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MREO

Mereo BioPharma

63 hedge funds and large institutions have $24.9M invested in Mereo BioPharma in 2026 Q1 according to their latest regulatory filings, with 15 funds opening new positions, 15 increasing their positions, 16 reducing their positions, and 21 closing their positions.

New
Increased
Maintained
Reduced
Closed

49% more call options, than puts

Call options by funds: $315K | Put options by funds: $212K

8.39% more ownership

Funds ownership: 38.98%47.37% (+8.4%)

4% less capital invested

Capital invested by funds: $25.8M → $24.9M (-$955K)

6% less repeat investments, than reductions

Existing positions increased: 15 | Existing positions reduced: 16

10% less funds holding

Funds holding: 7063 (-7)

29% less first-time investments, than exits

New positions opened: 15 | Existing positions closed: 21

Holders
63
Holders Change
-7
Holders Change %
-10%
% of All Funds
0.78%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
15
Increased
15
Reduced
16
Closed
21
Calls
$315K
Puts
$212K
Net Calls
+$103K
Net Calls Change
-$675K
Name Holding Trade Value Shares
Change
Change in
Stake
RCMNY
1
Rubric Capital Management (New York)
New York
$5.05M
EC
2
EcoR1 Capital
California
$4.41M +$2.37M +5,512,389 +70%
6CM
3
683 Capital Management
New York
$3.96M -$1.3M -3,025,000 -20%
Bank of America
4
Bank of America
North Carolina
$2.7M +$3.51M +8,169,795 +32,048%
DCM
5
Defilade Capital Management
California
$2.49M +$3.24M +7,558,756 New
NM
6
Newtyn Management
New York
$2.34M +$2.94M +6,854,434 +3,052%
Millennium Management
7
Millennium Management
New York
$1.17M +$1.49M +3,475,457 +4,155%
TC
8
Tejara Capital
United Kingdom
$672K -$52.4K -122,161 -6%
UBS Group
9
UBS Group
Switzerland
$492K -$29.5K -68,803 -4%
WANY
10
Wealthspire Advisors (New York)
New York
$263K +$342K +796,036 New
Marshall Wace
11
Marshall Wace
United Kingdom
$227K +$295K +686,987 New
Group One Trading
12
Group One Trading
Illinois
$111K -$45.4K -105,809 -24%
RC
13
Rangeley Capital
Connecticut
$109K -$14.9K -34,800 -10%
BlackRock
14
BlackRock
New York
$100K -$4.13K -9,622 -3%
DMKJ
15
David M. Knott Jr
$99.1K
Acadian Asset Management
16
Acadian Asset Management
Massachusetts
$68K +$63.4K +147,649 +240%
Susquehanna International Group
17
Susquehanna International Group
Pennsylvania
$64.7K +$84.1K +195,920 New
Two Sigma Investments
18
Two Sigma Investments
New York
$62K -$145K -337,286 -64%
ACM
19
ADAR1 Capital Management
Texas
$49.5K
Jane Street
20
Jane Street
New York
$46.2K -$92.7K -216,031 -61%
State Street
21
State Street
Massachusetts
$44K +$1.17K +2,736 +2%
FA
22
Forefront Analytics
Pennsylvania
$42.2K +$41.2K +96,010 +302%
VIA
23
Virtus Investment Advisers
Connecticut
$41.5K +$1.32K +3,067 +3%
Geode Capital Management
24
Geode Capital Management
Massachusetts
$30.5K
XT
25
XTX Topco
Cayman Islands
$27.9K +$36.2K +84,469 New