Who Owns MEREO BIOPHARMA GROUP PLC (MREO)? -- Institutional Holders (2026-06-30)

77 institutions reported holding $18.3M of MEREO BIOPHARMA GROUP PLC (MREO) in SEC 13F filings for 2026-06-30. Largest institutional holders: Rubric Capital Management LP ($4.9M), 683 Capital Management, LLC ($3.7M), BANK OF AMERICA CORP /DE/ ($2.6M), Defilade Capital Management, L.P. ($2.4M), Newtyn Management, LLC ($953,100). Source: SEC Form 13F.

Rank	Institution	Value	Shares	Change
1	Rubric Capital Management LP	$4.9M	15.3M	Hold
2	683 Capital Management, LLC	$3.7M	11.8M	Trimmed
3	BANK OF AMERICA CORP /DE/	$2.6M	8.2M	Trimmed
4	Defilade Capital Management, L.P.	$2.4M	7.6M	Hold
5	Newtyn Management, LLC	$953,100	3.0M	Trimmed
6	Tejara Capital Ltd	$647,320	2.0M	Hold
7	UBS Group AG	$460,346	1.4M	Trimmed
8	TWO SIGMA INVESTMENTS, LP	$419,123	1.3M	Added
9	CITADEL ADVISORS LLC	$317,719	1.0M	Added
10	EcoR1 Capital, LLC	$317,700	1.0M	Trimmed
11	JANE STREET GROUP, LLC	$249,949	786,744	Added
12	Ishara Investments LP	$244,232	768,750	New
13	Wealthspire Advisors, LLC	$243,041	765,000	Trimmed
14	SUSQUEHANNA INTERNATIONAL GROUP, LLP	$137,996	432,770	Trimmed
15	Rangeley Capital, LLC	$104,587	329,200	Hold
16	GROUP ONE TRADING LLC	$73,680	231,915	Trimmed
17	MARSHALL WACE, LLP	$57,563	179,884	Trimmed
18	XTX Topco Ltd	$55,433	174,481	Added
19	SIMPLEX TRADING, LLC	$52,494	165,080	Trimmed
20	STATE STREET CORP	$42,817	134,772	Added
21	NOMURA HOLDINGS INC	$33,155	104,361	New
22	James J. Burns & Company, LLC	$30,309	95,400	New
23	Quarry LP	$29,784	93,750	New
24	GOLDMAN SACHS GROUP INC	$27,062	85,180	New
25	JMN Financial LLC	$24,383	76,748	New

Source: SEC Form 13F filings · as of 2026-06-30