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Mersana Therapeutics
MRSN

Overview Fund Activity

131 hedge funds and large institutions have $955M invested in Mersana Therapeutics in 2021 Q2 according to their latest regulatory filings, with 18 funds opening new positions, 51 increasing their positions, 40 reducing their positions, and 19 closing their positions.

Holders
131
Holders Change
-1
Holders Change %
-0.76%
% of All Funds
2.29%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
18
Increased
51
Reduced
40
Closed
19
Calls
$37K
Puts
$3.75M
Net Calls
-$3.71M
Net Calls Change
-$3.34M

Top Buyers

1
Assenagon Asset Management
1
Assenagon Asset Management
Luxembourg
$14.1M
2
O
2
OrbiMed
New York
$38M
3
CS
3
Candriam SCA
Luxembourg
$26.8M
4
BlackRock
4
BlackRock
New York
$120M
5
CIBC Asset Management
5
CIBC Asset Management
Ontario, Canada
$14.4M

Top Sellers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$365K
2
PI
2
Putnam Investments
Massachusetts
$0
3
T. Rowe Price Associates
3
T. Rowe Price Associates
Maryland
$31.5M
4
Goldman Sachs
4
Goldman Sachs
New York
$7.84M
5
State Street
5
State Street
Massachusetts
$44.1M
Name Market Value Shares Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$120M 8,822,704 +820,618 +10%
Wellington Management Group
2
Wellington Management Group
Massachusetts
$93.4M 6,877,336 +699,543 +11%
ACA
3
Avoro Capital Advisors
New York
$92.3M 6,800,000 – –
SCM
4
Sarissa Capital Management
Connecticut
$54.4M 4,005,600 – –
BCLSI
5
Bain Capital Life Sciences Investors
Massachusetts
$50.2M 3,695,667 – –
State Street
6
State Street
Massachusetts
$44.1M 3,246,523 -499,477 -13%
Vanguard Group
7
Vanguard Group
Pennsylvania
$43.2M 3,181,585 +64,216 +2%
BG
8
Bellevue Group
Switzerland
$39.9M 2,941,000 +90,990 +3%
RSCM
9
Rock Springs Capital Management
Maryland
$38.6M 2,845,618 +70,491 +3%
O
10
OrbiMed
New York
$38M 2,800,247 +907,747 +48%
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$31.5M 2,317,747 -656,340 -22%
Westfield Capital Management
12
Westfield Capital Management
Massachusetts
$28.6M 2,108,810 +110,172 +6%
CS
13
Candriam SCA
Luxembourg
$26.8M 1,972,895 +850,722 +76%
Alkeon Capital Management
14
Alkeon Capital Management
New York
$24.5M 1,806,267 -4,238 -0.2%
PAMU
15
Pictet Asset Management (UK)
United Kingdom
$23.3M 1,712,147 +8,248 +0.5%
AG
16
Artal Group
Luxembourg
$16.3M 1,200,000 – –
CIBC Asset Management
17
CIBC Asset Management
Ontario, Canada
$14.4M 1,058,506 +730,887 +223%
Geode Capital Management
18
Geode Capital Management
Massachusetts
$14.3M 1,051,919 +93,868 +10%
Assenagon Asset Management
19
Assenagon Asset Management
Luxembourg
$14.1M 1,040,942 +1,040,942 New
RCP
20
Rho Capital Partners
New York
$10.8M 796,458 – –
Northern Trust
21
Northern Trust
Illinois
$9.27M 682,687 +89,467 +15%
Citadel Advisors
22
Citadel Advisors
Florida
$8M 589,123 +50,716 +9%
Goldman Sachs
23
Goldman Sachs
New York
$7.84M 576,955 -580,435 -50%
Two Sigma Advisers
24
Two Sigma Advisers
New York
$7.71M 567,600 -19,100 -3%
Two Sigma Investments
25
Two Sigma Investments
New York
$7.66M 564,030 +178,460 +46%
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