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Mersana Therapeutics
MRSN

Overview Fund Activity

106 hedge funds and large institutions have $273M invested in Mersana Therapeutics in 2023 Q4 according to their latest regulatory filings, with 19 funds opening new positions, 33 increasing their positions, 35 reducing their positions, and 40 closing their positions.

Holders
106
Holders Change
-22
Holders Change %
-17.19%
% of All Funds
1.55%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.03%
New
19
Increased
33
Reduced
35
Closed
40
Calls
$962K
Puts
$1M
Net Calls
-$41K
Net Calls Change
-$1.53M

Top Buyers

1
Morgan Stanley
1
Morgan Stanley
New York
$19.2M
2
NI
2
Nextech Invest
Switzerland
$13.9M
3
Balyasny Asset Management
3
Balyasny Asset Management
Illinois
$22.5M
4
ACP
4
Acuta Capital Partners
California
$5.49M
5
SCM
5
Silverarc Capital Management
Massachusetts
$14.9M

Top Sellers

1
BG
1
Bellevue Group
Switzerland
$0
2
AAA
2
Affinity Asset Advisors
New York
$2.32M
3
CC
3
Commodore Capital
New York
$0
4
Walleye Capital
4
Walleye Capital
New York
$0
5
BC
5
Boxer Capital
California
$0
Name Market Value Shares Shares
Change 		Shares
Change %
EC
1
EcoR1 Capital
California
$44.9M 19,364,688 – –
VA
2
VR Adviser
New York
$26.3M 11,328,000 – –
Balyasny Asset Management
3
Balyasny Asset Management
Illinois
$22.5M 9,698,147 +4,657,247 +92%
BCLSI
4
Bain Capital Life Sciences Investors
Massachusetts
$20.1M 8,663,673 – –
Morgan Stanley
5
Morgan Stanley
New York
$19.2M 8,269,092 +7,283,075 +739%
BlackRock
6
BlackRock
New York
$18.2M 7,844,282 -128,378 -2%
SCM
7
Silverarc Capital Management
Massachusetts
$14.9M 6,420,136 +1,420,136 +28%
Vanguard Group
8
Vanguard Group
Pennsylvania
$14.5M 6,237,588 +51,465 +0.8%
NI
9
Nextech Invest
Switzerland
$13.9M 5,978,327 +5,978,327 New
Millennium Management
10
Millennium Management
New York
$7.88M 3,394,440 +1,216,790 +56%
RSCM
11
Rock Springs Capital Management
Maryland
$7.07M 3,046,782 -356,351 -10%
ACP
12
Acuta Capital Partners
California
$5.49M 2,368,000 +2,268,393 +2,277%
State Street
13
State Street
Massachusetts
$5.4M 2,329,434 +16,692 +0.7%
Geode Capital Management
14
Geode Capital Management
Massachusetts
$5.33M 2,297,136 +139,471 +6%
Citadel Advisors
15
Citadel Advisors
Florida
$4.47M 1,926,931 +312,208 +19%
5VM
16
5AM Venture Management
California
$3.03M 1,305,000 – –
PCM
17
Philosophy Capital Management
California
$2.93M 1,264,567 -1,078,067 -46%
SSA
18
Schonfeld Strategic Advisors
New York
$2.64M 1,139,407 +1,139,407 New
Deutsche Bank
19
Deutsche Bank
Germany
$2.64M 1,139,232 +1,076,405 +1,713%
BBA
20
Baker Bros. Advisors
New York
$2.52M 1,086,115 – –
AAA
21
Affinity Asset Advisors
New York
$2.32M 1,000,000 -1,850,000 -65%
Northern Trust
22
Northern Trust
Illinois
$2.16M 931,406 -99,180 -10%
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$2.16M 930,607 +930,607 New
Renaissance Technologies
24
Renaissance Technologies
New York
$2.01M 865,731 -60,188 -7%
AI
25
Atom Investors
Texas
$1.8M 774,659 +481,482 +164%
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