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Mersana Therapeutics
MRSN

Overview Fund Activity

46 hedge funds and large institutions have $198M invested in Mersana Therapeutics in 2018 Q3 according to their latest regulatory filings, with 3 funds opening new positions, 21 increasing their positions, 8 reducing their positions, and 10 closing their positions.

Holders
46
Holders Change
-7
Holders Change %
-13.21%
% of All Funds
1.05%
Holding in Top 10
3
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-25%
% of All Funds
0.07%
New
3
Increased
21
Reduced
8
Closed
10
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
ACH
1
ArrowMark Colorado Holdings
Colorado
$18.4M
2
EC
2
EcoR1 Capital
California
$4.96M
3
Millennium Management
3
Millennium Management
New York
$3.7M
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$6.01M
5
Geode Capital Management
5
Geode Capital Management
Massachusetts
$1.22M

Top Sellers

1
GTC
1
Ghost Tree Capital
New York
$0
2
Point72 Asset Management
2
Point72 Asset Management
Connecticut
$0
3
AllianceBernstein
3
AllianceBernstein
Tennessee
$0
4
Russell Investments Group
4
Russell Investments Group
United Kingdom
$0
5
Balyasny Asset Management
5
Balyasny Asset Management
Illinois
$361K
Name Market Value Shares Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$81.4M 8,144,267 – –
Wellington Management Group
2
Wellington Management Group
Massachusetts
$27.3M 2,730,395 +7,468 +0.3%
ACH
3
ArrowMark Colorado Holdings
Colorado
$18.4M 1,840,333 +589,356 +47%
BlackRock
4
BlackRock
New York
$10.3M 1,025,042 +18,685 +2%
RSCM
5
Rock Springs Capital Management
Maryland
$10M 1,000,000 – –
PAI
6
ProQuest Associates IV
Florida
$9.56M 955,709 – –
RCP
7
Rho Capital Partners
New York
$7.97M 796,458 – –
Vanguard Group
8
Vanguard Group
Pennsylvania
$6.01M 601,101 +153,923 +34%
EC
9
EcoR1 Capital
California
$4.96M 495,618 +495,618 New
Millennium Management
10
Millennium Management
New York
$3.7M 369,723 +246,670 +200%
Fidelity International
11
Fidelity International
Bermuda
$3.55M 355,055 – –
JPMorgan Chase & Co
12
JPMorgan Chase & Co
New York
$3.18M 318,361 +24,058 +8%
Fidelity Investments
13
Fidelity Investments
Massachusetts
$2.56M 256,328 – –
State Street
14
State Street
Massachusetts
$1.84M 184,197 +10,020 +6%
Northern Trust
15
Northern Trust
Illinois
$1.46M 146,030 +18,868 +15%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$1.22M 122,434 +31,525 +35%
PPA
17
Parametric Portfolio Associates
Washington
$646K 64,626 +20,538 +47%
Allianz Asset Management
18
Allianz Asset Management
Germany
$456K 45,625 -20,000 -30%
Balyasny Asset Management
19
Balyasny Asset Management
Illinois
$361K 36,090 -46,510 -56%
Goldman Sachs
20
Goldman Sachs
New York
$336K 33,592 +19,783 +143%
Bank of New York Mellon
21
Bank of New York Mellon
New York
$329K 32,897 +1,282 +4%
Deutsche Bank
22
Deutsche Bank
Germany
$318K 31,799 +883 +3%
Charles Schwab
23
Charles Schwab
California
$281K 28,100 +3,600 +15%
TCIM
24
TIAA CREF Investment Management
New York
$265K 26,464 -843 -3%
PWLP
25
Prio Wealth Limited Partnership
Massachusetts
$235K 23,529 – –
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