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Mersana Therapeutics
MRSN

Overview Fund Activity

76 hedge funds and large institutions have $60.8M invested in Mersana Therapeutics in 2019 Q3 according to their latest regulatory filings, with 6 funds opening new positions, 33 increasing their positions, 22 reducing their positions, and 7 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
76
Holders Change
-1
Holders Change %
-1.3%
% of All Funds
1.67%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
6
Increased
33
Reduced
22
Closed
7
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
BI
BVF Inc
California
+$2.44M
2
Renaissance Technologies
Renaissance Technologies
New York
+$791K
3
DCM
DAFNA Capital Management
California
+$358K
4
PAM
Panagora Asset Management
Massachusetts
+$300K
5
Northern Trust
Northern Trust
Illinois
+$291K

Top Sellers

1
EC
EcoR1 Capital
California
-$5.64M
2
ACH
ArrowMark Colorado Holdings
Colorado
-$3.24M
3
BC
Boxer Capital
California
-$637K
4
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$529K
5
SIM
Spark Investment Management
New York
-$433K
Name Holding Trade Value Shares
Change 		Shares
Change %
NMC
1
NEA Management Company
Maryland
$18.9M +$110K +2,775 +0.6%
BI
2
BVF Inc
California
$6.39M +$2.44M +61,760 +62%
SCM
3
Sarissa Capital Management
Connecticut
$5.93M – – –
BlackRock
4
BlackRock
New York
$3.84M +$65.2K +1,651 +2%
O
5
OrbiMed
New York
$2.99M – – –
Vanguard Group
6
Vanguard Group
Pennsylvania
$2.96M -$50.6K -1,281 -2%
BC
7
Boxer Capital
California
$2.66M -$637K -16,128 -19%
RSCM
8
Rock Springs Capital Management
Maryland
$2.21M – – –
JPMorgan Chase & Co
9
JPMorgan Chase & Co
New York
$1.47M +$182K +4,601 +14%
Wellington Management Group
10
Wellington Management Group
Massachusetts
$1.37M -$53.8K -1,361 -4%
RCP
11
Rho Capital Partners
New York
$1.26M – – –
Renaissance Technologies
12
Renaissance Technologies
New York
$1.21M +$791K +20,028 +188%
State Street
13
State Street
Massachusetts
$947K +$97.5K +2,470 +11%
DCM
14
DAFNA Capital Management
California
$793K +$358K +9,060 +82%
Point72 Asset Management
15
Point72 Asset Management
Connecticut
$782K -$269K -6,800 -26%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$765K +$1.86K +47 +0.2%
ACH
17
ArrowMark Colorado Holdings
Colorado
$653K -$3.24M -82,036 -83%
Northern Trust
18
Northern Trust
Illinois
$614K +$291K +7,367 +90%
PAM
19
Panagora Asset Management
Massachusetts
$455K +$300K +7,599 +194%
Fidelity Investments
20
Fidelity Investments
Massachusetts
$406K +$710 +18 +0.2%
D.E. Shaw & Co
21
D.E. Shaw & Co
New York
$382K -$5.14K -130 -1%
SFM
22
Sphera Funds Management
Israel
$316K – – –
OAM
23
Oxford Asset Management
United Kingdom
$280K +$57K +1,441 +26%
Jacobs Levy Equity Management
24
Jacobs Levy Equity Management
New Jersey
$242K -$22.1K -559 -8%
Marshall Wace
25
Marshall Wace
United Kingdom
$192K -$80.3K -2,033 -29%
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