Latest Period
Q1 2026
Security Snapshot
MeiraGTx Holdings plc - Ordinary Shares, par value $0.00003881 per share (MGTX) Institutional Ownership
CUSIP: G59665102
13F Institutional Holders and Ownership History from Q2 2018 to Q1 2026
Institutions Reporting
133
Shares (Excl. Options)
67,387,776
Price
$8.66
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- Security type / class
- Equity / Ordinary Shares, par value $0.00003881 per share
- Symbol
- MGTX on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 67,387,776
- Total 13F value
- $582,996,492
- Portfolio coverage rank
- 0%
- Share change
- +2,303,442
- Value change
- +$20,857,620
- Number of holders
- 133
- Shares outstanding
- 81,466,395
- SEC-reported price per share
- $9.22
- Insider filing price
- $9.22
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MGTX - MeiraGTx Holdings plc - Ordinary Shares, par value $0.00003881 per share is tracked under CUSIP G59665102.
- 133 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 130 to 133 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $518,195,876 to $582,996,492.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 133 institutions filings for Q1 2026.
Security key
G59665102
Latest holder period
Q1 2026
13F holders
133
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
MGTX full holder history
MeiraGTx Holdings plc SEC filings
MeiraGTx Holdings plc company facts
MeiraGTx Holdings plc insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G59665102:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
MGTX
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 13% | -2.3% | $101,691,430 | +$11,263,327 | 11,742,117 | +12% | Perceptive Advisors LLC | 17 Apr 2026 |
| Rubric Capital Management LP | 7.9% | $45,573,943 | 6,175,331 | Rubric Capital Management LP | 31 Dec 2025 | |||
| Adage Capital Management, L.P. | 4.9% | -5.8% | $38,520,000 | -$1,777,486 | 4,000,000 | -4.4% | Adage Capital Management, L.P. | 31 Mar 2026 |
| Prosight Management, LP | 4% | -28% | $23,702,995 | -$8,448,499 | 3,211,788 | -26% | W. Lawrence Hawkins | 31 Dec 2025 |
As of 31 Mar 2026, 133 institutional investors reported holding 67,387,776 shares of MeiraGTx Holdings plc - Ordinary Shares, par value $0.00003881 per share (MGTX). This represents 83% of the company’s total 81,466,395 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
78%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Sanofi | 15% | 12,197,737 | 0% | 31% | $105,632,402 |
| PERCEPTIVE ADVISORS LLC | 13% | 10,326,103 | 0% | 1.8% | $89,312,864 |
| Rubric Capital Management LP | 8.6% | 7,000,000 | +13% | 0.74% | $60,620,000 |
| JOHNSON & JOHNSON | 8.2% | 6,641,064 | 0% | 8.8% | $57,511,614 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 4.9% | 4,000,000 | 0% | 0.05% | $34,640,000 |
| MILLENNIUM MANAGEMENT LLC | 4.3% | 3,465,699 | +9.1% | 0.02% | $30,012,953 |
| BlackRock, Inc. | 3.9% | 3,168,148 | +3.2% | 0% | $27,436,163 |
| Prosight Management, LP | 3.2% | 2,629,971 | -18% | 3.7% | $22,775,549 |
| 683 Capital Management, LLC | 3% | 2,450,000 | -4.3% | 2% | $21,217,000 |
| Opaleye Management Inc. | 2.6% | 2,123,259 | +443% | 2.5% | $18,387,423 |
| MORGAN STANLEY | 2% | 1,589,940 | -13% | 0% | $13,768,880 |
| Knoll Capital Management, LLC | 1.5% | 1,250,000 | 0% | 6% | $10,825,000 |
| KENNEDY CAPITAL MANAGEMENT LLC | 1.1% | 858,379 | +1113% | 0.16% | $7,433,562 |
| STATE STREET CORP | 0.92% | 753,378 | +3.3% | 0% | $6,524,253 |
| Erste Asset Management GmbH | 0.88% | 719,702 | -8.9% | 0.05% | $5,822,389 |
| Logos Global Management LP | 0.86% | 700,000 | 0.31% | $6,062,000 | |
| GEODE CAPITAL MANAGEMENT, LLC | 0.72% | 584,899 | +1.9% | 0% | $5,065,224 |
| Long Focus Capital Management, LLC | 0.64% | 524,745 | 0% | 0.2% | $4,544,292 |
| GOLDMAN SACHS GROUP INC | 0.54% | 441,414 | -3.4% | 0% | $3,822,645 |
| D. E. Shaw & Co., Inc. | 0.52% | 425,281 | +11% | 0% | $3,682,933 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.49% | 397,281 | 0% | 0% | $3,440,453 |
| Hennion & Walsh Asset Management, Inc. | 0.44% | 354,755 | +15% | 0.1% | $3,072,178 |
| UBS Group AG | 0.37% | 303,198 | +37% | 0% | $2,625,695 |
| Woodline Partners LP | 0.37% | 300,323 | 0% | 0.01% | $2,600,797 |
| NORTHERN TRUST CORP | 0.33% | 271,879 | +5.3% | 0% | $2,354,472 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
32
Latest
Q1 2026
Rows shown
1-25 of 32
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 67,387,776 | $582,996,492 | +$20,857,620 | $8.66 | 133 |
| 2025 Q4 | 65,182,421 | $518,195,876 | +$7,589,640 | $7.95 | 130 |
| 2025 Q3 | 64,115,394 | $527,564,099 | +$100,848 | $8.23 | 122 |
| 2025 Q2 | 64,273,449 | $419,562,716 | +$27,529,421 | $6.52 | 111 |
| 2025 Q1 | 59,986,380 | $406,655,139 | +$13,171,914 | $6.78 | 118 |
| 2024 Q4 | 58,134,853 | $353,880,152 | +$5,661,044 | $6.09 | 101 |
| 2024 Q3 | 45,221,185 | $188,552,401 | +$19,157,134 | $4.17 | 97 |
| 2024 Q2 | 40,458,048 | $170,235,110 | +$4,338,640 | $4.21 | 91 |
| 2024 Q1 | 39,300,324 | $238,469,096 | +$641,712 | $6.07 | 95 |
| 2023 Q4 | 39,193,056 | $275,136,034 | +$9,570,624 | $7.02 | 86 |
| 2023 Q3 | 37,791,917 | $185,560,138 | +$956,121 | $4.91 | 74 |
| 2023 Q2 | 37,549,331 | $252,327,936 | +$61,583,237 | $6.72 | 77 |
| 2023 Q1 | 28,748,444 | $148,619,405 | -$5,267,767 | $5.17 | 88 |
| 2022 Q4 | 29,625,998 | $193,116,514 | +$5,062,552 | $6.52 | 98 |
| 2022 Q3 | 27,968,146 | $234,567,872 | -$9,091,785 | $8.41 | 98 |
| 2022 Q2 | 28,548,680 | $216,121,658 | -$5,764,085 | $7.57 | 105 |
| 2022 Q1 | 29,291,750 | $405,685,931 | +$11,811,095 | $13.85 | 101 |
| 2021 Q4 | 28,368,763 | $672,844,608 | +$17,527,958 | $23.74 | 95 |
| 2021 Q3 | 27,863,121 | $367,263,288 | -$1,783,285 | $13.18 | 79 |
| 2021 Q2 | 27,969,634 | $433,466,019 | +$13,341,762 | $15.50 | 76 |
| 2021 Q1 | 27,129,412 | $384,781,966 | +$5,393,087 | $14.43 | 79 |
| 2020 Q4 | 26,738,368 | $404,815,585 | +$66,577,970 | $15.14 | 90 |
| 2020 Q3 | 22,138,540 | $293,123,916 | +$16,367,005 | $13.24 | 82 |
| 2020 Q2 | 20,907,650 | $261,758,875 | +$10,066,092 | $12.52 | 78 |
| 2020 Q1 | 20,093,813 | $270,060,598 | +$42,993,852 | $13.44 | 82 |