MGTX Institutional Ownership & Shareholders
MeiraGTx Holdings plc (MGTX) is currently held by 165 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.06B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Sanofi is currently the largest disclosed institutional shareholder of MGTX tracked by InsiderSet, reporting ownership valued at approximately $164.79M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $113.68M, representing an estimated loss of -31.01% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 73% of the total disclosed MGTX value among the investors covered in this analysis. Major shareholders include Sanofi, Perceptive Advisors Llc, Rubric Capital Management Lp, and several other long-term asset managers with concentrated positions in MeiraGTx Holdings plc (MGTX).
This page ranks the largest institutional MGTX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
165
Total Reported Value
$1.06B
Largest Holder
Sanofi
Largest Position
$164.79M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
88
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Sanofi | 30.86% | 12,197,737 | $164,791,427 | $113,682,909 | -$51,108,518 | -31.01% | |
| Perceptive Advisors Llc | 2.26% | 10,786,658 | $145,727,749 | $100,531,653 | -$45,196,096 | -31.01% | |
| Rubric Capital Management Lp | 1.13% | 9,100,000 | $122,941,000 | $84,812,000 | -$38,129,000 | -31.01% | |
| Johnson & Johnson | 9.59% | 6,641,064 | $73,051,704 | $61,894,716 | -$11,156,988 | -15.27% | |
| Blackrock, Inc. | 0.00% | 4,757,178 | $64,269,475 | $44,336,899 | -$19,932,576 | -31.01% | |
| Adage Capital Partners Gp, L.L.C. | 0.08% | 4,400,000 | $59,444,000 | $41,008,000 | -$18,436,000 | -31.01% | |
| Opaleye Management Inc. | 4.34% | 3,550,000 | $47,960,500 | $33,086,000 | -$14,874,500 | -31.01% | |
| Millennium Management Llc | 0.03% | 2,971,752 | $40,148,370 | $27,696,729 | -$12,451,641 | -31.01% | |
| 683 Capital Management, Llc | 2.86% | 2,300,000 | $31,073,000 | $21,436,000 | -$9,637,000 | -31.01% | |
| Woodline Partners Lp | 0.06% | 1,500,135 | $20,266,824 | $13,981,258 | -$6,285,566 | -31.01% | |
| State Street Corp | 0.00% | 1,393,222 | $18,822,429 | $12,984,829 | -$5,837,600 | -31.01% | |
| Morgan Stanley | 0.00% | 1,312,703 | $17,734,617 | $12,234,392 | -$5,500,225 | -31.01% | |
| Knoll Capital Management, Llc | 7.88% | 1,250,000 | $16,887,500 | $11,650,000 | -$5,237,500 | -31.01% | |
| Kennedy Capital Management Llc | 0.26% | 1,105,421 | $14,934,238 | $10,302,524 | -$4,631,714 | -31.01% | |
| Long Focus Capital Management, Llc | 0.60% | 1,080,300 | $14,594,853 | $10,068,396 | -$4,526,457 | -31.01% | |
| Jacobs Levy Equity Management, Inc | 0.05% | 1,015,106 | $13,714,082 | $9,460,788 | -$4,253,294 | -31.01% | |
| D. E. Shaw & Co., Inc. | 0.01% | 852,902 | $11,522,706 | $7,949,047 | -$3,573,659 | -31.01% | |
| Heights Capital Management, Inc | 2.65% | 850,000 | $11,483,500 | $7,922,000 | -$3,561,500 | -31.01% | |
| Geode Capital Management, Llc | 0.00% | 849,082 | $11,471,097 | $7,913,444 | -$3,557,653 | -31.01% | |
| Vanguard Portfolio Management Llc | 0.00% | 723,563 | $9,775,336 | $6,743,607 | -$3,031,729 | -31.01% | |
| Citadel Advisors Llc | 0.01% | 650,489 | $8,788,106 | $6,062,557 | -$2,725,549 | -31.01% | |
| Erste Asset Management Gmbh | 0.07% | 691,200 | $8,667,648 | $6,441,984 | -$2,225,664 | -25.68% | |
| Nuveen, Llc | 0.00% | 639,459 | $8,639,091 | $5,959,758 | -$2,679,333 | -31.01% | |
| J. Goldman & Co Lp | 0.29% | 601,972 | $8,132,642 | $5,610,379 | -$2,522,263 | -31.01% | |
| Mackenzie Financial Corp | 0.01% | 707,885 | $7,786,735 | $6,597,488 | -$1,189,247 | -15.27% | |
| Pfm Health Sciences, Lp | 0.53% | 455,286 | $6,150,914 | $4,243,266 | -$1,907,648 | -31.01% | |
| Northern Trust Corp | 0.00% | 409,855 | $5,537,141 | $3,819,849 | -$1,717,292 | -31.01% | |
| Hennion & Walsh Asset Management, Inc. | 0.14% | 433,504 | $4,768,544 | $4,040,257 | -$728,287 | -15.27% | |
| Panagora Asset Management Inc | 0.01% | 350,174 | $4,730,851 | $3,263,622 | -$1,467,229 | -31.01% | |
| Goldman Sachs Group Inc | 0.00% | 327,416 | $4,423,390 | $3,051,517 | -$1,371,873 | -31.01% | |
| Bank Of America Corp | 0.00% | 289,720 | $3,914,117 | $2,700,190 | -$1,213,927 | -31.01% | |
| Point72 Asset Management, L.P. | 0.00% | 202,393 | $2,734,329 | $1,886,303 | -$848,026 | -31.01% | |
| Ghisallo Capital Management Llc | 0.05% | 200,000 | $2,702,000 | $1,864,000 | -$838,000 | -31.01% | |
| Aqr Capital Management Llc | 0.00% | 196,583 | $2,655,837 | $1,832,154 | -$823,683 | -31.01% | |
| Jpmorgan Chase & Co | 0.00% | 205,212 | $2,573,360 | $1,912,576 | -$660,784 | -25.68% | |
| Ubs Group Ag | 0.00% | 184,574 | $2,493,594 | $1,720,230 | -$773,364 | -31.01% | |
| Assenagon Asset Management S.A. | 0.00% | 225,363 | $2,478,993 | $2,100,383 | -$378,610 | -15.27% | |
| Privium Fund Management B.V. | 0.44% | 208,512 | $2,293,632 | $1,943,332 | -$350,300 | -15.27% | |
| Squarepoint Ops Llc | 0.00% | 162,412 | $2,194,186 | $1,513,680 | -$680,506 | -31.01% | |
| Russell Investments Group, Ltd. | 0.00% | 147,329 | $1,990,413 | $1,373,106 | -$617,307 | -31.01% | |
| Wellington Management Group Llp | 0.00% | 142,923 | $1,930,890 | $1,332,042 | -$598,848 | -31.01% | |
| Charles Schwab Investment Management Inc | 0.00% | 142,434 | $1,924,283 | $1,327,485 | -$596,798 | -31.01% | |
| Alps Advisors Inc | 0.01% | 172,293 | $1,895,223 | $1,605,771 | -$289,452 | -15.27% | |
| Bank Of New York Mellon Corp | 0.00% | 138,352 | $1,869,129 | $1,289,441 | -$579,688 | -31.01% | |
| Blair William & Co/Il | 0.00% | 125,478 | $1,695,208 | $1,169,455 | -$525,753 | -31.01% | |
| Voleon Capital Management Lp | 0.03% | 117,790 | $1,591,343 | $1,097,803 | -$493,540 | -31.01% | |
| Swiss National Bank | 0.00% | 111,400 | $1,505,014 | $1,038,248 | -$466,766 | -31.01% | |
| Y-Intercept (Hong Kong) Ltd | 0.03% | 133,676 | $1,470,436 | $1,245,860 | -$224,576 | -15.27% | |
| Barclays Plc | 0.00% | 98,955 | $1,336,882 | $922,261 | -$414,621 | -31.01% | |
| Invesco Ltd. | 0.00% | 94,540 | $1,277,235 | $881,113 | -$396,122 | -31.01% |
Frequently asked questions about MGTX
Who are the largest institutional holders of MGTX?
The largest institutional holders of MGTX reported in the latest SEC Form 13F filings include Sanofi, Perceptive Advisors Llc, Rubric Capital Management Lp, Johnson & Johnson, and Blackrock, Inc.. InsiderSet ranks institutional holders by their latest reported MGTX position.
What is MGTX institutional ownership?
This page tracks MGTX positions reported by institutional investment managers through SEC Form 13F. MeiraGTx Holdings plc (MGTX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MGTX?
InsiderSet currently tracks 165 institutional managers reporting MGTX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MGTX shareholders.
How much MGTX stock do institutions own?
Institutional investment managers disclosed approximately $1.06B in MGTX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MGTX institutional ownership last updated?
The latest MGTX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MGTX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MGTX position after the reporting date.
Are institutions buying or selling MGTX?
Institutional buying and selling can be analyzed by comparing MGTX positions across consecutive 13F reporting periods. InsiderSet's MGTX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MGTX ownership changes.
How has MGTX institutional ownership changed over time?
InsiderSet tracks MGTX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.