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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
ACM
1
Aquilo Capital Management
California
$45.9M +$3.25M +317,323 +6%
BlackRock
2
BlackRock
New York
$15.6M -$48.1K -4,696 -0.3%
BI
3
BVF Inc
California
$13.8M
AVAI
4
Atlas Venture Associates IX
Massachusetts
$12M
Vanguard Group
5
Vanguard Group
Pennsylvania
$12M +$231K +22,550 +2%
AVLSA
6
Atlas Venture Life Science Advisors
Massachusetts
$8.97M
RSCM
7
Rock Springs Capital Management
Maryland
$8.62M +$467K +45,600 +5%
AI
8
Alphabet Inc
California
$7.74M
Ameriprise
9
Ameriprise
Minnesota
$5.1M +$2.29M +223,108 +61%
AG
10
Artal Group
Luxembourg
$4.35M
State Street
11
State Street
Massachusetts
$4.33M -$3.55M -346,770 -41%
Geode Capital Management
12
Geode Capital Management
Massachusetts
$4.1M +$143K +14,005 +3%
NHAS
13
Novo Holdings A/S
Denmark
$4.08M
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$3.54M +$366K +35,724 +10%
Osaic Holdings
15
Osaic Holdings
Arizona
$3.47M -$307 -30 -3%
AIC
16
AWM Investment Company
New York
$3.24M
OMC
17
OUP Management Company
Pennsylvania
$2.17M
Northern Trust
18
Northern Trust
Illinois
$2.07M -$151K -14,748 -6%
Royal Bank of Canada
19
Royal Bank of Canada
Ontario, Canada
$1.71M +$138K +13,502 +7%
Goldman Sachs
20
Goldman Sachs
New York
$1.23M +$28.8K +2,815 +2%
GIM
21
Granahan Investment Management
Massachusetts
$986K -$2.72M -265,610 -70%
Renaissance Technologies
22
Renaissance Technologies
New York
$949K +$1.12M +109,100 New
JP Morgan Chase
23
JP Morgan Chase
New York
$706K -$164K -16,013 -16%
Two Sigma Investments
24
Two Sigma Investments
New York
$686K +$808K +78,908 New
LBA
25
Letko, Brosseau & Associates
Quebec, Canada
$641K