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Mersana Therapeutics
MRSN

Overview Fund Activity

130 hedge funds and large institutions have $1.53B invested in Mersana Therapeutics in 2020 Q2 according to their latest regulatory filings, with 54 funds opening new positions, 50 increasing their positions, 23 reducing their positions, and 6 closing their positions.

Holders
130
Holders Change
+48
Holders Change %
+58.54%
% of All Funds
2.67%
Holding in Top 10
9
Holding in Top 10 Change
+5
Holding in Top 10 Change %
+125%
% of All Funds
0.19%
New
54
Increased
50
Reduced
23
Closed
6
Calls
$7.97M
Puts
$1.35M
Net Calls
+$6.62M
Net Calls Change
+$6.68M

Top Buyers

1
ACA
1
Avoro Capital Advisors
New York
$152M
2
CCM
2
Consonance Capital Management
New York
$138M
3
BlackRock
3
BlackRock
New York
$167M
4
BCLSI
4
Bain Capital Life Sciences Investors
Massachusetts
$80.6M
5
Wellington Management Group
5
Wellington Management Group
Massachusetts
$67.5M

Top Sellers

1
NMC
1
NEA Management Company
Maryland
$186M
2
GTC
2
Ghost Tree Capital
New York
$14.6M
3
SCM
3
Sarissa Capital Management
Connecticut
$60.1M
4
VA
4
VR Adviser
New York
$0
5
BI
5
BVF Inc
California
$0
Name Market Value Shares Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$186M 7,959,520 -4,004,129 -33%
BlackRock
2
BlackRock
New York
$167M 7,137,740 +3,851,261 +117%
ACA
3
Avoro Capital Advisors
New York
$152M 6,500,000 +6,500,000 New
CCM
4
Consonance Capital Management
New York
$138M 5,896,326 +5,896,326 New
BCLSI
5
Bain Capital Life Sciences Investors
Massachusetts
$80.6M 3,445,667 +3,445,667 New
Wellington Management Group
6
Wellington Management Group
Massachusetts
$67.5M 2,886,127 +2,865,090 +13,619%
Vanguard Group
7
Vanguard Group
Pennsylvania
$67M 2,864,463 +972,435 +51%
SCM
8
Sarissa Capital Management
Connecticut
$60.1M 2,570,000 -1,180,000 -31%
O
9
OrbiMed
New York
$44.7M 1,910,008 +563,287 +42%
RSCM
10
Rock Springs Capital Management
Maryland
$44M 1,878,428 +645,428 +52%
State Street
11
State Street
Massachusetts
$36.6M 1,565,449 +872,122 +126%
APM
12
Avidity Partners Management
Texas
$25M 1,069,600 +1,069,600 New
Fidelity Investments
13
Fidelity Investments
Massachusetts
$24.9M 1,064,788 +943,365 +777%
PAMU
14
Pictet Asset Management (UK)
United Kingdom
$24M 1,027,260 +1,027,260 New
D.E. Shaw & Co
15
D.E. Shaw & Co
New York
$24M 1,025,950 +1,002,801 +4,332%
Invesco
16
Invesco
Georgia
$23M 982,795 +982,795 New
AG
17
Artal Group
Luxembourg
$18.7M 800,000 +800,000 New
RCP
18
Rho Capital Partners
New York
$18.6M 796,458 – –
Millennium Management
19
Millennium Management
New York
$18.2M 776,938 +263,639 +51%
Geode Capital Management
20
Geode Capital Management
Massachusetts
$17.8M 761,252 +231,464 +44%
T. Rowe Price Associates
21
T. Rowe Price Associates
Maryland
$17.4M 745,220 +745,220 New
ACP
22
Acuta Capital Partners
California
$14.8M 632,500 -195,000 -24%
MWNA
23
Marshall Wace North America
New York
$14.7M 628,168 +628,168 New
GTC
24
Ghost Tree Capital
New York
$14.6M 625,000 -1,375,000 -69%
Citadel Advisors
25
Citadel Advisors
Florida
$14M 598,201 +137,015 +30%
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