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Seres Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$217M +$229M +261,923 New
T. Rowe Price Associates
2
T. Rowe Price Associates
Maryland
$39M +$41.9M +48,054 New
BA
3
BlackRock Advisors
Delaware
$26.9M +$28.3M +32,403 New
FV2GP
4
Flagship Ventures 2007 General Partner
Massachusetts
$24.9M +$26.1M +29,965 New
TCM
5
TimesSquare Capital Management
New York
$17M +$17.9M +20,505 New
Jennison Associates
6
Jennison Associates
New York
$16.2M +$17M +19,500 New
Capital World Investors
7
Capital World Investors
California
$15.6M +$16.4M +18,750 New
WRF
8
Waddell & Reed Financial
Kansas
$12.5M +$13.1M +15,065 New
O
9
OrbiMed
New York
$10.2M +$10.8M +12,332 New
RCM
10
RA Capital Management
Massachusetts
$10.2M +$10.8M +12,332 New
RSCM
11
Rock Springs Capital Management
Maryland
$8.6M +$9.04M +10,361 New
Citadel Advisors
12
Citadel Advisors
Florida
$8.02M +$8.43M +9,661 New
BG
13
BlackRock Group
United Kingdom
$8M +$8.41M +9,640 New
AG
14
Artal Group
Luxembourg
$6.64M +$6.98M +8,003 New
Lord, Abbett & Co
15
Lord, Abbett & Co
New Jersey
$6.64M +$6.98M +8,000 New
BBA
16
Baker Bros. Advisors
New York
$5.19M +$5.45M +6,250 New
OAM
17
Oxford Asset Management
United Kingdom
$5.05M +$5.31M +6,090 New
Massachusetts Financial Services
18
Massachusetts Financial Services
Massachusetts
$4.19M +$4.41M +5,053 New
Millennium Management
19
Millennium Management
New York
$3.44M +$3.62M +4,147 New
UBS AM
20
UBS AM
Illinois
$2.83M +$2.98M +3,410 New
JHIU
21
Janus Henderson Investors US
Colorado
$2.58M +$2.71M +3,104 New
BlackRock
22
BlackRock
New York
$2.29M +$2.4M +2,755 New
CAM
23
Cormorant Asset Management
Massachusetts
$2.08M +$2.18M +2,500 New
PA
24
Perceptive Advisors
New York
$2.08M +$2.18M +2,500 New
LCM
25
Landscape Capital Management
New Jersey
$1.93M +$2.03M +2,325 New