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Mersana Therapeutics
MRSN

Overview Fund Activity

53 hedge funds and large institutions have $342M invested in Mersana Therapeutics in 2018 Q2 according to their latest regulatory filings, with 11 funds opening new positions, 20 increasing their positions, 12 reducing their positions, and 14 closing their positions.

Holders
53
Holders Change
-3
Holders Change %
-5.36%
% of All Funds
1.22%
Holding in Top 10
4
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+33.33%
% of All Funds
0.09%
New
11
Increased
20
Reduced
12
Closed
14
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
GTC
1
Ghost Tree Capital
New York
$10.7M
2
ACH
2
ArrowMark Colorado Holdings
Colorado
$22.3M
3
BlackRock
3
BlackRock
New York
$18M
4
Millennium Management
4
Millennium Management
New York
$2.2M
5
Balyasny Asset Management
5
Balyasny Asset Management
Illinois
$1.48M

Top Sellers

1
RSCM
1
Rock Springs Capital Management
Maryland
$17.9M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$48.6M
3
Fidelity International
3
Fidelity International
Bermuda
$6.34M
4
CS
4
Candriam SCA
Luxembourg
$0
5
Point72 Asset Management
5
Point72 Asset Management
Connecticut
$2.53M
Name Market Value Shares Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$145M 8,144,267 – –
Wellington Management Group
2
Wellington Management Group
Massachusetts
$48.6M 2,722,927 -227,414 -8%
ACH
3
ArrowMark Colorado Holdings
Colorado
$22.3M 1,250,977 +318,581 +34%
BlackRock
4
BlackRock
New York
$18M 1,006,357 +188,353 +23%
RSCM
5
Rock Springs Capital Management
Maryland
$17.9M 1,000,000 -300,000 -23%
PAI
6
ProQuest Associates IV
Florida
$17.1M 955,709 – –
RCP
7
Rho Capital Partners
New York
$14.2M 796,458 – –
GTC
8
Ghost Tree Capital
New York
$10.7M 600,000 +321,756 +116%
Vanguard Group
9
Vanguard Group
Pennsylvania
$7.99M 447,178 +25,480 +6%
Fidelity International
10
Fidelity International
Bermuda
$6.34M 355,055 -118,352 -25%
JPMorgan Chase & Co
11
JPMorgan Chase & Co
New York
$5.26M 294,303 -13,875 -5%
Fidelity Investments
12
Fidelity Investments
Massachusetts
$4.58M 256,328 -134 -0.1%
State Street
13
State Street
Massachusetts
$3.11M 174,177 +24,195 +16%
Point72 Asset Management
14
Point72 Asset Management
Connecticut
$2.53M 141,808 -28,192 -17%
Northern Trust
15
Northern Trust
Illinois
$2.27M 127,162 +15,493 +14%
Millennium Management
16
Millennium Management
New York
$2.2M 123,053 +123,053 New
Geode Capital Management
17
Geode Capital Management
Massachusetts
$1.62M 90,909 +4,692 +5%
Balyasny Asset Management
18
Balyasny Asset Management
Illinois
$1.48M 82,600 +82,600 New
Allianz Asset Management
19
Allianz Asset Management
Germany
$1.17M 65,625 – –
AllianceBernstein
20
AllianceBernstein
Tennessee
$1.03M 57,900 +57,900 New
PPA
21
Parametric Portfolio Associates
Washington
$787K 44,088 +9,104 +26%
American Century Companies
22
American Century Companies
Missouri
$776K 43,477 +43,477 New
Russell Investments Group
23
Russell Investments Group
United Kingdom
$766K 42,858 – –
Bank of New York Mellon
24
Bank of New York Mellon
New York
$564K 31,615 +6,804 +27%
Deutsche Bank
25
Deutsche Bank
Germany
$552K 30,916 +13,779 +80%
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