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Mersana Therapeutics
MRSN

Overview Fund Activity

132 hedge funds and large institutions have $1.14B invested in Mersana Therapeutics in 2021 Q1 according to their latest regulatory filings, with 18 funds opening new positions, 55 increasing their positions, 46 reducing their positions, and 36 closing their positions.

Holders
132
Holders Change
-19
Holders Change %
-12.58%
% of All Funds
2.32%
Holding in Top 10
3
Holding in Top 10 Change
-3
Holding in Top 10 Change %
-50%
% of All Funds
0.05%
New
18
Increased
55
Reduced
46
Closed
36
Calls
$9.35M
Puts
$9.73M
Net Calls
-$376K
Net Calls Change
-$7.16M

Top Buyers

1
Westfield Capital Management
1
Westfield Capital Management
Massachusetts
$32.3M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$100M
3
O
3
OrbiMed
New York
$30.6M
4
SCM
4
Sarissa Capital Management
Connecticut
$64.8M
5
BG
5
Bellevue Group
Switzerland
$46.1M

Top Sellers

1
CCM
1
Consonance Capital Management
New York
$0
2
Janus Henderson Group
2
Janus Henderson Group
United Kingdom
$0
3
Citadel Advisors
3
Citadel Advisors
Florida
$8.71M
4
Invesco
4
Invesco
Georgia
$6.67M
5
GPP
5
Great Point Partners
Connecticut
$0
Name Market Value Shares Shares
Change 		Shares
Change %
URS
151
Utah Retirement Systems
Utah
– – -30,280 Closed
Massachusetts Financial Services
152
Massachusetts Financial Services
Massachusetts
– – -29,724 Closed
VF
153
Virtu Financial
New York
– – -22,888 Closed
LMGAM
154
Liberty Mutual Group Asset Management
Massachusetts
– – -18,925 Closed
OTPPB
155
Ontario Teachers' Pension Plan Board
Ontario, Canada
– – -18,925 Closed
BFM
156
Boothbay Fund Management
New York
– – -15,328 Closed
VRS
157
Virginia Retirement Systems
Virginia
– – -15,100 Closed
AC
158
Athanor Capital
New York
– – -15,053 Closed
Norges Bank
159
Norges Bank
Norway
– – -13,412 Closed
HT
160
HAP Trading
New York
– – -11,305 Closed
AG
161
Algert Global
California
– – -9,312 Closed
Ameriprise
162
Ameriprise
Minnesota
– – -8,435 Closed
AB
163
Amalgamated Bank
New York
– – -8,324 Closed
Handelsbanken Fonder
164
Handelsbanken Fonder
Sweden
– – -7,600 Closed
Russell Investments Group
165
Russell Investments Group
United Kingdom
– – -6,690 Closed
Federated Hermes
166
Federated Hermes
Pennsylvania
– – -185 Closed
US Bancorp
167
US Bancorp
Minnesota
– – -57 Closed
TCOV
168
Trust Company of Vermont
Vermont
– – -40 Closed
Nomura Asset Management
169
Nomura Asset Management
Japan
– – – –
CFGS
170
Concourse Financial Group Securities
Alabama
– – – –
Wolverine Trading
171
Wolverine Trading
Illinois
– – – –
IA
172
IFP Advisors
Florida
– – – –
3 4 5 6
7