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Mersana Therapeutics
MRSN

Overview Fund Activity

110 hedge funds and large institutions have $647M invested in Mersana Therapeutics in 2021 Q3 according to their latest regulatory filings, with 12 funds opening new positions, 45 increasing their positions, 34 reducing their positions, and 32 closing their positions.

Holders
110
Holders Change
-21
Holders Change %
-16.03%
% of All Funds
1.93%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.04%
New
12
Increased
45
Reduced
34
Closed
32
Calls
$1.22M
Puts
$1.57M
Net Calls
-$350K
Net Calls Change
+$3.36M

Top Buyers

1
PAMS
1
Pictet Asset Management (Switzerland)
Switzerland
$21.1M
2
BG
2
Bellevue Group
Switzerland
$40.2M
3
State Street
3
State Street
Massachusetts
$38.6M
4
Goldman Sachs
4
Goldman Sachs
New York
$10.8M
5
Morgan Stanley
5
Morgan Stanley
New York
$6.3M

Top Sellers

1
Westfield Capital Management
1
Westfield Capital Management
Massachusetts
$0
2
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$9.25M
3
Wellington Management Group
3
Wellington Management Group
Massachusetts
$56.7M
4
GTC
4
Ghost Tree Capital
New York
$0
5
CC
5
Commodore Capital
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
AA
51
AlphaCentric Advisors
Puerto Rico
$618K 65,500 +20,000 +44%
QF
52
QVT Financial
New York
$591K 62,657 – –
MWNA
53
Marshall Wace North America
New York
$558K 59,082 +59,082 New
CS
54
Credit Suisse
Switzerland
$492K 52,096 -2,061 -4%
New York State Common Retirement Fund
55
New York State Common Retirement Fund
New York
$489K 51,864 -7,581 -13%
D.E. Shaw & Co
56
D.E. Shaw & Co
New York
$458K 48,605 +8,520 +21%
TRSOTSOK
57
Teachers Retirement System of the State of Kentucky
Kentucky
$452K 47,980 +11,141 +30%
Citadel Advisors
58
Citadel Advisors
Florida
$442K 46,843 -542,280 -92%
Jane Street
59
Jane Street
New York
$430K 45,632 -6,740 -13%
TD Asset Management
60
TD Asset Management
Ontario, Canada
$425K 45,057 -28,897 -39%
UBS AM
61
UBS AM
Illinois
$409K 43,419 – –
AIG
62
American International Group
New York
$369K 39,172 +584 +2%
Manulife (Manufacturers Life Insurance)
63
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$359K 38,053 -1,753 -4%
SG Americas Securities
64
SG Americas Securities
New York
$346K 36,713 +36,713 New
PPA
65
Parametric Portfolio Associates
Washington
$317K 33,572 -2,414 -7%
Barclays
66
Barclays
United Kingdom
$312K 33,016 -24,349 -42%
Invesco
67
Invesco
Georgia
$303K 32,211 +5,166 +19%
JPMorgan Chase & Co
68
JPMorgan Chase & Co
New York
$297K 31,518 +1,658 +6%
PP
69
PDT Partners
New York
$288K 30,495 +30,495 New
State Board of Administration of Florida Retirement System
70
State Board of Administration of Florida Retirement System
Florida
$256K 27,117 – –
VOYA Investment Management
71
VOYA Investment Management
Georgia
$249K 26,438 – –
Principal Financial Group
72
Principal Financial Group
Iowa
$245K 26,013 -27 -0.1%
Legal & General Group
73
Legal & General Group
United Kingdom
$236K 25,114 +11,108 +79%
ProShare Advisors
74
ProShare Advisors
Maryland
$231K 24,499 -5,867 -19%
Walleye Trading
75
Walleye Trading
New York
$223K 23,650 +8,450 +56%
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