MREO

Mereo BioPharma
MREO

Overview Fund Activity

81 hedge funds and large institutions have $266M invested in Mereo BioPharma in 2025 Q2 according to their latest regulatory filings, with 11 funds opening new positions, 29 increasing their positions, 19 reducing their positions, and 17 closing their positions.

Holders
81
Holders Change
-8
Holders Change %
-8.99%
% of All Funds
1.09%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
11
Increased
29
Reduced
19
Closed
17
Calls
$7.93M
Puts
$3.04M
Net Calls
+$4.89M
Net Calls Change
+$3.14M

Top Buyers

1
FLSM
1
Frazier Life Sciences Management
California
$25.6M
2
Goldman Sachs
2
Goldman Sachs
New York
$8.37M
3
Aberdeen Group
3
Aberdeen Group
United Kingdom
$8.21M
4
Fidelity Investments
4
Fidelity Investments
Massachusetts
$4.01M
5
Citadel Advisors
5
Citadel Advisors
Florida
$2.06M

Top Sellers

1
Janus Henderson Group
1
Janus Henderson Group
United Kingdom
$48.1M
2
RSCM
2
Rock Springs Capital Management
Maryland
$12.1M
3
Adage Capital Partners
3
Adage Capital Partners
Massachusetts
$0
4
Morgan Stanley
4
Morgan Stanley
New York
$2.13M
5
UBS AM
5
UBS AM
Illinois
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Bank of America
26
Bank of America
North Carolina
$1.19M 438,661 -9 -0%
MAM
27
Monaco Asset Management
Monaco
$1.07M 395,000 -21,468 -5%
UBS Group
28
UBS Group
Switzerland
$1.01M 373,505 -558,516 -60%
CF
29
Cantor Fitzgerald
New York
$929K 342,957 -12,043 -3%
DMKJ
30
David M. Knott Jr
$865K 319,337 – –
PP
31
Paloma Partners
Connecticut
$804K 296,659 +296,659 New
KCM
32
Knoll Capital Management
Florida
$706K 260,470 – –
Jane Street
33
Jane Street
New York
$671K 247,441 +102,638 +71%
Simplex Trading
34
Simplex Trading
Illinois
$545K 201,141 +197,024 +4,786%
CM
35
Caption Management
Oklahoma
$535K 197,599 +92,816 +89%
Two Sigma Advisers
36
Two Sigma Advisers
New York
$392K 144,600 +115,300 +394%
Group One Trading
37
Group One Trading
Illinois
$378K 139,559 +105,278 +307%
DIG
38
Dauntless Investment Group
New Hampshire
$363K 134,122 +134,122 New
Nomura Holdings
39
Nomura Holdings
Japan
$339K 125,000 +125,000 New
TE
40
Tema ETFs
New York
$278K 102,583 -552,083 -84%
NIM
41
NEOS Investment Management
Connecticut
$278K 102,583 -552,083 -84%
Geode Capital Management
42
Geode Capital Management
Massachusetts
$251K 92,534 +378 +0.4%
XT
43
XTX Topco
Cayman Islands
$188K 69,341 +69,341 New
Point72 Asset Management
44
Point72 Asset Management
Connecticut
$160K 59,200 +23,384 +65%
JGC
45
J. Goldman & Co
New York
$142K 52,384 -27,003 -34%
State Street
46
State Street
Massachusetts
$122K 44,942 -717 -2%
CHAM
47
Clear Harbor Asset Management
Connecticut
$114K 42,000 – –
AF
48
Avanza Fonder
Sweden
$104K 38,235 +10,114 +36%
PI
49
PFG Investments
New York
$101K 37,433 – –
VIA
50
Virtus Investment Advisers
Connecticut
$91.7K 33,825 -10,182 -23%
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