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Mersana Therapeutics
MRSN

Overview Fund Activity

50 hedge funds and large institutions have $283M invested in Mersana Therapeutics in 2017 Q4 according to their latest regulatory filings, with 13 funds opening new positions, 17 increasing their positions, 10 reducing their positions, and 5 closing their positions.

Holders
50
Holders Change
+8
Holders Change %
+19.05%
% of All Funds
1.14%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
13
Increased
17
Reduced
10
Closed
5
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
Fidelity International
1
Fidelity International
Bermuda
$7.78M
2
ACH
2
ArrowMark Colorado Holdings
Colorado
$14.8M
3
BlackRock
3
BlackRock
New York
$9.49M
4
Wellington Management Group
4
Wellington Management Group
Massachusetts
$39.7M
5
Vanguard Group
5
Vanguard Group
Pennsylvania
$2.98M

Top Sellers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$4.38M
2
Millennium Management
2
Millennium Management
New York
$0
3
LCM
3
Laurion Capital Management
New York
$0
4
Tudor Investment Corp
4
Tudor Investment Corp
Connecticut
$0
5
Citigroup
5
Citigroup
New York
$21K
Name Market Value Shares Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$134M 8,144,267 – –
Wellington Management Group
2
Wellington Management Group
Massachusetts
$39.7M 2,418,324 +26,920 +1%
RSCM
3
Rock Springs Capital Management
Maryland
$21.8M 1,326,800 -3,200 -0.2%
PAI
4
ProQuest Associates IV
Florida
$15.7M 955,709 – –
ACH
5
ArrowMark Colorado Holdings
Colorado
$14.8M 899,773 +422,062 +88%
RCP
6
Rho Capital Partners
New York
$13.4M 818,033 – –
BlackRock
7
BlackRock
New York
$9.49M 577,299 +313,516 +119%
Fidelity International
8
Fidelity International
Bermuda
$7.78M 473,407 +473,407 New
JPMorgan Chase & Co
9
JPMorgan Chase & Co
New York
$5.48M 333,682 -1,668 -0.5%
CAM
10
Cormorant Asset Management
Massachusetts
$4.86M 295,548 -1 -0%
Fidelity Investments
11
Fidelity Investments
Massachusetts
$4.38M 266,406 -1,468,655 -85%
Vanguard Group
12
Vanguard Group
Pennsylvania
$2.98M 181,337 +22,900 +14%
Allianz Asset Management
13
Allianz Asset Management
Germany
$1.35M 82,099 – –
Geode Capital Management
14
Geode Capital Management
Massachusetts
$1.04M 63,173 +5,821 +10%
Victory Capital Management
15
Victory Capital Management
Texas
$952K 57,930 +5,730 +11%
Northern Trust
16
Northern Trust
Illinois
$870K 52,926 +14,705 +38%
State Street
17
State Street
Massachusetts
$726K 44,088 +20,857 +90%
DekaBank Deutsche Girozentrale
18
DekaBank Deutsche Girozentrale
Germany
$461K 30,000 – –
PPA
19
Parametric Portfolio Associates
Washington
$387K 23,555 +39 +0.2%
Norges Bank
20
Norges Bank
Norway
$329K 20,000 – –
D.E. Shaw & Co
21
D.E. Shaw & Co
New York
$280K 17,034 +17,034 New
Bank of New York Mellon
22
Bank of New York Mellon
New York
$254K 15,417 +2,057 +15%
Goldman Sachs
23
Goldman Sachs
New York
$247K 15,023 +15,023 New
Morgan Stanley
24
Morgan Stanley
New York
$237K 14,429 -1,236 -8%
ProShare Advisors
25
ProShare Advisors
Maryland
$214K 13,008 +13,008 New
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