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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
AFM
1
Anson Funds Management
Texas
$5M +$171K +100,000 +3%
Vanguard Group
2
Vanguard Group
Pennsylvania
$2.21M +$171K +99,903 +7%
AVAI
3
Atlas Venture Associates IX
Massachusetts
$1.96M -$40.5K -23,665 -2%
AVLSA
4
Atlas Venture Life Science Advisors
Massachusetts
$1.47M -$30.3K -17,722 -2%
AI
5
Alphabet Inc
California
$1.29M
M
6
Murchinson
Ontario, Canada
$1.11M -$73.5K -42,921 -5%
RSCM
7
Rock Springs Capital Management
Maryland
$971K
Renaissance Technologies
8
Renaissance Technologies
New York
$860K +$313K +183,131 +45%
BlackRock
9
BlackRock
New York
$760K +$58.2K +33,991 +7%
NHAS
10
Novo Holdings A/S
Denmark
$680K
Ameriprise
11
Ameriprise
Minnesota
$679K +$801K +467,960 New
Geode Capital Management
12
Geode Capital Management
Massachusetts
$567K +$90.6K +52,949 +16%
AIC
13
AWM Investment Company
New York
$556K -$1.57M -917,000 -71%
Millennium Management
14
Millennium Management
New York
$542K -$207K -120,691 -24%
OMC
15
OUP Management Company
Pennsylvania
$361K
Acadian Asset Management
16
Acadian Asset Management
Massachusetts
$250K +$297K +173,539 New
DCM
17
DAFNA Capital Management
California
$181K
State Street
18
State Street
Massachusetts
$161K
BCM
19
Bridgeway Capital Management
Texas
$159K
XT
20
XTX Topco
Cayman Islands
$154K -$23.1K -13,477 -11%
Group One Trading
21
Group One Trading
Illinois
$133K +$8.33K +4,866 +6%
Northern Trust
22
Northern Trust
Illinois
$129K +$4.26K +2,489 +3%
Two Sigma Investments
23
Two Sigma Investments
New York
$123K +$89.8K +52,435 +163%
Squarepoint
24
Squarepoint
New York
$113K +$134K +78,063 New
Susquehanna International Group
25
Susquehanna International Group
Pennsylvania
$64.3K +$30.5K +17,815 +67%