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Disclosery

MGTX MEIRAGTX HLDGS PLC

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COMMON STOCK (common), issuer CIK 1735438

112 managers (113 13F filers) reported a position in MGTX shares at 2025-06-30, 64,273,660 shares in all. 16 filers opened a position and 22 filers sold out during the quarter.

Managers
112
13F filers
113
New
16
Added
36
Reduced
38
Sold out
22
Shares held by filers
64,273,660

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

The latest Form 4 transactions, non-derivative.
OwnerDateSharesPriceFiling
Naylor Stuartofficer (CHIEF SCI OFCR, OPHTHALMOLOGY)2026-10-06-27,659 S$10.64Form 4

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
PERCEPTIVE ADVISORS LLCin group PERCEPTIVE ADVISORS LLC12,626,103$82.2M3.09%+45,00013F-HRTimelineGroup
Sanofi12,197,737$79.5M45.25%013F-HRTimeline
JOHNSON & JOHNSONin group JOHNSON & JOHNSON6,641,064$43.9M13.14%013F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…6,034,578$39.3M0.07%+400,00013F-HRTimelineGroup
Prosight Management, LP4,587,423$29.9M7.29%+895,87713F-HRTimeline
Rubric Capital Management LP3,726,451$24.3M0.39%+1,950,13013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.2,862,408$18.7M<0.01%-265,99713F-HRTimelineGroup
683 Capital Management, LLCin group 683 Capital Management, LLC2,690,000$17.5M1.78%+115,00013F-HRTimelineGroup
J. Goldman & Co LP2,044,574$13.3M0.42%+885,81313F-HRTimeline
Knoll Capital Management, LLC1,250,000$8.15M5.79%013F-HRTimeline
Erste Asset Management GmbHin group Erste Asset Management GmbH789,702$5.15M0.04%013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC785,181$5.12M<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP682,202$4.45M<0.01%+38,11613F-HRTimelineGroup
22NW, LP586,519$3.82M2.41%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC557,569$3.64M<0.01%-40,33413F-HRTimelineGroup
Long Focus Capital Management, LLC524,745$3.42M0.22%+275,00013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY454,354$2.96M<0.01%+114,75613F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC420,674$2.74M<0.01%-28,87513F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA303,875$1.98M<0.01%+295,19213F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP273,935$1.79M<0.01%-39,47213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/266,666$1.74M<0.01%+221,75513F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…222,421$1.45M<0.01%+15,44113F-HRTimelineGroup
ROYCE & ASSOCIATES LP217,053$1.42M0.01%-390,78613F-HRTimeline
PLATINUM INVESTMENT MANAGEMENT LTD208,308$1.36M0.09%013F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC201,610$1.31M<0.01%+154,11913F-HRTimelineGroup
Privium Fund Management B.V.163,000$1.06M0.23%+46,00013F-HRTimeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP149,766$977K<0.01%-242,63213F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC146,513$955K<0.01%-56,57313F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management140,903$919K<0.01%new13F-HRTimelineGroup
Nuveen, LLCin group TIAA139,145$907K<0.01%-10,08613F-HRTimelineGroup
READYSTATE ASSET MANAGEMENT LP133,401$870K0.04%-56,19713F-HRTimeline
BLAIR WILLIAM & CO/IL132,533$864K<0.01%013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp108,202$705K<0.01%-2,36513F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC108,110$705K<0.01%+24,34513F-HR/ATimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC106,626$695K<0.01%+24,50813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co104,742$683K<0.01%-11,28513F-HRTimelineGroup
HRT FINANCIAL LP102,575$668K<0.01%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…88,575$578K<0.01%-37,08213F-HRTimelineGroup
Qube Research & Technologies Ltd81,231$530K<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…79,392$518K<0.01%-75,76013F-HRTimelineGroup
UBS Group AGin group UBS Group AG72,899$475K<0.01%+10,10813F-HRTimelineGroup
Fort Sheridan Advisors LLC68,423$446K0.06%-1,29313F-HRTimeline
Hennion & Walsh Asset Management, Inc.64,127$418K0.02%new13F-HRTimeline
RHUMBLINE ADVISERS63,715$415K<0.01%+5,48813F-HRTimeline
Sender Co & Partners, Inc.60,640$395K0.11%new13F-HRTimeline
DAVENPORT & Co LLC55,200$360K<0.01%-1,00013F-HRTimeline
ALLIANCEBERNSTEIN L.P.54,590$356K<0.01%+4,20013F-HRTimeline
BROWN ADVISORY INCin group BROWN ADVISORY INC50,000$326K<0.01%new13F-HRTimelineGroup
Quantinno Capital Management LP48,893$319K<0.01%new13F-HRTimeline
LETKO, BROSSEAU & ASSOCIATES INC45,300$295K0.01%013F-HRTimeline
TOCQUEVILLE ASSET MANAGEMENT L.P.in group TOCQUEVILLE ASSET MANAGEMENT …44,500$290K<0.01%+2,00013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.44,153$288K<0.01%-306,24813F-HRTimelineGroup
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC36,583$239K0.01%-1713F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC35,189$229K0.01%+1,28713F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources32,514$212K<0.01%-3213F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…30,837$201K<0.01%013F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\29,124$190K<0.01%-22,09613F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD26,845$175K<0.01%-12,68213F-HRTimeline
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding25,915$169K-4,145Timeline
Squarepoint Ops LLCin group Squarepoint Ops LLC25,280$165K<0.01%new13F-HR/ATimelineGroup
LEVIN CAPITAL STRATEGIES, L.P.25,000$163K0.02%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO24,867$162K<0.01%-3,69413F-HRTimelineGroup
SkyView Investment Advisors, LLC24,000$156K0.02%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN22,951$150K<0.01%-1,47313F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/22,776$149K<0.01%+1,83513F-HRTimeline
IEQ CAPITAL, LLC21,418$140K<0.01%+9,15113F-HRTimeline
PUREfi Wealth, LLC20,000$130K0.1%+10,00013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC18,283$119K<0.01%-18,31113F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …16,824$110K<0.01%-4513F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC16,574$108K<0.01%-7,86213F-HRTimeline
China Universal Asset Management Co., L…16,141$105K0.01%+46513F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.15,000$97.8K<0.01%013F-HRTimelineGroup
Hobbs Group Advisors, LLC14,213$92.7K0.03%new13F-HRTimeline
Creative Planningin group Creative Planning12,771$83.3K<0.01%-25,46113F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC12,609$82.2K<0.01%013F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…12,237$79.8K<0.01%013F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC11,904$77.3K<0.01%-6,50613F-HRTimelineGroup
Police & Firemen's Retirement System of…11,661$76K<0.01%013F-HRTimeline
ProShare Advisors LLC11,546$75.3K<0.01%-2,18413F-HRTimeline
Family Manage LLC10,000$65.2K0.01%013F-HRTimeline
FNY Investment Advisers, LLC9,360$61K0.03%new13F-HRTimeline
GROUP ONE TRADING LLC9,259$60.4K<0.01%+4,74213F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…8,797$57.4K<0.01%+7,00513F-HRTimelineGroup
CWM, LLCin group CWM, LLC8,434$55K<0.01%-24013F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND7,263$47.4K<0.01%013F-HR/ATimeline
FMR LLCin group FMR LLC5,463$35.6K<0.01%+2,00113F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,871$31.8K<0.01%013F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS4,810$31.4K<0.01%+1,46613F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc4,415$28.8K<0.01%-34813F-HRTimelineGroup
SIMPLEX TRADING, LLC3,005$19K<0.01%-1,02613F-HRTimeline
Versant Capital Management, Inc2,254$14.7K<0.01%+1,82913F-HRTimeline
GF FUND MANAGEMENT CO. LTD.2,001$13K<0.01%013F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…1,841$12K<0.01%-20413F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC1,750$11.4K<0.01%new13F-HRTimelineGroup
AMALGAMATED BANK1,607$10K<0.01%013F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp800$5.22K<0.01%new13F-HRTimelineGroup
Sterling Capital Management LLC490$3.19K<0.01%+19513F-HR/ATimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.330$2K<0.01%013F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.250$1.63K<0.01%+15013F-HR/ATimelineGroup
ROTHSCHILD INVESTMENT LLC220$1.43K<0.01%+5013F-HRTimeline
SBI Securities Co., Ltd.213$1.39K<0.01%-10313F-HRTimeline
Essential Partners LLC207$1.35K<0.01%13F-HRTimeline
GAMMA Investing LLC194$1.26K<0.01%-46213F-HRTimeline
NISA INVESTMENT ADVISORS, LLC130$848<0.01%-30513F-HRTimeline
Parkside Financial Bank & Trust75$490<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…72$469<0.01%-13113F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…52$339<0.01%-1513F-HRTimelineGroup
Founders Capital Management50$326<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\38$248<0.01%013F-HRTimelineGroup
True Wealth Design, LLC25$163<0.01%+713F-HRTimeline
IFP Advisors, Inc16$105<0.01%+413F-HRTimeline
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.

Events

  • Naylor Stuart sold 27,659 MGTX shares on 2026-10-06, Form 4 filed 2026-10-06. 0001742771-26-000014

    Accepted , ingested