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Seres Therapeutics
MCRB

Overview Fund Activity

33 hedge funds and large institutions have $25.4M invested in Seres Therapeutics in 2025 Q2 according to their latest regulatory filings, with 8 funds opening new positions, 9 increasing their positions, 13 reducing their positions, and 38 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
33
Holders Change
-31
Holders Change %
-48.44%
% of All Funds
0.44%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
8
Increased
9
Reduced
13
Closed
38
Calls
$2.23M
Puts
$253K
Net Calls
+$1.98M
Net Calls Change
+$1.89M

Top Buyers

1
Marshall Wace
1
Marshall Wace
United Kingdom
$1.02M
2
Vontobel Holding
2
Vontobel Holding
Switzerland
$892K
3
XT
3
XTX Topco
Cayman Islands
$249K
4
Squarepoint
4
Squarepoint
New York
$232K
5
BlackRock
5
BlackRock
New York
$1.13M

Top Sellers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$2.99M
2
UBS Group
2
UBS Group
Switzerland
$83.7K
3
Susquehanna International Group
3
Susquehanna International Group
Pennsylvania
$130K
4
Vanguard Group
4
Vanguard Group
Pennsylvania
$3.25M
5
Invesco
5
Invesco
Georgia
$0
Name Holding Trade Value Shares
Change 		Shares
Change %
FP
1
Flagship Pioneering
Massachusetts
$12.8M -$22 -2 -0%
Vanguard Group
2
Vanguard Group
Pennsylvania
$3.25M -$139K -12,504 -4%
Fidelity Investments
3
Fidelity Investments
Massachusetts
$2.99M -$9.17M -825,768 -75%
BlackRock
4
BlackRock
New York
$1.13M +$147K +13,243 +15%
Geode Capital Management
5
Geode Capital Management
Massachusetts
$1.02M +$118K +10,663 +13%
Marshall Wace
6
Marshall Wace
United Kingdom
$1.02M +$1.02M +91,405 New
Vontobel Holding
7
Vontobel Holding
Switzerland
$892K +$289K +26,027 +48%
Charles Schwab
8
Charles Schwab
California
$387K -$75.9K -6,829 -16%
State Street
9
State Street
Massachusetts
$298K +$19.9K +1,794 +7%
XT
10
XTX Topco
Cayman Islands
$249K +$249K +22,417 New
Squarepoint
11
Squarepoint
New York
$232K +$232K +20,908 New
LPC
12
Lion Point Capital
New York
$189K – – –
Northern Trust
13
Northern Trust
Illinois
$167K -$22 -2 -0%
TCM
14
Tang Capital Management
California
$155K +$41.4K +3,726 +37%
BCM
15
Bridgeway Capital Management
Texas
$139K – – –
Susquehanna International Group
16
Susquehanna International Group
Pennsylvania
$130K -$269K -24,173 -67%
Morgan Stanley
17
Morgan Stanley
New York
$87.1K +$3.98K +358 +5%
UBS Group
18
UBS Group
Switzerland
$83.7K -$725K -65,276 -90%
Royal Bank of Canada
19
Royal Bank of Canada
Ontario, Canada
$77K +$74.5K +6,732 +3,032%
SS
20
SBI Securities
Japan
$38.7K -$11 -1 -0%
Group One Trading
21
Group One Trading
Illinois
$12.9K +$289 +26 +2%
AUB
22
Atlantic Union Bankshares
Virginia
$4.57K +$4.57K +411 New
BNP Paribas Financial Markets
23
BNP Paribas Financial Markets
France
$3.39K -$22 -2 -0.7%
Bank of America
24
Bank of America
North Carolina
$2.07K -$1.25K -112 -38%
TRCT
25
Tower Research Capital (TRC)
New York
$2.06K +$2.06K +185 New
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