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Aspen Aerogels
ASPN

Name Holding Trade Value Shares
Change 		Change in
Stake
KL
1
KIM LLC
Kansas
$249M – – –
BlackRock
2
BlackRock
New York
$64M +$1.87M +181,279 +5%
Vanguard Group
3
Vanguard Group
Pennsylvania
$54.3M -$21.6K -2,091 -0.1%
OCMI
4
Oaktop Capital Management II
New Jersey
$50.4M – – –
GKFF
5
George Kaiser Family Foundation
Oklahoma
$50M – – –
NIM
6
Needham Investment Management
New York
$46.8M +$4.53M +439,100 +17%
HRCM
7
Hood River Capital Management
Florida
$46.4M +$30.4M +2,942,548 New
Fidelity Investments
8
Fidelity Investments
Massachusetts
$36.7M +$506K +48,960 +2%
SM
9
Samjo Management
New York
$35.9M +$23.5M +2,276,150 New
AIC
10
AWM Investment Company
New York
$33.9M +$5.01M +484,848 +29%
ECA
11
Encompass Capital Advisors
New York
$32M +$20.9M +2,027,532 New
Ameriprise
12
Ameriprise
Minnesota
$29.2M +$10M +969,028 +110%
ACM
13
AIGH Capital Management
Maryland
$28.5M +$542K +52,462 +3%
RA
14
Royce & Associates
New York
$27.1M +$2.68M +259,734 +18%
TAM
15
Telemark Asset Management
Massachusetts
$23.6M +$2.5M +242,424 +19%
FCM
16
Frontier Capital Management
Massachusetts
$22.9M +$5.04M +488,170 +51%
State Street
17
State Street
Massachusetts
$20.3M +$1.02M +99,226 +8%
Federated Hermes
18
Federated Hermes
Pennsylvania
$18.2M +$4.17M +404,042 +54%
Nuveen
19
Nuveen
North Carolina
$17.8M +$1.11M +107,288 +11%
Geode Capital Management
20
Geode Capital Management
Massachusetts
$17.6M +$386K +37,381 +3%
UM
21
UniSuper Management
Australia
$17.1M – – –
AAP
22
Ardsley Advisory Partners
Connecticut
$16.5M -$5.15M -499,000 -32%
DCM
23
Driehaus Capital Management
Illinois
$15.7M +$10.3M +996,043 New
Dimensional Fund Advisors
24
Dimensional Fund Advisors
Texas
$12.9M +$5.95M +576,006 +240%
MIIM
25
Mesirow Institutional Investment Management
Illinois
$12M +$7.86M +761,414 New
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