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Aspen Aerogels
ASPN

Overview Fund Activity

181 hedge funds and large institutions have $422M invested in Aspen Aerogels in 2025 Q2 according to their latest regulatory filings, with 26 funds opening new positions, 75 increasing their positions, 53 reducing their positions, and 65 closing their positions.

Holders
181
Holders Change
-40
Holders Change %
-18.1%
% of All Funds
2.43%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
26
Increased
75
Reduced
53
Closed
65
Calls
$4.13M
Puts
$1.9M
Net Calls
+$2.23M
Net Calls Change
-$8.38M

Top Buyers

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

Top Sellers

1
Fidelity Investments
1
Fidelity Investments
Massachusetts
$1M
2
AIC
2
AWM Investment Company
New York
$8.5M
3
MIM
3
MetLife Investment Management
New Jersey
$264K
4
DC
4
Dendur Capital
New York
$0
5
Millennium Management
5
Millennium Management
New York
$5.37M
Name Market Value Shares Shares
Change 		Shares
Change %
Northern Trust
26
Northern Trust
Illinois
$3.57M 603,660 -534 -0.1%
HF
27
HRT Financial
New York
$3.53M 595,742 +518,243 +669%
GA
28
Gagnon Advisors
New York
$3.35M 565,570 +565,570 New
Charles Schwab
29
Charles Schwab
California
$3.23M 545,843 +58,112 +12%
RA
30
Royce & Associates
New York
$3.14M 531,068 -175,210 -25%
FCM
31
Frontier Capital Management
Massachusetts
$3.01M 508,651 -1,485 -0.3%
New York State Common Retirement Fund
32
New York State Common Retirement Fund
New York
$2.93M 494,462 +56,890 +13%
EIM
33
Essex Investment Management
Massachusetts
$2.53M 426,528 +193,788 +83%
BNP Paribas Financial Markets
34
BNP Paribas Financial Markets
France
$2.43M 411,066 +22,110 +6%
Marshall Wace
35
Marshall Wace
United Kingdom
$2.39M 404,006 +98,171 +32%
Baird Financial Group
36
Baird Financial Group
Wisconsin
$2.37M 399,740 -44,540 -10%
Royal Bank of Canada
37
Royal Bank of Canada
Ontario, Canada
$2.24M 378,516 +322,097 +571%
CM
38
CastleKnight Management
New York
$2.1M 355,399 – –
SM
39
Samjo Management
New York
$2.03M 343,625 -469,975 -58%
Citigroup
40
Citigroup
New York
$1.79M 302,817 +226,593 +297%
SIG
41
Sargent Investment Group
Maryland
$1.69M 205,697 -68,570 -25%
State of Wisconsin Investment Board
42
State of Wisconsin Investment Board
Wisconsin
$1.67M 282,623 +69,354 +33%
UBS Group
43
UBS Group
Switzerland
$1.62M 272,829 -147,559 -35%
Qube Research & Technologies (QRT)
44
Qube Research & Technologies (QRT)
United Kingdom
$1.51M 255,594 -172,990 -40%
VCM
45
Voleon Capital Management
California
$1.47M 248,839 +204,779 +465%
Deutsche Bank
46
Deutsche Bank
Germany
$1.27M 215,018 -44,535 -17%
First Trust Advisors
47
First Trust Advisors
Illinois
$1.22M 205,563 -64,176 -24%
Bank of New York Mellon
48
Bank of New York Mellon
New York
$1.19M 200,990 +12,424 +7%
AG
49
Algert Global
California
$1.13M 190,325 -308,413 -62%
AQR Capital Management
50
AQR Capital Management
Connecticut
$1.12M 189,831 +39,645 +26%
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