Who Owns Mereo BioPharma Group plc (MREO)?Hedge Fund & Institutional Holders

$0.39-0.00 (-0.49%)HealthcareNASDAQ

Institutional Holders

50

as of Q4 2025

Total Institutional Value

$6.378626032732539e+88T

% of Float Held

—

QoQ Change in Holders

+15 / -11

Price History

$0.29$1.37$2.45$3.54$4.62Sep 24Jun 25Mar 26

MREO — Biggest New Institutional Buyers This Quarter

FundActionShares AddedValue Added
EcoR1 Capital, LLCNew Position+7.9M+$3.3M
Tejara Capital LtdNew Position+2.2M+$899K
EntryPoint Capital, LLCNew Position+401K+$166K
LUMINUS MANAGEMENT LLCNew Position+395K+$164K
Rangeley Capital, LLCNew Position+364K+$151K
SPHERA FUNDS MANAGEMENT LTD.New Position+255K+$106K
Newtyn Management, LLCNew Position+225K+$93K
ADAR1 Capital Management, LLCNew Position+150K+$62K
Baader Bank AktiengesellschaftNew Position+129K+$33K
Significant Wealth Partners LLCNew Position+22K+$9K
Three Magnolias Financial Advisors, LLCNew Position+19K+$7K
PFG Investments, LLCNew Position+17K+$6K
AE Wealth Management LLCNew Position+13K+$5K
QRG CAPITAL MANAGEMENT, INC.New Position+14K+$5K
BALYASNY ASSET MANAGEMENT L.P.New Position+1.3M+$0

MREO — Institutions Reducing or Closing Positions

FundActionShares SoldValue Sold
JANUS HENDERSON GROUP PLCClosed Position-16.3M-$33.6B
Frazier Life Sciences Management, L.P.Closed Position-9.4M-$19.4B
MANGROVE PARTNERS IM, LLCClosed Position-7.8M-$16.0B
Aberdeen Group plcClosed Position-5.5M-$11.4B
Rock Springs Capital Management LPClosed Position-4.6M-$9.4B
Clearline Capital LPClosed Position-3.8M-$7.9B
ALKEON CAPITAL MANAGEMENT LLCClosed Position-3.7M-$7.6B
MORGAN STANLEYDecreased-2.1M-$6.9B
CITADEL ADVISORS LLCClosed Position-3.2M-$6.5B
GOLDMAN SACHS GROUP INCDecreased-2.3M-$4.9B
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLCDecreased-143K-$3.9B
FMR LLCClosed Position-1.5M-$3.0B
Blue Owl Capital Holdings LPClosed Position-1.3M-$2.6B
TWO SIGMA INVESTMENTS, LPDecreased-563K-$2.2B
MARSHALL WACE, LLPClosed Position-768K-$1.6B

Top Institutional Holders(Q4 2025)

#FundSharesValue% of PortfolioType
1Rubric Capital Management LP15,307,347$6.4M0.08%Share
2683 Capital Management, LLC15,025,000$6.3M0.27%Share
3EcoR1 Capital, LLC7,856,466$3.3M0.15%Share
4Schonfeld Strategic Advisors LLC6,090,381$2.5M0.01%Share
5Tejara Capital Ltd2,159,681$899K0.21%Share
6DIADEMA PARTNERS LP1,999,500$833K0.14%Call
7Logos Global Management LP1,850,000$770K0.05%Share
8Monaco Asset Management SAM1,585,214$660K0.11%Share
9UBS Group AG1,321,648$551K0.00%Share
10DLD Asset Management, LP746,000$310K0.02%Call
11GROUP ONE TRADING LLC574,000$239K0.00%Put
12GROUP ONE TRADING LLC441,636$184K0.00%Share
13EntryPoint Capital, LLC400,700$166K0.06%Share
14LUMINUS MANAGEMENT LLC395,000$164K0.14%Share
15Rangeley Capital, LLC364,000$151K0.13%Share
16Knott David M Jr300,337$125K0.06%Share
17SPHERA FUNDS MANAGEMENT LTD.255,400$106K0.02%Share
18Newtyn Management, LLC224,622$93K0.01%Share
19GROUP ONE TRADING LLC152,400$63K0.00%Call
20ADAR1 Capital Management, LLC150,000$62K0.00%Share
21UBS Group AG146,937$61K0.00%Share
22Virtus Investment Advisers, LLC122,595$51K0.01%Share
23Baader Bank Aktiengesellschaft128,742$33K0.00%Share
24UBS Group AG78,521$32K0.00%Share
25Caption Management, LLC50,000$20K0.00%Share
26Forefront Analytics, LLC31,768$13K0.01%Share
27Centiva Capital, LP25,000$10K0.00%Share
28Significant Wealth Partners LLC21,689$9K0.01%Share
29Newbridge Financial Services Group, Inc.17,000$7K0.00%Share
30Three Magnolias Financial Advisors, LLC19,000$7K0.00%Share
31PFG Investments, LLC16,650$6K0.00%Share
32AE Wealth Management LLC12,563$5K0.00%Share
33QRG CAPITAL MANAGEMENT, INC.13,503$5K0.00%Share
34UBS Group AG11,825$4K0.00%Share
35GAMMA Investing LLC9,561$3K0.00%Share
36CITADEL ADVISORS LLC617,200$00.00%Put
37SUSQUEHANNA INTERNATIONAL GROUP, LLP36,300$00.00%Put
38SUSQUEHANNA INTERNATIONAL GROUP, LLP657,800$00.00%Call
39TWO SIGMA ADVISERS, LP251,900$00.00%Share
40Leonteq Securities AG100,000$00.00%Share
41BANK OF AMERICA CORP /DE/25,486$00.00%Share
42BANK OF AMERICA CORP /DE/6$00.00%Share
43TORONTO DOMINION BANK5,500$00.00%Share
44MAI Capital Management309$00.00%Share
45Arax Advisory Partners4,000$00.00%Share
46OneDigital Investment Advisors LLC18,300$00.00%Share
47BNP PARIBAS FINANCIAL MARKETS3$00.00%Share
48Clear Harbor Asset Management, LLC35,000$00.00%Share
49ACADIAN ASSET MANAGEMENT LLC61,435$00.00%Share
50New England Capital Financial Advisors LLC300$00.00%Share

MREO Institutional Ownership History

QuarterHoldersTotal ValueChange
Q4 202569$22.6M-4
Q3 202573$199.4B+6
Q2 202567$246.3B-22
Q1 202589$250.2B-1
Q4 202490$787.7B+22
Q3 202468$253.9T-3
Q2 202471$223.9T+3
Q1 202468$169.4T—

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As of Q4 2025, 50 institutional investors hold MREO (Mereo BioPharma Group plc). The largest holder is Rubric Capital Management LP with $6.4M in shares. This quarter, 15 institutions opened new positions and 11 closed their positions.

Frequently Asked Questions

How many hedge funds own MREO?

As of Q4 2025, 50 institutional investors report holding MREO (Mereo BioPharma Group plc) in their 13F filings.

Who is the largest institutional holder of MREO?

The largest institutional holder of MREO is Rubric Capital Management LP with $6.4M in shares.

Is institutional ownership of MREO increasing or decreasing?

This quarter, 15 institutions opened new positions in MREO and 11 closed their positions.