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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 %
Renaissance Technologies
26
Renaissance Technologies
New York
$1.18M 925,919 -122,000 -12%
DCMIC
27
Decheng Capital Management III (Cayman)
Cayman Islands
$1.15M 904,268 – –
DCM
28
DAFNA Capital Management
California
$932K 734,038 -76,807 -9%
NM
29
Newtyn Management
New York
$889K 700,000 +700,000 New
BCM
30
Bridgeway Capital Management
Texas
$739K 581,700 +581,700 New
Fidelity Investments
31
Fidelity Investments
Massachusetts
$736K 579,789 -899,708 -61%
SCM
32
Sarissa Capital Management
Connecticut
$699K 550,000 -2,082,900 -79%
RPAM
33
Rhenman & Partners Asset Management
Sweden
$508K 400,000 – –
Bank of New York Mellon
34
Bank of New York Mellon
New York
$477K 375,756 -915 -0.2%
Two Sigma Advisers
35
Two Sigma Advisers
New York
$458K 360,700 -217,400 -38%
Acadian Asset Management
36
Acadian Asset Management
Massachusetts
$449K 354,075 +354,075 New
BFM
37
Boothbay Fund Management
New York
$432K 340,545 +330,520 +3,297%
Goldman Sachs
38
Goldman Sachs
New York
$428K 337,053 -1,058,965 -76%
UOC
39
UBS O'Connor
Illinois
$376K 296,414 +296,414 New
Charles Schwab
40
Charles Schwab
California
$374K 294,405 -526,283 -64%
AI
41
Atom Investors
Texas
$372K 293,177 +293,177 New
Jane Street
42
Jane Street
New York
$347K 273,005 -41,478 -13%
JPMorgan Chase & Co
43
JPMorgan Chase & Co
New York
$339K 267,015 -1,176,779 -82%
PAM
44
Panagora Asset Management
Massachusetts
$320K 251,793 -19,708 -7%
Los Angeles Capital Management
45
Los Angeles Capital Management
California
$251K 197,470 +197,470 New
Susquehanna International Group
46
Susquehanna International Group
Pennsylvania
$230K 180,852 -111,465 -38%
Swiss National Bank
47
Swiss National Bank
Switzerland
$226K 178,096 – –
Verition Fund Management
48
Verition Fund Management
Connecticut
$208K 163,451 +163,451 New
RhumbLine Advisers
49
RhumbLine Advisers
Massachusetts
$203K 160,076 -4,795 -3%
Marshall Wace
50
Marshall Wace
United Kingdom
$200K 157,800 -2,553,510 -94%
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