ASPN icon

Aspen Aerogels

204 hedge funds and large institutions have $497M invested in Aspen Aerogels in 2025 Q3 according to their latest regulatory filings, with 51 funds opening new positions, 63 increasing their positions, 56 reducing their positions, and 28 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
204
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$11.6M
Puts
$3.28M
Net Calls
Net Calls Change

Top Sellers

1 -$10.4M
2 -$5.51M
3 -$3.14M
4
Renaissance Technologies
Renaissance Technologies
New York
-$3.05M
5
HF
HRT Financial
New York
-$3.02M
Name Holding Trade Value Shares
Change
Change in
Stake
101
$274K
102
$252K
103
$244K
104
$242K
105
$217K
106
$212K
107
$212K
108
$209K
109
$162K
110
$162K
111
$159K
112
$158K
113
$153K
114
$150K
115
$147K
116
$146K
117
$144K
118
$140K
119
$127K
120
$126K
121
$118K
122
$113K
123
$104K
124
$102K
125
$102K