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, Q1 2026
Institutional positions in Aspen Aerogels Inc as of Mar 31, 2026. 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
- 166
- −15 vs. Q4 2025
- Shares held
- 69.3M
- +3.89M (+5.9%) vs. Q4 2025
- Total value
- $236.7M
- +$51.0M (+27.5%) vs. Q4 2025
- New holders
- 34
- 44 more added
- Sold out
- 49
- 57 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| RBF Capital, LLC | 100,000 | $342.0K | 0.02% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 102,676 | $351.2K | 0.00% | −17,562−14.6% | Reduced |
| HSBC Holdings PLC | 104,982 | $359.1K | 0.00% | +81,656+350.1% | Added |
| Price T Rowe Associates Inc | 107,300 | $367.0K | 0.00% | +9,001+9.2% | Added |
| Russell Investments Group, Ltd. | 114,386 | $391.2K | 0.00% | +18,735+19.6% | Added |
| Sargent Investment Group, LLC | 116,457 | $398.3K | 0.05% | −25,150−17.8% | Reduced |
| Dynamic Technology Lab Private Ltd | 121,694 | $416.2K | 0.07% | +18,413+17.8% | Added |
| Alps Advisors Inc | 124,353 | $425.3K | 0.00% | +7,981+6.9% | Added |
| Firsthand Capital Management, Inc. | 125,000 | $427.5K | 0.91% | 00.0% | Unchanged |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 127,480 | $436.0K | 0.00% | −3,988−3.0% | Reduced |
| Nuveen, LLC | 134,667 | $460.6K | 0.00% | +800+0.6% | Added |
| Lazard Asset Management LLC | 141,745 | $484.8K | 0.00% | +141,745 | New |
| Man Group plc | 143,322 | $490.2K | 0.00% | +143,322 | New |
| EntryPoint Capital, LLC | 146,673 | $501.6K | 0.15% | +36,531+33.2% | Added |
| Engineers Gate Manager LP | 148,159 | $506.7K | 0.01% | +28,932+24.3% | Added |
| Balyasny Asset Management LLC | 149,373 | $510.9K | 0.00% | +149,373 | New |
| CWM Advisors, LLC | 151,004 | $516.4K | 0.03% | −15,870−9.5% | Reduced |
| Tudor Investment Corp Et Al | 151,093 | $516.7K | 0.00% | +71,922+90.8% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 157,400 | $538.3K | 0.00% | 00.0% | Unchanged |
| Ironwood Investment Management LLC | 166,646 | $569.9K | 0.24% | +39,186+30.7% | Added |
| First Trust Advisors LP | 181,234 | $619.8K | 0.00% | −15,332−7.8% | Reduced |
| Bank of New York Mellon Corp | 185,673 | $635.0K | 0.00% | −11,230−5.7% | Reduced |
| Jane Street Group, LLC | 187,860 | $642.5K | 0.00% | −105,290−35.9% | Reduced |
| Morgan Stanley | 188,306 | $644.0K | 0.00% | −159,342−45.8% | Reduced |
| UBS Group AG | 189,229 | $647.2K | 0.00% | −126,119−40.0% | Reduced |
| XTX Topco Ltd | 201,367 | $688.7K | 0.01% | −663−0.3% | Reduced |
| Citigroup Inc | 233,665 | $799.1K | 0.00% | −4,966−2.1% | Reduced |
| Bank of America Corp | 241,020 | $824.3K | 0.00% | −511,410−68.0% | Reduced |
| Point72 Asset Management, L.P. | 256,614 | $877.6K | 0.00% | +256,614 | New |
| Susquehanna International Group, LLP | 274,317 | $938.2K | 0.00% | +83,113+43.5% | Added |
| Algert Global LLC | 326,410 | $1.12M | 0.02% | +270,575+484.6% | Added |
| Deutsche Bank AG | 359,535 | $1.23M | 0.00% | +136,442+61.2% | Added |
| Two Sigma Investments, LP | 441,436 | $1.51M | 0.00% | −315,983−41.7% | Reduced |
| Palogic Value Management, L.P. | 450,000 | $1.54M | 0.67% | −75,000−14.3% | Reduced |
| Federated Hermes, Inc. | 450,036 | $1.54M | 0.00% | −114,450−20.3% | Reduced |
| Vanguard Fiduciary Trust Co | 454,402 | $1.55M | 0.00% | +454,402 | New |
| Northern Trust Corp | 523,422 | $1.79M | 0.00% | −15,746−2.9% | Reduced |
| AQR Capital Management LLC | 526,119 | $1.80M | 0.00% | +156,170+42.2% | Added |
| Charles Schwab Investment Management Inc | 556,725 | $1.90M | 0.00% | +16,402+3.0% | Added |
| Citadel Advisors LLC | 581,187 | $1.99M | 0.00% | −285,031−32.9% | Reduced |
| Samjo Management, LLC | 645,625 | $2.21M | 0.95% | −152,900−19.1% | Reduced |
| BNP Paribas Arbitrage, SA | 697,932 | $2.39M | 0.00% | +6,662+1.0% | Added |
| Vanguard Portfolio Management LLC | 716,732 | $2.45M | 0.00% | +716,732 | New |
| D. E. Shaw & Co., Inc. | 833,572 | $2.85M | 0.00% | +810,355+3,490.4% | Added |
| HRT Financial LP | 870,435 | $2.98M | 0.01% | +870,435 | New |
| JPMorgan Chase & Co | 965,492 | $3.06M | 0.00% | −518,253−34.9% | Reduced |
| Goldman Sachs Group Inc | 899,513 | $3.08M | 0.00% | −395,415−30.5% | Reduced |
| Royce & Associates LP | 986,513 | $3.37M | 0.03% | +986,513 | New |
| Telemark Asset Management, LLC | 1,000,000 | $3.42M | 0.32% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 1,218,779 | $4.17M | 0.02% | +1,078,666+769.9% | Added |
| American Century Companies Inc | 1,247,783 | $4.27M | 0.00% | +89,805+7.8% | Added |
| Dimensional Fund Advisors LP | 1,256,480 | $4.30M | 0.00% | −747,483−37.3% | Reduced |
| Marshall Wace, LLP | 1,263,102 | $4.32M | 0.00% | +708,922+127.9% | Added |
| Millennium Management LLC | 1,404,675 | $4.80M | 0.00% | +533,724+61.3% | Added |
| Ameriprise Financial Inc | 1,506,379 | $5.15M | 0.00% | +128,095+9.3% | Added |
| Geode Capital Management, LLC | 1,540,771 | $5.27M | 0.00% | −61,278−3.8% | Reduced |
| Rice Hall James & Associates, LLC | 1,552,628 | $5.31M | 0.30% | +131,023+9.2% | Added |
| Gagnon Securities LLC | 1,861,851 | $6.37M | 1.47% | +728,603+64.3% | Added |
| Invesco Ltd. | 2,298,183 | $7.86M | 0.00% | −1,831,751−44.4% | Reduced |
| State Street Corp | 2,320,727 | $7.94M | 0.00% | −180,742−7.2% | Reduced |
| George Kaiser Family Foundation | 3,167,322 | $10.8M | 1.23% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 3,436,156 | $11.8M | 0.00% | +3,436,156 | New |
| Needham Investment Management LLC | 4,518,775 | $15.5M | 0.79% | +167,075+3.8% | Added |
| BlackRock, Inc. | 4,743,076 | $16.2M | 0.00% | −186,163−3.8% | Reduced |
| Oaktop Capital Management II, L.P. | 5,168,674 | $17.7M | 1.32% | +774,149+17.6% | Added |
| Kim, LLC | 12,280,426 | $42.0M | 6.19% | 00.0% | Unchanged |
| First Eagle Investment Management, LLC | 0 | $0 | 0.00% | −622,487−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −551,071−100.0% | Sold out |
| FirstWave Capital Management LLC | 0 | $0 | 0.00% | −372,001−100.0% | Sold out |
| Los Angeles Capital Management LLC | 0 | $0 | 0.00% | −118,664−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −263,354−100.0% | Sold out |
| Swiss National Bank | 0 | $0 | 0.00% | −135,200−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −104,300−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −97,002−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −96,973−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −94,589−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −87,835−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −65,470−100.0% | Sold out |
| Aristides Capital LLC | 0 | $0 | 0.00% | −62,400−100.0% | Sold out |
| Connors Investor Services Inc | 0 | $0 | 0.00% | −55,167−100.0% | Sold out |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −43,842−100.0% | Sold out |
| AWM Investment Company, Inc. | 0 | $0 | 0.00% | −41,092−100.0% | Sold out |
| ARS Investment Partners, LLC | 0 | $0 | 0.00% | −40,765−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −36,100−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −35,583−100.0% | Sold out |
| PharVision Advisers, LLC | 0 | $0 | 0.00% | −33,808−100.0% | Sold out |
| Janus Henderson Group PLC | 0 | $0 | 0.00% | −30,455−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Journey Strategic Wealth LLC | 0 | $0 | 0.00% | −25,157−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −24,083−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −21,247−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −20,350−100.0% | Sold out |
| Voleon Capital Management LP | 0 | $0 | 0.00% | −19,675−100.0% | Sold out |
| Arizona State Retirement System | 0 | $0 | 0.00% | −19,323−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −18,154−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −16,005−100.0% | Sold out |
| Woodmont Investment Counsel LLC | 0 | $0 | 0.00% | −14,603−100.0% | Sold out |
| StoneX Group Inc. | 0 | $0 | 0.00% | −14,474−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −14,257−100.0% | Sold out |
| Winton Group Ltd | 0 | $0 | 0.00% | −14,200−100.0% | Sold out |