Aspen Aerogels
ASPN
166 hedge funds and large institutions have $237M invested in Aspen Aerogels in 2026 Q1 according to their latest regulatory filings, with 34 funds opening new positions, 44 increasing their positions, 57 reducing their positions, and 49 closing their positions.
226% more call options, than puts
Call options by funds: $2.66M | Put options by funds: $815K
19% more capital invested
Capital invested by funds: $199M → $237M (+$37.8M)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
1.15% less ownership
Funds ownership: 84.82% → 83.67% (-1.1%)
9% less funds holding
Funds holding: 183 → 166 (-17)
23% less repeat investments, than reductions
Existing positions increased: 44 | Existing positions reduced: 57
31% less first-time investments, than exits
New positions opened: 34 | Existing positions closed: 49
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
+$3.64M |
| 2 |
RA
Royce & Associates
New York
|
+$3.33M |
| 3 |
HF
HRT Financial
New York
|
+$2.93M |
| 4 |
D.E. Shaw & Co
New York
|
+$2.73M |
| 5 |
OCMI
Oaktop Capital Management II
Chatham,
New Jersey
|
+$2.61M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
-$6.17M |
| 2 |
Dimensional Fund Advisors
Austin,
Texas
|
-$2.52M |
| 3 |
First Eagle Investment Management
New York
|
-$1.76M |
| 4 |
JP Morgan Chase
New York
|
-$1.75M |
| 5 |
Bank of America
Charlotte,
North Carolina
|
-$1.72M |
ASPN Hedge Fund Activity: Q1 2026 in Review
166 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Aspen Aerogels (ASPN) for Q1 2026, worth a combined $237M — up 19% from $199M a quarter earlier.
Sellers outnumbered buyers: 49 funds closed out of ASPN and 34 opened new positions — a net loss of 15 holders — while 57 trimmed existing stakes and 44 added.
The largest buyer was Jacobs Levy Equity Management, adding an estimated $3.64M. The largest seller was Invesco, cutting an estimated $6.17M.
- 166 institutional investors held Aspen Aerogels (ASPN) as of Q1 2026, down from 183 in Q4 2025.
- Funds reported $237M of Aspen Aerogels stock for Q1 2026, up 19% quarter-over-quarter.
- 34 funds opened new Aspen Aerogels positions in Q1 2026 and 49 closed out, a net change of -15 holders.
- The largest Aspen Aerogels buyer in Q1 2026 was Jacobs Levy Equity Management, an estimated $3.64M added.
- The largest Aspen Aerogels seller in Q1 2026 was Invesco, an estimated $6.17M sold.
Based on aggregated 13F filings for Q1 2026.