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Spero Therapeutics

Name Holding Trade Value Shares
Change
Change in
Stake
BI
1
BVF Inc
California
$15.6M +$5.1M +439,130 +42%
AVAI
2
Atlas Venture Associates IX
Massachusetts
$14.5M
AI
3
Alphabet Inc
California
$11.7M
EC
4
EcoR1 Capital
California
$9.38M +$10.4M +892,741 New
ACM
5
Aquilo Capital Management
California
$8.4M +$4.44M +383,000 +92%
Fidelity Investments
6
Fidelity Investments
Massachusetts
$6.5M -$2.11M -181,794 -23%
AG
7
Artal Group
Luxembourg
$6.31M +$2.9M +250,000 +71%
AIC
8
AWM Investment Company
New York
$5.68M +$4.64M +400,000 +285%
RSCM
9
Rock Springs Capital Management
Maryland
$5.52M
VMI
10
VHCP Management II
New York
$4.98M
Vanguard Group
11
Vanguard Group
Pennsylvania
$4.79M +$3.84M +330,580 +265%
BlackRock
12
BlackRock
New York
$3.92M +$354K +30,470 +9%
SCM
13
Stonepine Capital Management
Oregon
$2.38M +$2.63M +226,444 New
JP Morgan Chase
14
JP Morgan Chase
New York
$1.85M +$439K +37,840 +27%
UOC
15
UBS O'Connor
Illinois
$1.79M +$1.97M +170,000 New
GIM
16
Granahan Investment Management
Massachusetts
$1.65M +$68.6K +5,910 +4%
State Street
17
State Street
Massachusetts
$1.34M +$774K +66,727 +109%
Northern Trust
18
Northern Trust
Illinois
$1.01M +$338K +29,145 +44%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$924K +$400K +34,476 +64%
BCM
20
Bridgeway Capital Management
Texas
$826K +$277K +23,879 +44%
DCM
21
DAFNA Capital Management
California
$736K +$812K +70,000 New
SSA
22
Schonfeld Strategic Advisors
New York
$526K +$580K +50,000 New
Point72 Asset Management
23
Point72 Asset Management
Connecticut
$462K +$511K +44,000 New
Bank of New York Mellon
24
Bank of New York Mellon
New York
$293K +$36.4K +3,139 +13%
HCMT
25
Highland Capital Management (Texas)
Texas
$210K +$232K +20,000 New