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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
Anson Funds Management
1
Anson Funds Management
Texas
$4.88M – – –
Vanguard Group
2
Vanguard Group
Pennsylvania
$2.3M +$177K +117,093 +7%
Acadian Asset Management
3
Acadian Asset Management
Massachusetts
$1.39M +$466K +309,262 +41%
Renaissance Technologies
4
Renaissance Technologies
New York
$1.27M +$183K +121,492 +14%
ADAR1 Capital Management
5
ADAR1 Capital Management
Texas
$1.19M -$12.1K -8,000 -0.9%
Alphabet Inc
6
Alphabet Inc
California
$1.16M – – –
Murchinson
7
Murchinson
Ontario, Canada
$1.14M – – –
Atlas Venture Life Science Advisors
8
Atlas Venture Life Science Advisors
Massachusetts
$696K -$109K -72,277 -12%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$640K +$34.3K +22,746 +5%
BlackRock
10
BlackRock
New York
$628K +$9.8K +6,506 +1%
Novo Holdings A/S
11
Novo Holdings A/S
Denmark
$610K – – –
AIC
12
AWM Investment Company
New York
$433K – – –
Citadel Advisors
13
Citadel Advisors
Florida
$406K +$471K +312,034 New
Bridgeway Capital Management
14
Bridgeway Capital Management
Texas
$240K – – –
State Street
15
State Street
Massachusetts
$170K – – –
DAFNA Capital Management
16
DAFNA Capital Management
California
$162K – – –
Northern Trust
17
Northern Trust
Illinois
$146K -$3.4K -2,256 -2%
Millennium Management
18
Millennium Management
New York
$128K -$74.4K -49,354 -33%
Man Group
19
Man Group
United Kingdom
$95.5K -$212K -140,557 -66%
Two Sigma Securities
20
Two Sigma Securities
New York
$88K +$102K +67,728 New
Mackenzie Financial
21
Mackenzie Financial
Ontario, Canada
$42.5K +$6.47K +4,287 +15%
DLK Investment Management
22
DLK Investment Management
California
$40.8K – – –
Charles Schwab
23
Charles Schwab
California
$37.1K – – –
Shay Capital
24
Shay Capital
New York
$32.5K -$425K -281,967 -92%
Susquehanna International Group
25
Susquehanna International Group
Pennsylvania
$30K +$34.8K +23,073 New