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Aspen Aerogels

181 hedge funds and large institutions have $424M invested in Aspen Aerogels in 2025 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 76 increasing their positions, 53 reducing their positions, and 65 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

more funds holding in top 10

Funds holding in top 10:

7% less capital invested

Capital invested by funds: $458M → $424M (-$34.3M)

18% less funds holding

Funds holding: 221181 (-40)

62% less first-time investments, than exits

New positions opened: 25 | Existing positions closed: 65

Holders
181
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
$4.93M
Puts
$2.51M
Net Calls
Net Calls Change

Top Sellers

1 -$6.03M
2 -$5.83M
3 -$4.14M
4
DC
Dendur Capital
New York
-$4.12M
5
Millennium Management
Millennium Management
New York
-$3.98M
Name Holding Trade Value Shares
Change
Change in
Stake
51
$1.12M
52
$1.09M
53
$1M
54
$988K
55
$965K
56
$888K
57
$839K
58
$824K
59
$800K
60
$792K
61
$792K
62
$769K
63
$740K
64
$736K
65
$689K
66
$672K
67
$626K
68
$611K
69
$567K
70
$563K
71
$554K
72
$516K
73
$515K
74
$502K
75
$484K