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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
AFM
1
Anson Funds Management
Texas
$5.03M +$990K +714,710 +21%
Vanguard Group
2
Vanguard Group
Pennsylvania
$1.88M +$43.1K +31,122 +2%
AVAI
3
Atlas Venture Associates IX
Massachusetts
$1.64M
AVLSA
4
Atlas Venture Life Science Advisors
Massachusetts
$1.23M
AI
5
Alphabet Inc
California
$1.08M
M
6
Murchinson
Ontario, Canada
$1.04M +$139K +100,000 +13%
Renaissance Technologies
7
Renaissance Technologies
New York
$662K -$64.1K -46,266 -8%
BlackRock
8
BlackRock
New York
$583K -$58.2K -41,995 -8%
NHAS
9
Novo Holdings A/S
Denmark
$567K
Ameriprise
10
Ameriprise
Minnesota
$561K -$5.98K -4,319 -0.9%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$500K +$30.3K +21,902 +6%
AIC
12
AWM Investment Company
New York
$403K -$69.3K -50,000 -13%
Acadian Asset Management
13
Acadian Asset Management
Massachusetts
$327K +$136K +98,485 +57%
OMC
14
OUP Management Company
Pennsylvania
$301K
BCM
15
Bridgeway Capital Management
Texas
$163K +$34.6K +25,000 +23%
State Street
16
State Street
Massachusetts
$158K +$27.4K +19,800 +18%
Squarepoint
17
Squarepoint
New York
$157K +$71.3K +51,434 +66%
DCM
18
DAFNA Capital Management
California
$151K
Millennium Management
19
Millennium Management
New York
$145K -$352K -254,156 -68%
Northern Trust
20
Northern Trust
Illinois
$108K +$188 +136 +0.2%
XT
21
XTX Topco
Cayman Islands
$70.6K -$66.5K -48,016 -45%
RSCM
22
Rock Springs Capital Management
Maryland
$69.4K -$848K -612,160 -91%
Group One Trading
23
Group One Trading
Illinois
$41.4K -$80K -57,780 -63%
Charles Schwab
24
Charles Schwab
California
$34.6K
Prudential Financial
25
Prudential Financial
New Jersey
$34.1K +$5.26K +3,800 +16%