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Seres Therapeutics
MCRB

Overview Fund Activity

32 hedge funds and large institutions have $25.3M invested in Seres Therapeutics in 2025 Q2 according to their latest regulatory filings, with 8 funds opening new positions, 1 increasing their positions, 22 reducing their positions, and 38 closing their positions.

Holders
32
Holders Change
-32
Holders Change %
-50%
% of All Funds
0.43%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
8
Increased
1
Reduced
22
Closed
38
Calls
$1.31M
Puts
$60K
Net Calls
+$1.25M
Net Calls Change
+$1.16M

Top Buyers

1
Marshall Wace
1
Marshall Wace
United Kingdom
$1.02M
2
XT
2
XTX Topco
Cayman Islands
$249K
3
Squarepoint
3
Squarepoint
New York
$232K
4
Royal Bank of Canada
4
Royal Bank of Canada
Ontario, Canada
$77K
5
AUB
5
Atlantic Union Bankshares
Virginia
$4.57K

Top Sellers

1
FP
1
Flagship Pioneering
Massachusetts
$12.8M
2
Fidelity Investments
2
Fidelity Investments
Massachusetts
$2.99M
3
Vanguard Group
3
Vanguard Group
Pennsylvania
$3.25M
4
BlackRock
4
BlackRock
New York
$1.13M
5
Geode Capital Management
5
Geode Capital Management
Massachusetts
$1.02M
Name Market Value Shares Shares
Change 		Shares
Change %
FP
1
Flagship Pioneering
Massachusetts
$12.8M 1,155,850 -21,961,195 -95%
Vanguard Group
2
Vanguard Group
Pennsylvania
$3.25M 292,096 -5,799,903 -95%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$2.99M 268,704 -21,620,728 -99%
BlackRock
4
BlackRock
New York
$1.13M 101,351 -1,660,806 -94%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$1.02M 91,602 -1,527,170 -94%
Marshall Wace
6
Marshall Wace
United Kingdom
$1.02M 91,405 +91,405 New
Vontobel Holding
7
Vontobel Holding
Switzerland
$892K 80,325 -1,005,641 -93%
Charles Schwab
8
Charles Schwab
California
$387K 34,876 -799,231 -96%
State Street
9
State Street
Massachusetts
$298K 26,831 -473,917 -95%
XT
10
XTX Topco
Cayman Islands
$249K 22,417 +22,417 New
Squarepoint
11
Squarepoint
New York
$232K 20,908 +20,908 New
LPC
12
Lion Point Capital
New York
$189K 17,038 -323,723 -95%
Northern Trust
13
Northern Trust
Illinois
$167K 15,076 -286,488 -95%
TCM
14
Tang Capital Management
California
$155K 13,921 -189,983 -93%
BCM
15
Bridgeway Capital Management
Texas
$139K 12,500 -237,500 -95%
Morgan Stanley
16
Morgan Stanley
New York
$87.1K 7,838 -141,766 -95%
UBS Group
17
UBS Group
Switzerland
$83.7K 7,532 -1,448,629 -99%
Royal Bank of Canada
18
Royal Bank of Canada
Ontario, Canada
$77K 6,954 +2,510 +56%
SS
19
SBI Securities
Japan
$38.7K 3,482 -66,182 -95%
Group One Trading
20
Group One Trading
Illinois
$12.9K 1,161 -21,546 -95%
AUB
21
Atlantic Union Bankshares
Virginia
$4.57K 411 +411 New
BNP Paribas Financial Markets
22
BNP Paribas Financial Markets
France
$3.39K 305 -5,832 -95%
Bank of America
23
Bank of America
North Carolina
$2.07K 186 -5,768 -97%
TRCT
24
Tower Research Capital (TRC)
New York
$2.06K 185 +185 New
PWA
25
Physician Wealth Advisors
Utah
$1.58K 142 +142 New
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