ASPN icon

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
+$5.49M
4
Invesco
Invesco
Georgia
+$4.5M
5
RHJA
Rice Hall James & Associates
California
+$4.24M

Top Sellers

1
Fidelity Investments
Fidelity Investments
Massachusetts
-$6.2M
2
AIC
AWM Investment Company
New York
-$6M
3
MIM
MetLife Investment Management
New Jersey
-$4.26M
4
DC
Dendur Capital
New York
-$4.12M
5
Millennium Management
Millennium Management
New York
-$4.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
Northern Trust
26
Northern Trust
Illinois
$3.57M -$3.16K -534 -0.1%
HF
27
HRT Financial
New York
$3.53M +$3.07M +518,243 +669%
GA
28
Gagnon Advisors
New York
$3.35M +$3.35M +565,570 New
Charles Schwab
29
Charles Schwab
California
$3.23M +$344K +58,112 +12%
RA
30
Royce & Associates
New York
$3.14M -$1.04M -175,210 -25%
FCM
31
Frontier Capital Management
Massachusetts
$3.01M -$8.79K -1,485 -0.3%
New York State Common Retirement Fund
32
New York State Common Retirement Fund
New York
$2.93M +$337K +56,890 +13%
EIM
33
Essex Investment Management
Massachusetts
$2.53M +$1.15M +193,788 +83%
BNP Paribas Financial Markets
34
BNP Paribas Financial Markets
France
$2.43M +$131K +22,110 +6%
Marshall Wace
35
Marshall Wace
United Kingdom
$2.39M +$581K +98,171 +32%
Baird Financial Group
36
Baird Financial Group
Wisconsin
$2.37M -$264K -44,540 -10%
Royal Bank of Canada
37
Royal Bank of Canada
Ontario, Canada
$2.24M +$1.91M +322,097 +571%
CM
38
CastleKnight Management
New York
$2.1M – – –
SM
39
Samjo Management
New York
$2.03M -$2.78M -469,975 -58%
Citigroup
40
Citigroup
New York
$1.79M +$1.34M +226,593 +297%
SIG
41
Sargent Investment Group
Maryland
$1.69M -$565K -68,570 -25%
State of Wisconsin Investment Board
42
State of Wisconsin Investment Board
Wisconsin
$1.67M +$411K +69,354 +33%
Susquehanna International Group
43
Susquehanna International Group
Pennsylvania
$1.65M +$391K +66,083 +31%
UBS Group
44
UBS Group
Switzerland
$1.62M -$874K -147,559 -35%
Qube Research & Technologies (QRT)
45
Qube Research & Technologies (QRT)
United Kingdom
$1.51M -$1.02M -172,990 -40%
VCM
46
Voleon Capital Management
California
$1.47M +$1.21M +204,779 +465%
Deutsche Bank
47
Deutsche Bank
Germany
$1.27M -$264K -44,535 -17%
First Trust Advisors
48
First Trust Advisors
Illinois
$1.22M -$380K -64,176 -24%
Bank of New York Mellon
49
Bank of New York Mellon
New York
$1.19M +$73.6K +12,424 +7%
AG
50
Algert Global
California
$1.13M -$1.83M -308,413 -62%
1
2
3 4 5