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Mersana Therapeutics

84 hedge funds and large institutions have $22.8M invested in Mersana Therapeutics in 2025 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 23 increasing their positions, 30 reducing their positions, and 40 closing their positions.

Holders
84
Holders Change
-28
Holders Change %
-25%
% of All Funds
1.13%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
13
Increased
23
Reduced
30
Closed
40
Calls
$14K
Puts
$4K
Net Calls
+$10K
Net Calls Change
+$3K
Name Market Value Shares Shares
Change
Shares
Change %
Group One Trading
51
Group One Trading
Illinois
$10.3K 34,856 +14,756 +73%
TRCT
52
Tower Research Capital (TRC)
New York
$9.38K 31,684 +5,519 +21%
MFG
53
Merit Financial Group
Georgia
$9.35K 31,588 -10,316 -25%
Walleye Trading
54
Walleye Trading
New York
$9.33K 31,526
Mariner
55
Mariner
Kansas
$9.24K 31,213 +10,463 +50%
Focus Partners Wealth
56
Focus Partners Wealth
Massachusetts
$9.17K 30,976 +447 +1%
HSBC Holdings
57
HSBC Holdings
United Kingdom
$8.78K 30,500 +18,006 +144%
CUAMC
58
China Universal Asset Management Company
China
$7.41K 25,032 +253 +1%
JRP
59
Jasper Ridge Partners
California
$6.84K 23,100
Wells Fargo
60
Wells Fargo
California
$6.81K 23,014 -55,474 -71%
Bank of America
61
Bank of America
North Carolina
$5.95K 20,083 -294,288 -94%
TSS
62
Two Sigma Securities
New York
$5.2K 17,566 +17,566 New
PPW
63
Parcion Private Wealth
Washington
$4.81K 16,233 +941 +6%
Osaic Holdings
64
Osaic Holdings
Arizona
$4.8K 3,432 +98 +3%
SC
65
Savant Capital
Illinois
$4.53K 15,310 -95,831 -86%
Prudential Financial
66
Prudential Financial
New Jersey
$4.4K 14,900 -46,635 -76%
JF
67
Jump Financial
Illinois
$3.35K 11,323 +11,323 New
Barclays
68
Barclays
United Kingdom
$3K 9,767 -111,958 -92%
HPCM
69
Hunter Perkins Capital Management
Illinois
$3K 10,000
ECM
70
ExodusPoint Capital Management
New York
$3K 11,434 +11,434 New
EWA
71
EverSource Wealth Advisors
Alabama
$1.63K 5,494 +2,796 +104%
Mirae Asset Global Investments
72
Mirae Asset Global Investments
South Korea
$1.43K 4,814 +680 +16%
BNP Paribas Financial Markets
73
BNP Paribas Financial Markets
France
$818 2,765 -198,683 -99%
GFM
74
GF Fund Management
China
$768 2,594
Optiver Holding
75
Optiver Holding
Netherlands
$684 2,312