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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
Atlas Venture Associates IX
1
Atlas Venture Associates IX
Massachusetts
$14.6M – – –
ACM
2
Aquilo Capital Management
California
$12.2M – – –
Alphabet Inc
3
Alphabet Inc
California
$11.8M – – –
BVF Inc
4
BVF Inc
California
$10M – – –
BlackRock
5
BlackRock
New York
$7.2M +$234K +22,171 +3%
AIC
6
AWM Investment Company
New York
$6.34M – – –
AG
7
Artal Group
Luxembourg
$5.72M – – –
Rock Springs Capital Management
8
Rock Springs Capital Management
Maryland
$5.56M – – –
Vanguard Group
9
Vanguard Group
Pennsylvania
$5.26M +$627K +59,483 +14%
VHCP Management II
10
VHCP Management II
New York
$5.02M – – –
Novo Holdings A/S
11
Novo Holdings A/S
Denmark
$4.94M – – –
Renaissance Technologies
12
Renaissance Technologies
New York
$2.68M +$399K +37,900 +18%
State Street
13
State Street
Massachusetts
$2.09M +$292K +27,695 +16%
Fidelity Investments
14
Fidelity Investments
Massachusetts
$1.81M -$615K -58,364 -25%
JP Morgan Chase
15
JP Morgan Chase
New York
$1.77M +$24.6K +2,337 +1%
Granahan Investment Management
16
Granahan Investment Management
Massachusetts
$1.56M +$97.5K +9,248 +7%
OrbiMed
17
OrbiMed
New York
$1.49M -$3.86M -366,762 -72%
Dimensional Fund Advisors
18
Dimensional Fund Advisors
Texas
$1.3M +$175K +16,602 +16%
Northern Trust
19
Northern Trust
Illinois
$1.27M +$278K +26,334 +28%
Geode Capital Management
20
Geode Capital Management
Massachusetts
$1.24M +$21.8K +2,065 +2%
Oxford Asset Management
21
Oxford Asset Management
United Kingdom
$793K -$45.2K -4,285 -5%
Bridgeway Capital Management
22
Bridgeway Capital Management
Texas
$579K – – –
Panagora Asset Management
23
Panagora Asset Management
Massachusetts
$538K +$533K +50,583 +31,033%
Nuveen
24
Nuveen
North Carolina
$465K +$67.6K +6,416 +17%
DAFNA Capital Management
25
DAFNA Capital Management
California
$418K -$323K -30,605 -44%