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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 %
Northern Trust
26
Northern Trust
Illinois
$3.62M 1,099,101 +214,468 +24%
BBA
27
Baker Bros. Advisors
New York
$3.57M 1,086,115 -800,000 -42%
Renaissance Technologies
28
Renaissance Technologies
New York
$3.45M 1,047,919 -202,600 -16%
SCM
29
Silverarc Capital Management
Massachusetts
$3.29M 1,000,000 +459,941 +85%
BC
30
Boxer Capital
California
$3.29M 1,000,000 +1,000,000 New
D.E. Shaw & Co
31
D.E. Shaw & Co
New York
$3.24M 985,739 -820,360 -45%
Hudson Bay Capital Management
32
Hudson Bay Capital Management
Connecticut
$3.17M 962,359 +637,359 +196%
DCMIC
33
Decheng Capital Management III (Cayman)
Cayman Islands
$2.98M 904,268 – –
Charles Schwab
34
Charles Schwab
California
$2.7M 820,688 +91,017 +12%
DCM
35
DAFNA Capital Management
California
$2.67M 810,845 +299,982 +59%
Morgan Stanley
36
Morgan Stanley
New York
$2.52M 764,511 -1,134,122 -60%
RI
37
RTW Investments
New York
$2.02M 614,838 +614,838 New
Two Sigma Advisers
38
Two Sigma Advisers
New York
$1.9M 578,100 -226,400 -28%
Ameriprise
39
Ameriprise
Minnesota
$1.88M 572,273 +572,273 New
First Manhattan
40
First Manhattan
New York
$1.87M 569,594 +569,594 New
RAM
41
Readystate Asset Management
Illinois
$1.87M 567,300 +567,300 New
KCM
42
Kennedy Capital Management
Missouri
$1.83M 555,279 +63,215 +13%
Adage Capital Partners
43
Adage Capital Partners
Massachusetts
$1.65M 500,000 +500,000 New
TLP
44
Tri Locum Partners
New York
$1.41M 428,307 +428,307 New
SFM
45
Sphera Funds Management
Israel
$1.38M 418,562 +407,941 +3,841%
Squarepoint
46
Squarepoint
New York
$1.38M 418,224 +405,988 +3,318%
RPAM
47
Rhenman & Partners Asset Management
Sweden
$1.32M 400,000 +50,000 +14%
GCP
48
GSA Capital Partners
United Kingdom
$1.28M 387,591 +183,115 +90%
Bank of New York Mellon
49
Bank of New York Mellon
New York
$1.24M 376,671 +6,885 +2%
Rafferty Asset Management
50
Rafferty Asset Management
New York
$1.11M 336,656 -149,052 -31%
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