Meiragtx HoldingsMGTX
13F holders, Q1 2026 (March 31)133holders +3
17new positions
15sold out
5famous investors
$8.65avg. 13F price*
At the end of Q1 2026, 133 institutions reported holding Meiragtx Holdings PLC (MGTX) in their 13F filings, up 3 from Q4 2025. 17 opened new positions and 15 sold out. The largest holders were Sanofi ($105.6M), Perceptive Advisors LLC ($89.3M) and Rubric Capital Management LP ($60.6M). 5 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 Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Meiragtx Holdings PLC
- CUSIP
- G59665102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 17 | $8.6M |
| Exits | 15 | $9.8M |
All 13F filers, Q4 2025 → Q1 2026: 5,138,539 shares bought and 2,871,594 shares sold, net +2,266,945 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 133 holders
| Sanofi | 31.44% | No change | 12,197,737 | $105.6M |
| Perceptive Advisors LLC | 1.77% | No change | 10,326,103 | $89.3M |
| Rubric Capital Management LP | 0.74% | Add +13.3% | 7,000,000 | $60.6M |
| Johnson & Johnson | 8.82% | No change | 6,641,064 | $57.5M |
| Adage Capital Partners Gp, L.L.C. | 0.05% | No change | 4,000,000 | $34.6M |
| Millennium Management | 0.02% | Add +9.1% | 3,465,699 | $30.0M |
| BlackRock, Inc. | 0.00% | Add +3.2% | 3,168,148 | $27.4M |
| Prosight Management, LP | 3.73% | Reduce -18.1% | 2,629,971 | $22.8M |
| 683 Capital Management, LLC | 2.08% | Reduce -4.3% | 2,450,000 | $21.2M |
| Opaleye Management Inc. | 2.42% | Add +443.3% | 2,123,259 | $18.4M |
| Morgan Stanley | 0.00% | Reduce -13.1% | 1,589,940 | $13.8M |
| Knoll Capital Management, LLC | 5.74% | No change | 1,250,000 | $10.8M |
| Kennedy Capital Management LLC | 0.16% | Add +1113.5% | 858,379 | $7.4M |
| State Street Corp. | 0.00% | Add +3.3% | 753,378 | $6.5M |
| Logos Global Management LP | 0.31% | New | 700,000 | $6.1M |
| Erste Asset Management GmbH | 0.05% | Reduce -8.9% | 719,702 | $5.8M |
| Geode Capital Management, LLC | 0.00% | Add +1.9% | 584,899 | $5.1M |
| Long Focus Capital Management, LLC | 0.20% | No change | 524,745 | $4.5M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -3.4% | 441,414 | $3.8M |
| D. E. Shaw & Co. | 0.00% | Add +11.4% | 425,281 | $3.7M |
| Vanguard Portfolio Management LLC | 0.00% | — | 397,281 | $3.4M |
| Hennion & Walsh Asset Management, Inc. | 0.10% | Add +15.0% | 354,755 | $3.1M |
| UBS Group AG | 0.00% | Add +36.6% | 303,198 | $2.6M |
| Woodline Partners LP | 0.01% | No change | 300,323 | $2.6M |
| Northern Trust Corp. | 0.00% | Add +5.3% | 271,879 | $2.4M |
| Bank of America Corp. | 0.00% | Add +17.5% | 244,944 | $2.1M |
| Privium Fund Management B.V. | 0.38% | Add +6.1% | 212,112 | $1.8M |
| J. Goldman & Co LP | 0.08% | Reduce -35.5% | 206,210 | $1.8M |
| Jefferies Financial Group Inc. | 0.02% | Reduce -43.9% | 167,452 | $1.5M |
| Nuveen, LLC | 0.00% | Add +1.0% | 132,454 | $1.1M |
| Wellington Management Group LLP | 0.00% | Reduce -3.3% | 126,331 | $1.1M |
| Blair William & Co. | 0.00% | Add +0.0% | 125,422 | $1.1M |
| Citadel Advisors | 0.00% | Reduce -19.1% | 115,995 | $1.0M |
| BNP Paribas Financial Markets | 0.00% | Reduce -12.7% | 111,719 | $967K |
| AQR Capital Management | 0.00% | Add +2.8% | 110,993 | $961K |
| Jane Street Group, LLC | 0.00% | Add +7.8% | 105,944 | $917K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -10.1% | 100,194 | $868K |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.0% | 100,097 | $867K |
| Sei Investments Co. | 0.00% | New | 99,627 | $863K |
| Trexquant Investment LP | 0.01% | Add +44.5% | 97,620 | $845K |
| Russell Investments Group, Ltd. | 0.00% | Add +1.5% | 97,168 | $841K |
| Invesco Ltd. | 0.00% | Add +3.9% | 94,435 | $818K |
| Platinum Investment Management Ltd. | 0.20% | No change | 93,922 | $813K |
| Point72 Asset Management | 0.00% | New | 70,953 | $614K |
| DAVENPORT & Co LLC | 0.00% | No change | 69,200 | $599K |
| Tocqueville Asset Management L.P. | 0.01% | Add +2.7% | 68,200 | $591K |
| Fort Sheridan Advisors LLC | 0.07% | Add +2.0% | 66,860 | $579K |
| Quantinno Capital Management LP | 0.00% | Reduce -7.2% | 56,402 | $488K |
| Jump Financial, LLC | 0.01% | Add +52.0% | 56,253 | $487K |
| Rhumbline Advisers | 0.00% | Reduce -0.8% | 55,761 | $483K |
| Raymond James Financial Inc. | 0.00% | Reduce -5.9% | 53,856 | $466K |
| AlphaCentric Advisors LLC | 0.46% | Add +88.4% | 53,694 | $465K |
| Alliancebernstein L.P. | 0.00% | No change | 54,590 | $434K |
| Brown Advisory Inc. | 0.00% | No change | 50,000 | $433K |
| XTX Topco Ltd | 0.01% | Add +14.0% | 43,356 | $375K |
| HSBC Holdings PLC | 0.00% | Add +67.2% | 39,787 | $338K |
| Barclays PLC | 0.00% | Reduce -60.2% | 38,138 | $330K |
| Susquehanna International Group, LLP | 0.00% | Reduce -52.0% | 36,914 | $320K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 33,665 | $292K |
| Letko, Brosseau & Associates Inc. | 0.00% | No change | 32,000 | $277K |
| EntryPoint Capital, LLC | 0.08% | New | 31,932 | $277K |
| T. Rowe Price Associates Inc. | 0.00% | Add +38.0% | 31,430 | $273K |
| Virtus Investment Advisers, LLC | 0.07% | Add +2.5% | 30,570 | $265K |
| Deutsche Bank AG | 0.00% | Reduce -25.8% | 30,216 | $262K |
| Engineers Gate Manager LP | 0.00% | Reduce -0.1% | 26,800 | $232K |
| Beacon Pointe Advisors, LLC | 0.00% | Add +28.9% | 26,763 | $232K |
| CreativeOne Wealth, LLC | 0.01% | No change | 26,424 | $229K |
| HRT Financial LP | 0.00% | New | 24,444 | $211K |
| SkyView Investment Advisors, LLC | 0.03% | No change | 24,000 | $208K |
| JPMorgan Chase & Co. | 0.00% | Add +1.6% | 24,338 | $197K |
| MetLife Investment Management, LLC | 0.00% | Add +13.3% | 22,701 | $197K |
| Voleon Capital Management LP | 0.00% | Add +34.8% | 22,359 | $194K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -2.4% | 22,033 | $191K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -74.9% | 21,847 | $189K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.4% | 21,516 | $186K |
| Squarepoint Ops LLC | 0.00% | New | 18,584 | $161K |
| CIBC Bancorp USA Inc. | 0.00% | — | 17,277 | $150K |
| Wells Fargo & Company | 0.00% | Reduce -66.7% | 16,594 | $144K |
| Creative Planning | 0.00% | Add +0.1% | 15,459 | $134K |
| Perigon Wealth Management, LLC | 0.00% | Add +0.9% | 15,140 | $131K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +8.9% | 14,284 | $124K |
| Jacobs Levy Equity Management, Inc. | 0.00% | Reduce -75.7% | 13,673 | $118K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -11.5% | 13,190 | $114K |
| Gsa Capital Partners LLP | 0.01% | New | 12,526 | $108K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 12,237 | $106K |
| Bank of Nova Scotia | 0.00% | New | 12,106 | $105K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 11,661 | $101K |
| Intech Investment Management LLC | 0.00% | Reduce -35.0% | 10,413 | $90K |
| State of Wisconsin Investment Board | 0.00% | Reduce -75.7% | 10,345 | $90K |
| Algert Global LLC | 0.00% | New | 10,270 | $89K |
| Hudson Bay Capital Management LP | 0.00% | New | 10,190 | $88K |
| ProShare Advisors LLC | 0.00% | Reduce -13.8% | 10,156 | $88K |
| Royal Bank of Canada | 0.00% | Reduce -11.4% | 9,643 | $84K |
| Cwm, LLC | 0.00% | Reduce -0.2% | 7,768 | $67K |
| New York State Common Retirement Fund | 0.00% | No change | 7,263 | $63K |
| Rockefeller Capital Management L.P. | 0.00% | Add +8.5% | 6,650 | $58K |
| FMR LLC | 0.00% | Reduce -57.9% | 5,821 | $50K |
| Citigroup Inc. | 0.00% | Reduce -65.5% | 5,372 | $47K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +7.3% | 4,198 | $36K |
| State of Alaska, Department of Revenue | 0.00% | No change | 4,030 | $34K |
"% of holder's portfolio" is MGTX's weight in each manager's 13F, not the share of Meiragtx Holdings PLC the manager owns.