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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
P
1
Pfizer
New York
$4.44M
Vanguard Group
2
Vanguard Group
Pennsylvania
$3.74M +$86.8K +39,474 +2%
AFM
3
Anson Funds Management
Texas
$3.01M -$26.2K -11,900 -0.7%
Renaissance Technologies
4
Renaissance Technologies
New York
$2.73M +$1.36M +620,600 +75%
AI
5
Alphabet Inc
California
$1.67M
Geode Capital Management
6
Geode Capital Management
Massachusetts
$992K +$36.9K +16,778 +3%
BlackRock
7
BlackRock
New York
$817K
EI
8
EAM Investors
California
$531K +$95.2K +43,305 +18%
ICM
9
Ionic Capital Management
New York
$392K +$129K +58,725 +39%
State Street
10
State Street
Massachusetts
$359K +$82.5K +37,500 +24%
Arrowstreet Capital
11
Arrowstreet Capital
Massachusetts
$283K +$331K +150,516 New
Northern Trust
12
Northern Trust
Illinois
$244K +$63.4K +28,812 +29%
ACM
13
ADAR1 Capital Management
Texas
$217K -$62.4K -28,378 -20%
BCM
14
Bridgeway Capital Management
Texas
$216K
IFO
15
Intrepid Family Office
Florida
$207K +$242K +110,000 New
GCP
16
GSA Capital Partners
United Kingdom
$201K +$235K +106,894 New
SC
17
Shay Capital
New York
$120K +$140K +63,667 New
Two Sigma Investments
18
Two Sigma Investments
New York
$92.9K +$109K +49,399 New
Morgan Stanley
19
Morgan Stanley
New York
$81.5K +$75.1K +34,157 +370%
Jane Street
20
Jane Street
New York
$80.8K +$94.5K +42,988 New
CSS
21
Cubist Systematic Strategies
Connecticut
$76.8K +$30.1K +13,705 +50%
American Century Companies
22
American Century Companies
Missouri
$75.6K +$88.4K +40,219 New
Assenagon Asset Management
23
Assenagon Asset Management
Luxembourg
$69.5K +$81.3K +36,993 New
XT
24
XTX Topco
Cayman Islands
$63.5K -$1.65K -750 -2%
AWM
25
Axxcess Wealth Management
California
$61.2K