Meiragtx Holdings plc: which funds bought and sold

Institutions that bought and sold Meiragtx Holdings shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 118 institutions that filed 13F reports for both quarters added to or opened positions in Meiragtx Holdings, and 34 cut or closed them. Together they added a net 11.4M shares, +16.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 7.6M shares (+24.5%); index fund managers were net buyers of 3.0M shares (+56.7%). 37 opened a new position and 12 sold out entirely.

Bought, Q2 2026 118 institutions, 37 of them new holders Sold, Q2 2026 34 institutions, 12 of them sold out

Net change, all compared +11.4M shares (+16.9%)

Net change, active managers +7.6M shares (+24.5%), 29 bought, 5 sold

Buyers versus sellers

institutions compared, 167

118 bought 15 34 sold

Active managers and hedge funds 29 bought · 5 sold · +7.6M

Index fund managers 9 bought · 0 sold · +3.0M

Other institutions 80 bought · 29 sold · +683K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Rubric Capital Management LP Hedge fund	+2.1M +30.0%	9.1M	$123M
Blackrock, Inc. Index funds	+1.6M +50.2%	4.8M	$64.3M
Opaleye Management Inc.	+1.4M +67.2%	3.5M	$48M
Woodline Partners LP Hedge fund	+1.2M +399.5%	1.5M	$20.3M
Jacobs Levy Equity Management, Inc Active manager	+1.0M +7324.2%	1.0M	$13.7M
Heights Capital Management, Inc	+850K New position	850K	$11.5M
State Street Corp Index funds	+640K +84.9%	1.4M	$18.8M
Long Focus Capital Management, LLC Hedge fund	+556K +105.9%	1.1M	$14.6M
Citadel Advisors LLC Hedge fund	+534K +460.8%	650K	$8.8M
Nuveen, LLC	+507K +382.8%	639K	$8.6M
Perceptive Advisors LLC Hedge fund	+461K +4.5%	10.8M	$146M
Pfm Health Sciences, LP Hedge fund	+455K New position	455K	$6.2M
D. E. Shaw & Co., Inc. Hedge fund	+428K +100.6%	853K	$11.5M
Adage Capital Partners Gp, L.L.C. Hedge fund	+400K +10.0%	4.4M	$59.4M
J. Goldman & Co LP Hedge fund	+396K +191.9%	602K	$8.1M
Panagora Asset Management Inc Active manager	+350K New position	350K	$4.7M
Vanguard Portfolio Management LLC Index funds	+326K +82.1%	724K	$9.8M
Geode Capital Management, LLC Index funds	+264K +45.2%	849K	$11.5M
Kennedy Capital Management LLC Active manager	+247K +28.8%	1.1M	$14.9M
Ghisallo Capital Management LLC Hedge fund	+200K New position	200K	$2.7M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Rubric Capital Management LP Hedge fund	+2.1M +30.0%	9.1M	$123M
Woodline Partners LP Hedge fund	+1.2M +399.5%	1.5M	$20.3M
Jacobs Levy Equity Management, Inc Active manager	+1.0M +7324.2%	1.0M	$13.7M
Long Focus Capital Management, LLC Hedge fund	+556K +105.9%	1.1M	$14.6M
Citadel Advisors LLC Hedge fund	+534K +460.8%	650K	$8.8M
Perceptive Advisors LLC Hedge fund	+461K +4.5%	10.8M	$146M
Pfm Health Sciences, LP Hedge fund	+455K New position	455K	$6.2M
D. E. Shaw & Co., Inc. Hedge fund	+428K +100.6%	853K	$11.5M
Adage Capital Partners Gp, L.L.C. Hedge fund	+400K +10.0%	4.4M	$59.4M
J. Goldman & Co LP Hedge fund	+396K +191.9%	602K	$8.1M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Prosight Management, LP	−2.5M −96.6%	90K	$1.2M
Logos Global Management LP Hedge fund	−700K Sold out	0	—
Millennium Management LLC Hedge fund	−494K −14.3%	3.0M	$40.1M
Morgan Stanley	−277K −17.4%	1.3M	$17.7M
Jefferies Financial Group Inc.	−167K Sold out	0	—
683 Capital Management, LLC Hedge fund	−150K −6.1%	2.3M	$31.1M
UBS Group AG	−119K −39.1%	185K	$2.5M
Goldman Sachs Group Inc	−114K −25.8%	327K	$4.4M
Jane Street Group, LLC	−106K Sold out	0	—
BNP Paribas Financial Markets	−100K −89.2%	12K	$163,120
Platinum Investment Management Ltd	−94K Sold out	0	—
Jump Financial, LLC	−56K Sold out	0	—
Sei Investments Co	−52K −52.2%	48K	$643,076
Trexquant Investment LP Hedge fund	−32K −33.0%	65K	$883,459
Erste Asset Management Gmbh	−29K −4.0%	691K	$8.7M
HRT Financial LP	−24K Sold out	0	—
Exoduspoint Capital Management, LP Hedge fund	−22K Sold out	0	—
Privium Fund Management B.V.	−16K −7.5%	196K	$2.6M
Xtx Topco Ltd	−15K −35.4%	28K	$378,375
Gsa Capital Partners LLP	−13K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Logos Global Management LP Hedge fund	−700K Sold out	0	—
Millennium Management LLC Hedge fund	−494K −14.3%	3.0M	$40.1M
683 Capital Management, LLC Hedge fund	−150K −6.1%	2.3M	$31.1M
Trexquant Investment LP Hedge fund	−32K −33.0%	65K	$883,459
Exoduspoint Capital Management, LP Hedge fund	−22K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Heights Capital Management, Inc	850K	$11.5M
Pfm Health Sciences, LPHedge fund	455K	$6.2M
Panagora Asset Management IncActive manager	350K	$4.7M
Ghisallo Capital Management LLCHedge fund	200K	$2.7M
Y-Intercept (Hong Kong) Ltd	148K	$2M
Swiss National Bank	111K	$1.5M
Alps Advisors Inc	93K	$1.3M
Ameriprise Financial Inc	64K	$869,612
Franklin Resources IncActive manager	61K	$825,069
Martingale Asset Management L PActive manager	48K	$646,508

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Logos Global Management LPHedge fund	700K	$6.1M
Jefferies Financial Group Inc.	167K	$1.5M
Jane Street Group, LLC	106K	$917,475
Platinum Investment Management Ltd	94K	$813,365
Jump Financial, LLC	56K	$487,151
HRT Financial LP	24K	$211,000
Exoduspoint Capital Management, LPHedge fund	22K	$189,195
Gsa Capital Partners LLP	13K	$108,000
Bank Of Nova Scotia	12K	$104,838
Optiver Holding B.V.	414	$3,585

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 156
Ten largest holders: 73.5%
Index fund managers: 10.6%
Active managers and hedge funds: 49.0%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	29	5	7	2	+7.6M	+24.5%
Index fund managers	9	0	0	0	+3.0M	+56.7%
Other institutions	80	29	30	10	+683K	+2.2%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Meiragtx Holdings.

Only managers that filed a holdings report for both quarters are compared (167 here). 4 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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