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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
ACM
1
Aquilo Capital Management
California
$6.81M -$1.91M -1,918,021 -36%
AIC
2
AWM Investment Company
New York
$4.6M +$2.29M +2,300,400 New
BI
3
BVF Inc
California
$3.86M -$1.15M -1,160,239 -38%
AFM
4
Anson Funds Management
Texas
$2.95M +$1.47M +1,473,872 New
AVAI
5
Atlas Venture Associates IX
Massachusetts
$2.75M
Vanguard Group
6
Vanguard Group
Pennsylvania
$2.11M -$191K -192,269 -15%
AVLSA
7
Atlas Venture Life Science Advisors
Massachusetts
$2.06M
AI
8
Alphabet Inc
California
$1.78M
RSCM
9
Rock Springs Capital Management
Maryland
$1.54M
M
10
Murchinson
Ontario, Canada
$1.52M +$758K +762,700 New
BlackRock
11
BlackRock
New York
$1.39M +$1.38K +1,385 +0.2%
Millennium Management
12
Millennium Management
New York
$1.38M +$372K +373,753 +119%
AG
13
Artal Group
Luxembourg
$1M
NHAS
14
Novo Holdings A/S
Denmark
$938K
Geode Capital Management
15
Geode Capital Management
Massachusetts
$580K
OMC
16
Oasis Management Company
Cayman Islands
$576K
OMC
17
OUP Management Company
Pennsylvania
$498K
Renaissance Technologies
18
Renaissance Technologies
New York
$429K -$720K -724,317 -77%
Bank of Montreal
19
Bank of Montreal
Ontario, Canada
$415K +$201K +202,300 New
Marshall Wace
20
Marshall Wace
United Kingdom
$374K +$149K +150,201 +413%
AQR Capital Management
21
AQR Capital Management
Connecticut
$373K +$31K +31,208 +20%
DCM
22
DAFNA Capital Management
California
$250K +$124K +125,000 New
State Street
23
State Street
Massachusetts
$183K -$9.02K -9,073 -9%
LBA
24
Letko, Brosseau & Associates
Quebec, Canada
$147K
Northern Trust
25
Northern Trust
Illinois
$140K -$5 -5 -0%