MREO

Mereo BioPharma
MREO

Overview Fund Activity

82 hedge funds and large institutions have $267M invested in Mereo BioPharma in 2025 Q2 according to their latest regulatory filings, with 11 funds opening new positions, 30 increasing their positions, 19 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
82
Holders Change
-7
Holders Change %
-7.87%
% of All Funds
1.1%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
11
Increased
30
Reduced
19
Closed
17
Calls
$8.29M
Puts
$3.35M
Net Calls
+$4.95M
Net Calls Change
+$3.2M

Top Buyers

1
FLSM
Frazier Life Sciences Management
California
+$4.39M
2
Goldman Sachs
Goldman Sachs
New York
+$2.61M
3
Aberdeen Group
Aberdeen Group
United Kingdom
+$2.28M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$1.95M
5
Citadel Advisors
Citadel Advisors
Florida
+$1.13M

Top Sellers

1
Janus Henderson Group
Janus Henderson Group
United Kingdom
-$13.7M
2
RSCM
Rock Springs Capital Management
Maryland
-$6.01M
3
Adage Capital Partners
Adage Capital Partners
Massachusetts
-$3.83M
4
Morgan Stanley
Morgan Stanley
New York
-$3.78M
5
UBS AM
UBS AM
Illinois
-$3.53M
Name Holding Trade Value Shares
Change 		Shares
Change %
VIA
51
Virtus Investment Advisers
Connecticut
$91.7K -$27.6K -10,182 -23%
ACM
52
Aquatic Capital Management
Illinois
$73K +$73K +26,930 New
QC
53
Quadrature Capital
United Kingdom
$69.1K +$7.38K +2,712 +12%
CC
54
Centiva Capital
New York
$67.8K – – –
SWP
55
Significant Wealth Partners
Illinois
$60.3K +$23K +8,490 +62%
GCM
56
Graham Capital Management
Connecticut
$57.4K -$76.5K -28,242 -57%
CSS
57
Cubist Systematic Strategies
Connecticut
$57.2K +$57.2K +21,099 New
Squarepoint
58
Squarepoint
New York
$56K +$7.42K +2,737 +15%
GSEP
59
Golden State Equity Partners
California
$53.9K – – –
FA
60
Forefront Analytics
Pennsylvania
$51.9K -$77.2K -28,492 -60%
OIA
61
OneDigital Investment Advisors
Kansas
$49.6K – – –
NFSG
62
Newbridge Financial Services Group
Florida
$35.2K +$5.42K +2,000 +18%
LFAS
63
Level Four Advisory Services
Texas
$27.1K – – –
MG
64
Marex Group
$27.1K +$27.1K +10,000 New
RhumbLine Advisers
65
RhumbLine Advisers
Massachusetts
$26.8K +$8.92K +3,290 +50%
GI
66
GAMMA Investing
California
$25.1K +$2.38K +877 +10%
CIAM
67
Caitong International Asset Management
Hong Kong
$12.3K +$8.29K +3,060 +206%
AAP
68
Arax Advisory Partners
Colorado
$10.8K – – –
AF
69
Allworth Financial
California
$4.44K +$371 +137 +9%
Raymond James Financial
70
Raymond James Financial
Florida
$4.26K +$4.26K +1,570 New
GWSG
71
GPS Wealth Strategies Group
Colorado
$4.07K – – –
SIA
72
Sit Investment Associates
Minnesota
$3K – – –
BIG
73
Brooklyn Investment Group
New York
$2.3K +$2.3K +849 New
EWA
74
EverSource Wealth Advisors
Alabama
$1.27K +$1.27K +470 New
MCM
75
MAI Capital Management
Ohio
$838 – – –
1 2
3
4