Aspen Aerogels Inc
ASPN- Exchange
- NYSE
- Industry
- Wholesale-Lumber & Other Construction Materials
- SEC CIK
- 0001145986
In the last 90 days, Aspen Aerogels Inc insiders filed 0 open-market purchases and 1 sale; 179 institutions reported holding it in 13F filings for Q2 2026, worth $464.9M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Aspen Aerogels Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 183
- −16 vs. Q3 2025
- Shares held
- 70.1M
- −1.02M (−1.4%) vs. Q3 2025
- Total value
- $199.0M
- −$296.1M (−59.8%) vs. Q3 2025
- New holders
- 42
- 46 more added
- Sold out
- 58
- 64 more reduced
5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ASPN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 179 | $464.9M |
| Q1 2026 | 166 | $236.7M |
| Q4 2025 | 183 | $199.0M |
| Q3 2025 | 204 | $496.8M |
| Q2 2025 | 182 | $423.4M |
| Q1 2025 | 221 | $455.4M |
| Q4 2024 | 231 | $868.2M |
| Q3 2024 | 243 | $1.93B |
| Q2 2024 | 222 | $1.69B |
| Q1 2024 | 167 | $1.31B |
| Q4 2023 | 170 | $1.18B |
| Q3 2023 | 159 | $582.9M |
| Q2 2023 | 159 | $524.6M |
| Q1 2023 | 156 | $498.6M |
| Q4 2022 | 164 | $793.4M |
| Q3 2022 | 140 | $344.0M |
| Q2 2022 | 148 | $366.3M |
| Q1 2022 | 145 | $1.09B |
| Q4 2021 | 159 | $1.42B |
| Q3 2021 | 130 | $1.27B |
| Q2 2021 | 115 | $849.9M |
| Q1 2021 | 85 | $482.2M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Acadian Asset Management LLC | 43,842 | $122.0K | 0.00% | +43,842 | New |
| LPL Financial LLC | 55,076 | $155.9K | 0.00% | −55,781−50.3% | Reduced |
| Connors Investor Services Inc | 55,167 | $156.1K | 0.01% | +15,000+37.3% | Added |
| Algert Global LLC | 55,835 | $158.0K | 0.00% | −38,820−41.0% | Reduced |
| Aristides Capital LLC | 62,400 | $176.6K | 0.06% | +62,400 | New |
| Alliancebernstein L.P. | 64,090 | $181.4K | 0.00% | 00.0% | Unchanged |
| WJ Financial Advisors LLC | 64,815 | $183.4K | 0.16% | +64,815 | New |
| ExodusPoint Capital Management, LP | 65,470 | $185.3K | 0.00% | −50,952−43.8% | Reduced |
| Legal & General Group Plc | 67,130 | $190.0K | 0.00% | 00.0% | Unchanged |
| Oppenheimer & Co Inc | 77,021 | $218.0K | 0.00% | −44,805−36.8% | Reduced |
| California State Teachers Retirement System | 78,454 | $222.0K | 0.00% | +17,784+29.3% | Added |
| Tudor Investment Corp Et Al | 79,171 | $224.1K | 0.00% | −407,425−83.7% | Reduced |
| Wells Fargo & Company | 82,170 | $232.5K | 0.00% | +28,401+52.8% | Added |
| Jain Global LLC | 87,835 | $248.6K | 0.00% | +87,835 | New |
| Rhumbline Advisers | 89,318 | $252.8K | 0.00% | −21,414−19.3% | Reduced |
| UBS Asset Management Americas Inc | 94,589 | $267.7K | 0.00% | 00.0% | Unchanged |
| Russell Investments Group, Ltd. | 95,651 | $270.7K | 0.00% | −38,596−28.7% | Reduced |
| Verition Fund Management LLC | 96,973 | $274.4K | 0.00% | +31,011+47.0% | Added |
| Assenagon Asset Management S.A. | 97,002 | $274.5K | 0.00% | +97,002 | New |
| Price T Rowe Associates Inc | 98,299 | $279.0K | 0.00% | +21,673+28.3% | Added |
| RBF Capital, LLC | 100,000 | $283.0K | 0.01% | +100,000 | New |
| IMC-Chicago, LLC | 102,930 | $291.3K | 0.01% | −267−0.3% | Reduced |
| Dynamic Technology Lab Private Ltd | 103,281 | $292.0K | 0.07% | +103,281 | New |
| Two Sigma Advisers, LP | 104,300 | $295.2K | 0.00% | −200−0.2% | Reduced |
| Barclays PLC | 109,528 | $310.0K | 0.00% | +10,163+10.2% | Added |
| EntryPoint Capital, LLC | 110,142 | $311.7K | 0.12% | +44,969+69.0% | Added |
| Alps Advisors Inc | 116,372 | $329.3K | 0.00% | −7,305−5.9% | Reduced |
| Engineers Gate Manager LP | 119,227 | $337.4K | 0.00% | +119,227 | New |
| State of Wisconsin Investment Board | 120,238 | $340.3K | 0.00% | −136,552−53.2% | Reduced |
| Firsthand Capital Management, Inc. | 125,000 | $353.8K | 0.66% | 00.0% | Unchanged |
| Ironwood Investment Management LLC | 127,460 | $360.7K | 0.15% | −6,902−5.1% | Reduced |
| Nuveen, LLC | 133,867 | $378.8K | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 131,468 | $379.9K | 0.00% | +61,291+87.3% | Added |
| Swiss National Bank | 135,200 | $382.6K | 0.00% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 140,113 | $396.5K | 0.00% | +140,113 | New |
| Sargent Investment Group, LLC | 141,607 | $400.7K | 0.05% | −47,620−25.2% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 157,400 | $445.4K | 0.00% | +157,400 | New |
| Graham Capital Management, L.P. | 158,839 | $449.5K | 0.02% | +52,959+50.0% | Added |
| CWM Advisors, LLC | 166,874 | $472.3K | 0.04% | +100,759+152.4% | Added |
| Susquehanna International Group, LLP | 191,204 | $541.1K | 0.00% | +22,357+13.2% | Added |
| First Trust Advisors LP | 196,566 | $556.3K | 0.00% | +598+0.3% | Added |
| Bank of New York Mellon Corp | 196,903 | $557.2K | 0.00% | −18,045−8.4% | Reduced |
| XTX Topco Ltd | 202,030 | $571.7K | 0.02% | +179,231+786.1% | Added |
| Deutsche Bank AG | 223,093 | $631.4K | 0.00% | +2,880+1.3% | Added |
| Citigroup Inc | 238,631 | $675.3K | 0.00% | +28,086+13.3% | Added |
| Numerai GP LLC | 251,888 | $712.8K | 0.09% | +233,608+1,277.9% | Added |
| SG Americas Securities, LLC | 263,354 | $745.0K | 0.00% | +182,931+227.5% | Added |
| Jane Street Group, LLC | 293,150 | $829.6K | 0.00% | +132,025+81.9% | Added |
| UBS Group AG | 315,348 | $892.4K | 0.00% | −81,461−20.5% | Reduced |
| Los Angeles Capital Management LLC | 118,664 | $893.5K | 0.00% | −20,549−14.8% | Reduced |
| Morgan Stanley | 347,648 | $983.8K | 0.00% | −346,840−49.9% | Reduced |
| AQR Capital Management LLC | 369,949 | $1.05M | 0.00% | +192,144+108.1% | Added |
| FirstWave Capital Management LLC | 372,001 | $1.05M | 0.63% | +372,001 | New |
| Palogic Value Management, L.P. | 525,000 | $1.49M | 0.64% | +325,000+162.5% | Added |
| Northern Trust Corp | 539,168 | $1.53M | 0.00% | −74,430−12.1% | Reduced |
| Charles Schwab Investment Management Inc | 540,323 | $1.53M | 0.00% | −32,265−5.6% | Reduced |
| Jump Financial, LLC | 551,071 | $1.56M | 0.02% | +12,771+2.4% | Added |
| Marshall Wace, LLP | 554,180 | $1.57M | 0.00% | +241,990+77.5% | Added |
| Federated Hermes, Inc. | 564,486 | $1.60M | 0.00% | +274,555+94.7% | Added |
| First Eagle Investment Management, LLC | 622,487 | $1.76M | 0.00% | +105,164+20.3% | Added |
| BNP Paribas Arbitrage, SA | 691,270 | $1.96M | 0.00% | −878−0.1% | Reduced |
| Bank of America Corp | 752,430 | $2.13M | 0.00% | −62,419−7.7% | Reduced |
| Two Sigma Investments, LP | 757,419 | $2.14M | 0.00% | −54,109−6.7% | Reduced |
| Samjo Management, LLC | 798,525 | $2.26M | 0.87% | +457,700+134.3% | Added |
| Citadel Advisors LLC | 866,218 | $2.45M | 0.00% | −248,372−22.3% | Reduced |
| Millennium Management LLC | 870,951 | $2.46M | 0.00% | −576,566−39.8% | Reduced |
| Telemark Asset Management, LLC | 1,000,000 | $2.83M | 0.28% | −792,424−44.2% | Reduced |
| Gagnon Securities LLC | 1,133,248 | $3.21M | 0.65% | −621,585−35.4% | Reduced |
| American Century Companies Inc | 1,157,978 | $3.28M | 0.00% | +686,666+145.7% | Added |
| Goldman Sachs Group Inc | 1,294,928 | $3.66M | 0.00% | −124,876−8.8% | Reduced |
| Ameriprise Financial Inc | 1,378,284 | $3.90M | 0.00% | +1,378,284 | New |
| Rice Hall James & Associates, LLC | 1,421,605 | $4.02M | 0.22% | +13,879+1.0% | Added |
| JPMorgan Chase & Co | 1,483,745 | $4.20M | 0.00% | +133,996+9.9% | Added |
| Geode Capital Management, LLC | 1,602,049 | $4.53M | 0.00% | +17,178+1.1% | Added |
| Dimensional Fund Advisors LP | 2,003,963 | $5.67M | 0.00% | −248,050−11.0% | Reduced |
| State Street Corp | 2,501,469 | $7.08M | 0.00% | +556,833+28.6% | Added |
| George Kaiser Family Foundation | 3,167,322 | $8.96M | 1.20% | 00.0% | Unchanged |
| Invesco Ltd. | 4,129,934 | $11.7M | 0.00% | +2,907,558+237.9% | Added |
| Needham Investment Management LLC | 4,351,700 | $12.3M | 0.78% | +912,000+26.5% | Added |
| Oaktop Capital Management II, L.P. | 4,394,525 | $12.4M | 1.05% | 00.0% | Unchanged |
| Vanguard Group Inc | 4,685,950 | $13.3M | 0.00% | +175,580+3.9% | Added |
| BlackRock, Inc. | 4,929,239 | $13.9M | 0.00% | −48,319−1.0% | Reduced |
| Kim, LLC | 12,280,426 | $34.8M | 3.98% | 00.0% | Unchanged |
| Penn Capital Management Co Inc | 0 | $0 | 0.00% | −1,036,995−100.0% | Sold out |
| Peregrine Investment Management Inc | 0 | $0 | 0.00% | −600,000−100.0% | Sold out |
| Gagnon Advisors, LLC | 0 | $0 | 0.00% | −565,570−100.0% | Sold out |
| Essex Investment Management Co LLC | 0 | $0 | 0.00% | −390,033−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −260,157−100.0% | Sold out |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −246,900−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −184,300−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −167,423−100.0% | Sold out |
| CastleKnight Management LP | 0 | $0 | 0.00% | −162,599−100.0% | Sold out |
| Qube Research & Technologies Ltd | 0 | $0 | 0.00% | −126,275−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −90,850−100.0% | Sold out |
| Atom Investors LP | 0 | $0 | 0.00% | −82,648−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −80,197−100.0% | Sold out |
| Counterpoint Mutual Funds LLC | 0 | $0 | 0.00% | −71,595−100.0% | Sold out |
| Harbour Capital Advisors, LLC | 0 | $0 | 0.00% | −58,675−100.0% | Sold out |
| Brevan Howard Capital Management LP | 0 | $0 | 0.00% | −55,400−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −49,750−100.0% | Sold out |