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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
AVAI
1
Atlas Venture Associates IX
Massachusetts
$13.2M
ACM
2
Aquilo Capital Management
California
$11.1M
AI
3
Alphabet Inc
California
$10.7M
NHAS
4
Novo Holdings A/S
Denmark
$8.95M +$5.02M +465,116 +100%
BI
5
BVF Inc
California
$8.13M -$1.02M -94,299 -10%
BlackRock
6
BlackRock
New York
$7.26M +$823K +76,316 +11%
RSCM
7
Rock Springs Capital Management
Maryland
$5.05M
AG
8
Artal Group
Luxembourg
$4.81M -$431K -40,000 -7%
Vanguard Group
9
Vanguard Group
Pennsylvania
$4.77M -$3.08K -286 -0.1%
AIC
10
AWM Investment Company
New York
$4.56M -$1.34M -123,971 -21%
VMI
11
VHCP Management II
New York
$4.56M
Renaissance Technologies
12
Renaissance Technologies
New York
$3.25M +$921K +85,400 +34%
State Street
13
State Street
Massachusetts
$2.01M +$123K +11,365 +6%
Dimensional Fund Advisors
14
Dimensional Fund Advisors
Texas
$1.5M +$350K +32,475 +26%
GIM
15
Granahan Investment Management
Massachusetts
$1.43M +$14.3K +1,324 +0.9%
Northern Trust
16
Northern Trust
Illinois
$1.31M +$172K +15,913 +13%
JP Morgan Chase
17
JP Morgan Chase
New York
$1.28M -$361K -33,448 -20%
O
18
OrbiMed
New York
$1.27M -$97.7K -9,056 -6%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$1.15M +$28.8K +2,670 +2%
Fidelity Investments
20
Fidelity Investments
Massachusetts
$951K -$773K -71,636 -42%
BCM
21
Bridgeway Capital Management
Texas
$679K +$173K +16,000 +29%
OAM
22
Oxford Asset Management
United Kingdom
$566K -$172K -15,940 -21%
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$441K +$386K +35,788 +356%
PAM
24
Panagora Asset Management
Massachusetts
$394K -$105K -9,713 -19%
Nuveen
25
Nuveen
North Carolina
$369K -$59.3K -5,495 -13%