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Aspen Aerogels
ASPN

Overview Fund Activity

182 hedge funds and large institutions have $424M invested in Aspen Aerogels in 2025 Q2 according to their latest regulatory filings, with 26 funds opening new positions, 76 increasing their positions, 53 reducing their positions, and 65 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
182
Holders Change
-39
Holders Change %
-17.65%
% of All Funds
2.44%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
26
Increased
76
Reduced
53
Closed
65
Calls
$4.93M
Puts
$2.51M
Net Calls
+$2.42M
Net Calls Change
-$8.18M

Top Buyers

1
GS
Gagnon Securities
New York
$11.2M
2
Federated Hermes
Federated Hermes
Pennsylvania
$10.5M
3
Goldman Sachs
Goldman Sachs
New York
$13M
4
Invesco
Invesco
Georgia
$4.93M
5
RHJA
Rice Hall James & Associates
California
$9.14M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
$1M
2
AIC
AWM Investment Company
New York
$8.5M
3
MIM
MetLife Investment Management
New Jersey
$264K
4
DC
Dendur Capital
New York
$0
5
Millennium Management
Millennium Management
New York
$5.37M
Name Holding Trade Value Shares
Change 		Shares
Change %
KL
1
KIM LLC
Kansas
$72.7M – – –
BlackRock
2
BlackRock
New York
$29.5M +$101K +17,014 +0.3%
Vanguard Group
3
Vanguard Group
Pennsylvania
$26.6M +$678K +114,525 +3%
OCMI
4
Oaktop Capital Management II
New Jersey
$26M – – –
GKFF
5
George Kaiser Family Foundation
Oklahoma
$18.8M – – –
NIM
6
Needham Investment Management
New York
$17.8M +$1.64M +277,000 +10%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$14.5M -$346K -58,481 -2%
Goldman Sachs
8
Goldman Sachs
New York
$13M +$5.49M +927,544 +73%
State Street
9
State Street
Massachusetts
$11.4M +$2.53M +426,760 +29%
GS
10
Gagnon Securities
New York
$11.2M +$11.2M +1,899,108 New
TAM
11
Telemark Asset Management
Massachusetts
$10.6M -$592K -100,000 -5%
Federated Hermes
12
Federated Hermes
Pennsylvania
$10.5M +$10.5M +1,766,733 New
Geode Capital Management
13
Geode Capital Management
Massachusetts
$9.37M +$396K +66,967 +4%
RHJA
14
Rice Hall James & Associates
California
$9.14M +$4.24M +715,626 +86%
AIC
15
AWM Investment Company
New York
$8.5M -$6M -1,013,744 -41%
JPMorgan Chase & Co
16
JPMorgan Chase & Co
New York
$7.38M +$3.79M +639,753 +105%
Millennium Management
17
Millennium Management
New York
$5.37M -$4.1M -692,647 -43%
Invesco
18
Invesco
Georgia
$4.93M +$4.5M +759,360 +1,046%
Bank of America
19
Bank of America
North Carolina
$4.84M +$2.68M +453,221 +124%
Two Sigma Investments
20
Two Sigma Investments
New York
$4.57M -$771K -130,177 -14%
PCM
21
Penn Capital Management
Pennsylvania
$4.42M +$615K +103,783 +16%
Morgan Stanley
22
Morgan Stanley
New York
$4.18M -$498K -84,111 -11%
Renaissance Technologies
23
Renaissance Technologies
New York
$4.02M -$503K -84,900 -11%
TI
24
Trexquant Investment
Connecticut
$3.84M -$1.25M -211,208 -25%
PVM
25
Palogic Value Management
Texas
$3.61M +$1.1M +185,000 +44%
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