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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
ACM
1
Aquilo Capital Management
California
$50.2M +$30.2M +2,554,061 +131%
AVAI
2
Atlas Venture Associates IX
Massachusetts
$15.4M
BI
3
BVF Inc
California
$15M +$10.1M +857,794 +176%
RSCM
4
Rock Springs Capital Management
Maryland
$13.8M +$7.35M +621,079 +101%
AI
5
Alphabet Inc
California
$12.4M
BlackRock
6
BlackRock
New York
$12M +$1.5M +126,906 +13%
NHAS
7
Novo Holdings A/S
Denmark
$10.4M
Vanguard Group
8
Vanguard Group
Pennsylvania
$10.4M +$2.29M +193,664 +26%
AG
9
Artal Group
Luxembourg
$6.7M +$650K +54,960 +10%
AIC
10
AWM Investment Company
New York
$5.57M +$3.02M +255,000 +105%
GIM
11
Granahan Investment Management
Massachusetts
$4.17M +$2.45M +207,472 +125%
State Street
12
State Street
Massachusetts
$3.19M -$35.3K -2,982 -1%
Dimensional Fund Advisors
13
Dimensional Fund Advisors
Texas
$2.58M +$199K +16,854 +8%
Northern Trust
14
Northern Trust
Illinois
$2.36M +$13.7K +1,160 +0.6%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$2.23M +$32.3K +2,729 +1%
SB
16
Samsara BioCapital
California
$1.79M +$1.89M +160,000 New
Renaissance Technologies
17
Renaissance Technologies
New York
$1.71M -$2.09M -176,700 -54%
Millennium Management
18
Millennium Management
New York
$1.46M +$1.12M +94,581 +263%
Jacobs Levy Equity Management
19
Jacobs Levy Equity Management
New Jersey
$1.38M -$741K -62,662 -34%
Russell Investments Group
20
Russell Investments Group
United Kingdom
$1.29M +$274K +23,200 +25%
Alyeska Investment Group
21
Alyeska Investment Group
Illinois
$1.12M +$1.18M +100,000 New
DCM
22
DAFNA Capital Management
California
$1.12M +$1.18M +100,000 New
JP Morgan Chase
23
JP Morgan Chase
New York
$895K -$117K -9,887 -10%
Susquehanna International Group
24
Susquehanna International Group
Pennsylvania
$641K +$203K +17,158 +43%
Bank of New York Mellon
25
Bank of New York Mellon
New York
$575K +$18.8K +1,589 +3%