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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
P
1
Pfizer
New York
$6.85M
Vanguard Group
2
Vanguard Group
Pennsylvania
$5.66M +$269K +186,761 +11%
AFM
3
Anson Funds Management
Texas
$4.68M -$3.14M -2,183,463 -57%
AI
4
Alphabet Inc
California
$2.58M
Renaissance Technologies
5
Renaissance Technologies
New York
$2.41M -$200K -138,742 -14%
SSA
6
Schonfeld Strategic Advisors
New York
$1.48M +$735K +510,834 New
Geode Capital Management
7
Geode Capital Management
Massachusetts
$1.48M -$20.4K -14,170 -3%
BlackRock
8
BlackRock
New York
$1.26M -$68.1K -47,314 -10%
MCM
9
Monimus Capital Management
New Jersey
$902K
EI
10
EAM Investors
California
$694K +$344K +239,140 New
SCM
11
Stonepine Capital Management
Oregon
$455K +$226K +156,888 New
State Street
12
State Street
Massachusetts
$445K +$6.53K +4,540 +3%
ICM
13
Ionic Capital Management
New York
$435K +$216K +150,000 New
ACM
14
ADAR1 Capital Management
Texas
$417K -$946K -657,360 -82%
BCM
15
Bridgeway Capital Management
Texas
$333K -$57.5K -40,000 -26%
Acadian Asset Management
16
Acadian Asset Management
Massachusetts
$327K -$1.09M -758,323 -87%
Citadel Advisors
17
Citadel Advisors
Florida
$301K +$61.1K +42,470 +69%
Northern Trust
18
Northern Trust
Illinois
$292K -$134 -93 -0.1%
Susquehanna International Group
19
Susquehanna International Group
Pennsylvania
$202K +$100K +69,814 New
XT
20
XTX Topco
Cayman Islands
$100K +$49.7K +34,551 New
AWM
21
Axxcess Wealth Management
California
$94.4K +$46.8K +32,548 New
CAAS
22
Capital Asset Advisory Services
Michigan
$94.4K +$46.8K +32,548 New
QC
23
Quadrature Capital
United Kingdom
$90.5K +$44.9K +31,205 New
TSW
24
Three Seasons Wealth
Utah
$87K
Simplex Trading
25
Simplex Trading
Illinois
$87K +$36.3K +25,224 +495%