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 |
|---|---|---|---|---|---|
| Kim, LLC | 12,280,426 | $34.8M | 3.98% | 00.0% | Unchanged |
| BlackRock, Inc. | 4,929,239 | $13.9M | 0.00% | −48,319−1.0% | Reduced |
| Vanguard Group Inc | 4,685,950 | $13.3M | 0.00% | +175,580+3.9% | Added |
| Oaktop Capital Management II, L.P. | 4,394,525 | $12.4M | 1.05% | 00.0% | Unchanged |
| Needham Investment Management LLC | 4,351,700 | $12.3M | 0.78% | +912,000+26.5% | Added |
| Invesco Ltd. | 4,129,934 | $11.7M | 0.00% | +2,907,558+237.9% | Added |
| George Kaiser Family Foundation | 3,167,322 | $8.96M | 1.20% | 00.0% | Unchanged |
| State Street Corp | 2,501,469 | $7.08M | 0.00% | +556,833+28.6% | Added |
| Dimensional Fund Advisors LP | 2,003,963 | $5.67M | 0.00% | −248,050−11.0% | Reduced |
| Geode Capital Management, LLC | 1,602,049 | $4.53M | 0.00% | +17,178+1.1% | Added |
| JPMorgan Chase & Co | 1,483,745 | $4.20M | 0.00% | +133,996+9.9% | Added |
| Rice Hall James & Associates, LLC | 1,421,605 | $4.02M | 0.22% | +13,879+1.0% | Added |
| Ameriprise Financial Inc | 1,378,284 | $3.90M | 0.00% | +1,378,284 | New |
| Goldman Sachs Group Inc | 1,294,928 | $3.66M | 0.00% | −124,876−8.8% | Reduced |
| American Century Companies Inc | 1,157,978 | $3.28M | 0.00% | +686,666+145.7% | Added |
| Gagnon Securities LLC | 1,133,248 | $3.21M | 0.65% | −621,585−35.4% | Reduced |
| Telemark Asset Management, LLC | 1,000,000 | $2.83M | 0.28% | −792,424−44.2% | Reduced |
| Millennium Management LLC | 870,951 | $2.46M | 0.00% | −576,566−39.8% | Reduced |
| Citadel Advisors LLC | 866,218 | $2.45M | 0.00% | −248,372−22.3% | Reduced |
| Samjo Management, LLC | 798,525 | $2.26M | 0.87% | +457,700+134.3% | Added |
| Two Sigma Investments, LP | 757,419 | $2.14M | 0.00% | −54,109−6.7% | Reduced |
| Bank of America Corp | 752,430 | $2.13M | 0.00% | −62,419−7.7% | Reduced |
| BNP Paribas Arbitrage, SA | 691,270 | $1.96M | 0.00% | −878−0.1% | Reduced |
| First Eagle Investment Management, LLC | 622,487 | $1.76M | 0.00% | +105,164+20.3% | Added |
| Federated Hermes, Inc. | 564,486 | $1.60M | 0.00% | +274,555+94.7% | Added |
| Marshall Wace, LLP | 554,180 | $1.57M | 0.00% | +241,990+77.5% | Added |
| Jump Financial, LLC | 551,071 | $1.56M | 0.02% | +12,771+2.4% | Added |
| Charles Schwab Investment Management Inc | 540,323 | $1.53M | 0.00% | −32,265−5.6% | Reduced |
| Northern Trust Corp | 539,168 | $1.53M | 0.00% | −74,430−12.1% | Reduced |
| Palogic Value Management, L.P. | 525,000 | $1.49M | 0.64% | +325,000+162.5% | Added |
| FirstWave Capital Management LLC | 372,001 | $1.05M | 0.63% | +372,001 | New |
| AQR Capital Management LLC | 369,949 | $1.05M | 0.00% | +192,144+108.1% | Added |
| Morgan Stanley | 347,648 | $983.8K | 0.00% | −346,840−49.9% | Reduced |
| Los Angeles Capital Management LLC | 118,664 | $893.5K | 0.00% | −20,549−14.8% | Reduced |
| UBS Group AG | 315,348 | $892.4K | 0.00% | −81,461−20.5% | Reduced |
| Jane Street Group, LLC | 293,150 | $829.6K | 0.00% | +132,025+81.9% | Added |
| SG Americas Securities, LLC | 263,354 | $745.0K | 0.00% | +182,931+227.5% | Added |
| Numerai GP LLC | 251,888 | $712.8K | 0.09% | +233,608+1,277.9% | Added |
| Citigroup Inc | 238,631 | $675.3K | 0.00% | +28,086+13.3% | Added |
| Deutsche Bank AG | 223,093 | $631.4K | 0.00% | +2,880+1.3% | Added |
| XTX Topco Ltd | 202,030 | $571.7K | 0.02% | +179,231+786.1% | Added |
| Bank of New York Mellon Corp | 196,903 | $557.2K | 0.00% | −18,045−8.4% | Reduced |
| First Trust Advisors LP | 196,566 | $556.3K | 0.00% | +598+0.3% | Added |
| Susquehanna International Group, LLP | 191,204 | $541.1K | 0.00% | +22,357+13.2% | Added |
| CWM Advisors, LLC | 166,874 | $472.3K | 0.04% | +100,759+152.4% | Added |
| Graham Capital Management, L.P. | 158,839 | $449.5K | 0.02% | +52,959+50.0% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 157,400 | $445.4K | 0.00% | +157,400 | New |
| Sargent Investment Group, LLC | 141,607 | $400.7K | 0.05% | −47,620−25.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 140,113 | $396.5K | 0.00% | +140,113 | New |
| Swiss National Bank | 135,200 | $382.6K | 0.00% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 131,468 | $379.9K | 0.00% | +61,291+87.3% | Added |
| Nuveen, LLC | 133,867 | $378.8K | 0.00% | 00.0% | Unchanged |
| Ironwood Investment Management LLC | 127,460 | $360.7K | 0.15% | −6,902−5.1% | Reduced |
| Firsthand Capital Management, Inc. | 125,000 | $353.8K | 0.66% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 120,238 | $340.3K | 0.00% | −136,552−53.2% | Reduced |
| Engineers Gate Manager LP | 119,227 | $337.4K | 0.00% | +119,227 | New |
| Alps Advisors Inc | 116,372 | $329.3K | 0.00% | −7,305−5.9% | Reduced |
| EntryPoint Capital, LLC | 110,142 | $311.7K | 0.12% | +44,969+69.0% | Added |
| Barclays PLC | 109,528 | $310.0K | 0.00% | +10,163+10.2% | Added |
| Two Sigma Advisers, LP | 104,300 | $295.2K | 0.00% | −200−0.2% | Reduced |
| Dynamic Technology Lab Private Ltd | 103,281 | $292.0K | 0.07% | +103,281 | New |
| IMC-Chicago, LLC | 102,930 | $291.3K | 0.01% | −267−0.3% | Reduced |
| RBF Capital, LLC | 100,000 | $283.0K | 0.01% | +100,000 | New |
| Price T Rowe Associates Inc | 98,299 | $279.0K | 0.00% | +21,673+28.3% | Added |
| Assenagon Asset Management S.A. | 97,002 | $274.5K | 0.00% | +97,002 | New |
| Verition Fund Management LLC | 96,973 | $274.4K | 0.00% | +31,011+47.0% | Added |
| Russell Investments Group, Ltd. | 95,651 | $270.7K | 0.00% | −38,596−28.7% | Reduced |
| UBS Asset Management Americas Inc | 94,589 | $267.7K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 89,318 | $252.8K | 0.00% | −21,414−19.3% | Reduced |
| Jain Global LLC | 87,835 | $248.6K | 0.00% | +87,835 | New |
| Wells Fargo & Company | 82,170 | $232.5K | 0.00% | +28,401+52.8% | Added |
| Tudor Investment Corp Et Al | 79,171 | $224.1K | 0.00% | −407,425−83.7% | Reduced |
| California State Teachers Retirement System | 78,454 | $222.0K | 0.00% | +17,784+29.3% | Added |
| Oppenheimer & Co Inc | 77,021 | $218.0K | 0.00% | −44,805−36.8% | Reduced |
| Legal & General Group Plc | 67,130 | $190.0K | 0.00% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 65,470 | $185.3K | 0.00% | −50,952−43.8% | Reduced |
| WJ Financial Advisors LLC | 64,815 | $183.4K | 0.16% | +64,815 | New |
| Alliancebernstein L.P. | 64,090 | $181.4K | 0.00% | 00.0% | Unchanged |
| Aristides Capital LLC | 62,400 | $176.6K | 0.06% | +62,400 | New |
| Algert Global LLC | 55,835 | $158.0K | 0.00% | −38,820−41.0% | Reduced |
| Connors Investor Services Inc | 55,167 | $156.1K | 0.01% | +15,000+37.3% | Added |
| LPL Financial LLC | 55,076 | $155.9K | 0.00% | −55,781−50.3% | Reduced |
| Acadian Asset Management LLC | 43,842 | $122.0K | 0.00% | +43,842 | New |
| Odyssean, LLC | 41,759 | $118.2K | 0.08% | +41,759 | New |
| AWM Investment Company, Inc. | 41,092 | $116.3K | 0.01% | −1,514,385−97.4% | Reduced |
| ARS Investment Partners, LLC | 40,765 | $115.4K | 0.01% | −19,242−32.1% | Reduced |
| Caption Management, LLC | 36,100 | $102.2K | 0.00% | +6,100+20.3% | Added |
| Quadrature Capital Ltd | 35,583 | $100.7K | 0.00% | +25,373+248.5% | Added |
| PharVision Advisers, LLC | 33,808 | $95.7K | 0.05% | +33,808 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 30,799 | $87.2K | 0.00% | −360−1.2% | Reduced |
| Janus Henderson Group PLC | 30,455 | $86.3K | 0.00% | 00.0% | Unchanged |
| Lighthouse Investment Partners, LLC | 30,000 | $84.9K | 0.00% | +30,000 | New |
| Concurrent Investment Advisors, LLC | 30,000 | $84.9K | 0.00% | +30,000 | New |
| MetLife Investment Management | 27,154 | $76.8K | 0.00% | −3,289−10.8% | Reduced |
| Intech Investment Management LLC | 25,382 | $71.8K | 0.00% | −19,582−43.6% | Reduced |
| Journey Strategic Wealth LLC | 25,157 | $71.2K | 0.00% | +25,157 | New |
| Oxford Asset Management LLP | 24,083 | $68.2K | 0.02% | +24,083 | New |
| HSBC Holdings PLC | 23,326 | $66.0K | 0.00% | +23,326 | New |
| D. E. Shaw & Co., Inc. | 23,217 | $65.7K | 0.00% | +9,995+75.6% | Added |
| Centiva Capital, LP | 21,247 | $60.1K | 0.00% | +21,247 | New |