alaska, Department of Revenue | 0.00% | No change | 4,030 | $32K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +25.8% | 3,911 | $31K |
"% of holder's portfolio" is MGTX's weight in each manager's 13F, not the share of Meiragtx Holdings PLC the manager owns.