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Mersana Therapeutics
MRSN

Overview Fund Activity

147 hedge funds and large institutions have $370M invested in Mersana Therapeutics in 2023 Q2 according to their latest regulatory filings, with 33 funds opening new positions, 56 increasing their positions, 41 reducing their positions, and 43 closing their positions.

Holders
147
Holders Change
-10
Holders Change %
-6.37%
% of All Funds
2.32%
Holding in Top 10
1
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-66.67%
% of All Funds
0.02%
New
33
Increased
56
Reduced
41
Closed
43
Calls
$18.1M
Puts
$2.24M
Net Calls
+$15.8M
Net Calls Change
+$7.58M

Top Buyers

1
Balyasny Asset Management
1
Balyasny Asset Management
Illinois
$15.9M
2
DM
2
Deerfield Management
New York
$9.49M
3
LGM
3
Logos Global Management
California
$9.21M
4
RG
4
Redmile Group
California
$5.59M
5
Fidelity Investments
5
Fidelity Investments
Massachusetts
$4.87M

Top Sellers

1
B
1
Braidwell
Connecticut
$0
2
O
2
OrbiMed
New York
$23.7M
3
Goldman Sachs
3
Goldman Sachs
New York
$4.59M
4
State Street
4
State Street
Massachusetts
$16.1M
5
ABG
5
Ally Bridge Group
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
BCLSI
1
Bain Capital Life Sciences Investors
Massachusetts
$28.5M 8,663,673 – –
BlackRock
2
BlackRock
New York
$26.2M 7,963,982 +490,160 +7%
O
3
OrbiMed
New York
$23.7M 7,214,937 -1,796,500 -20%
ACA
4
Avoro Capital Advisors
New York
$21M 6,375,000 -1,175,000 -16%
Vanguard Group
5
Vanguard Group
Pennsylvania
$18.8M 5,724,619 +1,086,127 +23%
BG
6
Bellevue Group
Switzerland
$17.2M 5,219,425 +919,806 +21%
State Street
7
State Street
Massachusetts
$16.1M 4,905,149 -1,507,073 -24%
Balyasny Asset Management
8
Balyasny Asset Management
Illinois
$15.9M 4,839,515 +4,839,515 New
APM
9
Avidity Partners Management
Texas
$12.5M 3,790,000 +356,767 +10%
RSCM
10
Rock Springs Capital Management
Maryland
$11.2M 3,403,133 -700,670 -17%
AG
11
Artal Group
Luxembourg
$9.97M 3,029,555 +813,767 +37%
DM
12
Deerfield Management
New York
$9.49M 2,885,400 +2,885,400 New
LGM
13
Logos Global Management
California
$9.21M 2,800,000 +2,800,000 New
Marshall Wace
14
Marshall Wace
United Kingdom
$8.92M 2,711,310 +214,600 +9%
SCM
15
Sarissa Capital Management
Connecticut
$8.66M 2,632,900 -1,167,100 -31%
CS
16
Candriam SCA
Luxembourg
$7.95M 2,415,477 -547,371 -18%
Geode Capital Management
17
Geode Capital Management
Massachusetts
$6.6M 2,005,682 +206,835 +11%
Millennium Management
18
Millennium Management
New York
$6.16M 1,871,917 +610,863 +48%
RG
19
Redmile Group
California
$5.59M 1,698,626 +1,698,626 New
Fidelity Investments
20
Fidelity Investments
Massachusetts
$4.87M 1,479,497 +1,355,682 +1,095%
JPMorgan Chase & Co
21
JPMorgan Chase & Co
New York
$4.75M 1,443,794 +1,322,229 +1,088%
Goldman Sachs
22
Goldman Sachs
New York
$4.59M 1,396,018 -1,543,522 -53%
5VM
23
5AM Venture Management
California
$4.29M 1,305,000 +120,000 +10%
Nuveen Asset Management
24
Nuveen Asset Management
Illinois
$4.08M 1,241,591 +104 +0%
Deutsche Bank
25
Deutsche Bank
Germany
$3.74M 1,137,743 -9,811 -0.9%
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