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Mersana Therapeutics
MRSN

Overview Fund Activity

128 hedge funds and large institutions have $144M invested in Mersana Therapeutics in 2023 Q3 according to their latest regulatory filings, with 26 funds opening new positions, 35 increasing their positions, 43 reducing their positions, and 45 closing their positions.

Holders
128
Holders Change
-19
Holders Change %
-12.93%
% of All Funds
2.04%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
26
Increased
35
Reduced
43
Closed
45
Calls
$1.57M
Puts
$76K
Net Calls
+$1.49M
Net Calls Change
-$14.3M

Top Buyers

1
EC
1
EcoR1 Capital
California
$24.6M
2
VA
2
VR Adviser
New York
$14.4M
3
SCM
3
Silverarc Capital Management
Massachusetts
$6.35M
4
AAA
4
Affinity Asset Advisors
New York
$3.62M
5
PCM
5
Philosophy Capital Management
California
$2.98M

Top Sellers

1
O
1
OrbiMed
New York
$0
2
ACA
2
Avoro Capital Advisors
New York
$0
3
APM
3
Avidity Partners Management
Texas
$0
4
AG
4
Artal Group
Luxembourg
$0
5
DM
5
Deerfield Management
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$24.6M 19,364,688 +19,364,688 New
VA
2
VR Adviser
New York
$14.4M 11,328,000 +11,328,000 New
BCLSI
3
Bain Capital Life Sciences Investors
Massachusetts
$11M 8,663,673 – –
BlackRock
4
BlackRock
New York
$10.1M 7,972,660 +8,678 +0.1%
Vanguard Group
5
Vanguard Group
Pennsylvania
$7.86M 6,186,123 +461,504 +8%
BG
6
Bellevue Group
Switzerland
$6.63M 5,218,625 -800 -0%
Balyasny Asset Management
7
Balyasny Asset Management
Illinois
$6.4M 5,040,900 +201,385 +4%
SCM
8
Silverarc Capital Management
Massachusetts
$6.35M 5,000,000 +4,000,000 +400%
RSCM
9
Rock Springs Capital Management
Maryland
$4.32M 3,403,133 – –
AAA
10
Affinity Asset Advisors
New York
$3.62M 2,850,000 +2,850,000 New
PCM
11
Philosophy Capital Management
California
$2.98M 2,342,634 +2,342,634 New
State Street
12
State Street
Massachusetts
$2.94M 2,312,742 -2,592,407 -53%
CC
13
Commodore Capital
New York
$2.85M 2,244,378 +2,244,378 New
Millennium Management
14
Millennium Management
New York
$2.77M 2,177,650 +305,733 +16%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$2.74M 2,157,665 +151,983 +8%
Walleye Capital
16
Walleye Capital
New York
$2.57M 2,021,467 +1,866,568 +1,205%
BC
17
Boxer Capital
California
$2.54M 2,000,000 +1,000,000 +100%
Citadel Advisors
18
Citadel Advisors
Florida
$2.05M 1,614,723 +1,614,647 +2,124,536%
IC
19
Ikarian Capital
Texas
$2.01M 1,579,770 +1,529,770 +3,060%
5VM
20
5AM Venture Management
California
$1.66M 1,305,000 – –
WP
21
Woodline Partners
California
$1.65M 1,302,000 +1,302,000 New
BBA
22
Baker Bros. Advisors
New York
$1.38M 1,086,115 – –
ACM
23
Altium Capital Management
New York
$1.35M 1,059,136 +1,059,136 New
Northern Trust
24
Northern Trust
Illinois
$1.31M 1,030,586 -68,515 -6%
Morgan Stanley
25
Morgan Stanley
New York
$1.25M 986,017 +221,506 +29%
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