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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
GP
1
GSK plc
$21.4M +$21.3M +9,190,606 New
P
2
Pfizer
New York
$5.5M
Vanguard Group
3
Vanguard Group
Pennsylvania
$4.85M +$217K +93,607 +5%
Renaissance Technologies
4
Renaissance Technologies
New York
$2.98M -$402K -173,243 -12%
AI
5
Alphabet Inc
California
$2.07M
AFM
6
Anson Funds Management
Texas
$1.46M -$2.27M -978,507 -61%
Geode Capital Management
7
Geode Capital Management
Massachusetts
$1.23M +$3.99K +1,718 +0.3%
BlackRock
8
BlackRock
New York
$1.01M -$2.67K -1,152 -0.3%
Citadel Advisors
9
Citadel Advisors
Florida
$927K +$924K +397,864 New
Two Sigma Investments
10
Two Sigma Investments
New York
$868K +$750K +323,171 +654%
Susquehanna International Group
11
Susquehanna International Group
Pennsylvania
$684K +$682K +293,700 New
EI
12
EAM Investors
California
$508K -$149K -64,361 -23%
Two Sigma Advisers
13
Two Sigma Advisers
New York
$505K +$503K +216,600 New
State Street
14
State Street
Massachusetts
$490K +$44.6K +19,200 +10%
ICM
15
Ionic Capital Management
New York
$457K -$29.7K -12,786 -6%
GCP
16
GSA Capital Partners
United Kingdom
$417K +$167K +72,036 +67%
IFO
17
Intrepid Family Office
Florida
$384K +$128K +55,000 +50%
Jane Street
18
Jane Street
New York
$369K +$268K +115,356 +268%
SEI Investments
19
SEI Investments
Pennsylvania
$308K +$307K +132,010 New
OAC
20
OMERS Administration Corp
Ontario, Canada
$306K +$304K +131,127 New
Northern Trust
21
Northern Trust
Illinois
$282K -$20.1K -8,659 -7%
Squarepoint
22
Squarepoint
New York
$278K +$277K +119,434 New
UBS Group
23
UBS Group
Switzerland
$271K +$207K +89,346 +330%
BCM
24
Bridgeway Capital Management
Texas
$267K
ACM
25
ADAR1 Capital Management
Texas
$265K -$3.95K -1,700 -1%