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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 %
NRD
101
Nebula Research & Development
New York
$210K 35,414 -22,402 -39%
CIS
102
Connors Investor Services
Pennsylvania
$208K 35,167 +15,000 +74%
PM
103
Penbrook Management
New York
$200K 32,335 +14,180 +78%
Group One Trading
104
Group One Trading
Illinois
$197K 33,353 +5,774 +21%
Janus Henderson Group
105
Janus Henderson Group
United Kingdom
$180K 30,455 – –
FC
106
FORA Capital
Florida
$174K 29,452 +17,090 +138%
Raymond James Financial
107
Raymond James Financial
Florida
$157K 26,559 +1,687 +7%
WIC
108
Woodmont Investment Counsel
Tennessee
$151K 25,503 -4,500 -15%
Manulife (Manufacturers Life Insurance)
109
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$146K 24,671 +2,656 +12%
IA
110
IFP Advisors
Florida
$123K 20,749 -5,967 -22%
D.E. Shaw & Co
111
D.E. Shaw & Co
New York
$123K 20,722 -4,067 -16%
CC
112
Corton Capital
Ontario, Canada
$122K 20,612 +20,612 New
ASRS
113
Arizona State Retirement System
Arizona
$121K 20,367 +363 +2%
OC
114
Oppenheimer & Co
New York
$117K 19,779 -183,381 -90%
Osaic Holdings
115
Osaic Holdings
Arizona
$116K 9,777 +1,552 +19%
Allspring Global Investments
116
Allspring Global Investments
North Carolina
$109K 17,807 -281,504 -94%
VOYA Investment Management
117
VOYA Investment Management
Georgia
$109K 18,399 +1,793 +11%
A
118
AlphaQuest
New York
$107K 18,154 -24,780 -58%
QCM
119
Quantinno Capital Management
New York
$106K 17,938 +17,938 New
CIA
120
Concurrent Investment Advisors
Florida
$104K 17,604 +511 +3%
AAS
121
Avantax Advisory Services
Texas
$102K 17,253 -3,272 -16%
MML Investors Services
122
MML Investors Services
Massachusetts
$94K 15,794 +15,794 New
Creative Planning
123
Creative Planning
Kansas
$90.7K 15,324 +15,324 New
American Century Companies
124
American Century Companies
Missouri
$89.1K 15,044 +15,044 New
State Board of Administration of Florida Retirement System
125
State Board of Administration of Florida Retirement System
Florida
$86.5K 14,618 – –
3 4
5
6 7