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Mersana Therapeutics
MRSN

Overview Fund Activity

151 hedge funds and large institutions have $1.83B invested in Mersana Therapeutics in 2020 Q4 according to their latest regulatory filings, with 34 funds opening new positions, 54 increasing their positions, 45 reducing their positions, and 18 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
151
Holders Change
+16
Holders Change %
+11.85%
% of All Funds
2.68%
Holding in Top 10
6
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-25%
% of All Funds
0.11%
New
34
Increased
54
Reduced
45
Closed
18
Calls
$12.1M
Puts
$5.27M
Net Calls
+$6.78M
Net Calls Change
+$946K

Top Buyers

1
BG
Bellevue Group
Switzerland
$51.3M
2
Citadel Advisors
Citadel Advisors
Florida
$52M
3
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$87.9M
4
Wellington Management Group
Wellington Management Group
Massachusetts
$124M
5
BlackRock
BlackRock
New York
$213M

Top Sellers

1
NMC
NEA Management Company
Maryland
$0
2
CCM
Consonance Capital Management
New York
$37.3M
3
Deutsche Bank
Deutsche Bank
Germany
$6.03M
4
O
OrbiMed
New York
$20.6M
5
APM
Avidity Partners Management
Texas
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$213M +$19.6M +29,432 +10%
ACA
2
Avoro Capital Advisors
New York
$181M – – –
Wellington Management Group
3
Wellington Management Group
Massachusetts
$124M +$22.9M +34,490 +23%
BCLSI
4
Bain Capital Life Sciences Investors
Massachusetts
$91.7M – – –
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$87.9M +$39.3M +59,029 +81%
State Street
6
State Street
Massachusetts
$84M +$5.53M +8,318 +7%
Vanguard Group
7
Vanguard Group
Pennsylvania
$81.7M +$6.06M +9,113 +8%
SCM
8
Sarissa Capital Management
Connecticut
$77.9M +$2.39M +3,600 +3%
RSCM
9
Rock Springs Capital Management
Maryland
$54.9M +$4.74M +7,130 +9%
Citadel Advisors
10
Citadel Advisors
Florida
$52M +$40.9M +61,473 +367%
BG
11
Bellevue Group
Switzerland
$51.3M +$51.3M +77,040 New
Alkeon Capital Management
12
Alkeon Capital Management
New York
$48M +$6.78M +10,193 +16%
PAMU
13
Pictet Asset Management (UK)
United Kingdom
$45.8M +$9.04M +13,582 +25%
CCM
14
Consonance Capital Management
New York
$37.3M -$55M -82,659 -60%
Invesco
15
Invesco
Georgia
$35.4M +$5.67M +8,527 +19%
AG
16
Artal Group
Luxembourg
$31.9M +$5.32M +8,000 +20%
CS
17
Candriam SCA
Luxembourg
$29.9M +$14.2M +21,378 +91%
Goldman Sachs
18
Goldman Sachs
New York
$27.7M +$11.8M +17,731 +74%
Fidelity Investments
19
Fidelity Investments
Massachusetts
$26.2M +$2.85M +4,277 +12%
Point72 Asset Management
20
Point72 Asset Management
Connecticut
$24.5M -$3.24M -4,877 -12%
Janus Henderson Group
21
Janus Henderson Group
United Kingdom
$24.5M +$273K +410 +1%
Geode Capital Management
22
Geode Capital Management
Massachusetts
$22.9M +$807K +1,213 +4%
RCP
23
Rho Capital Partners
New York
$21.2M – – –
O
24
OrbiMed
New York
$20.6M -$14.8M -22,220 -42%
ACP
25
Acuta Capital Partners
California
$18.5M +$705K +1,060 +4%
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