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Mersana Therapeutics
MRSN

Overview Fund Activity

157 hedge funds and large institutions have $437M invested in Mersana Therapeutics in 2023 Q1 according to their latest regulatory filings, with 26 funds opening new positions, 51 increasing their positions, 44 reducing their positions, and 20 closing their positions.

Holders
157
Holders Change
+5
Holders Change %
+3.29%
% of All Funds
2.51%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
26
Increased
51
Reduced
44
Closed
20
Calls
$8.89M
Puts
$662K
Net Calls
+$8.23M
Net Calls Change
+$8.18M

Top Buyers

1
APM
1
Avidity Partners Management
Texas
$14.1M
2
BBA
2
Baker Bros. Advisors
New York
$7.75M
3
B
3
Braidwell
Connecticut
$13.8M
4
5VM
4
5AM Venture Management
California
$4.87M
5
Goldman Sachs
5
Goldman Sachs
New York
$12.1M

Top Sellers

1
Millennium Management
1
Millennium Management
New York
$5.18M
2
ACP
2
Acuta Capital Partners
California
$247K
3
WP
3
Woodline Partners
California
$0
4
LP
4
LMR Partners
United Kingdom
$0
5
OM
5
Opaleye Management
Massachusetts
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Qube Research & Technologies (QRT)
51
Qube Research & Technologies (QRT)
United Kingdom
$1.03M 251,796 +165,410 +191%
Walleye Capital
52
Walleye Capital
New York
$918K 223,388 +223,388 New
BNP Paribas Financial Markets
53
BNP Paribas Financial Markets
France
$911K 221,708 +99,032 +81%
PAM
54
Panagora Asset Management
Massachusetts
$889K 216,197 +25,234 +13%
Two Sigma Investments
55
Two Sigma Investments
New York
$841K 204,584 -413,245 -67%
GCP
56
GSA Capital Partners
United Kingdom
$840K 204,476 +172,235 +534%
Barclays
57
Barclays
United Kingdom
$815K 198,033 -34,055 -15%
UBS Group
58
UBS Group
Switzerland
$762K 185,399 -103,204 -36%
Swiss National Bank
59
Swiss National Bank
Switzerland
$708K 172,296 -15,400 -8%
TCM
60
Tekla Capital Management
Massachusetts
$667K 162,383 +162,383 New
RhumbLine Advisers
61
RhumbLine Advisers
Massachusetts
$651K 158,341 +5,376 +4%
Macquarie Group
62
Macquarie Group
Australia
$617K 150,000 – –
Fidelity Investments
63
Fidelity Investments
Massachusetts
$509K 123,815 +438 +0.4%
JPMorgan Chase & Co
64
JPMorgan Chase & Co
New York
$500K 121,565 -265,258 -69%
T. Rowe Price Associates
65
T. Rowe Price Associates
Maryland
$500K 121,377 +858 +0.7%
Citadel Advisors
66
Citadel Advisors
Florida
$463K 112,661 -512,915 -82%
California State Teachers Retirement System (CalSTRS)
67
California State Teachers Retirement System (CalSTRS)
California
$430K 104,531 +58 +0.1%
CS
68
Credit Suisse
Switzerland
$427K 103,879 +6,405 +7%
UBS AM
69
UBS AM
Illinois
$422K 102,575 – –
AllianceBernstein
70
AllianceBernstein
Tennessee
$410K 99,700 – –
Wells Fargo
71
Wells Fargo
California
$400K 97,275 +97,275 New
Allianz Asset Management
72
Allianz Asset Management
Germany
$372K 90,500 +30,400 +51%
PA
73
Profund Advisors
Maryland
$370K 90,095 +90,095 New
HT
74
HAP Trading
New York
$368K 89,563 +89,563 New
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
75
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$345K 84,000 – –
1 2
3
4 5