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 |
|---|---|---|---|---|---|
| Kim, LLC | 12,280,426 | $42.0M | 6.19% | 00.0% | Unchanged |
| Oaktop Capital Management II, L.P. | 5,168,674 | $17.7M | 1.32% | +774,149+17.6% | Added |
| BlackRock, Inc. | 4,743,076 | $16.2M | 0.00% | −186,163−3.8% | Reduced |
| Needham Investment Management LLC | 4,518,775 | $15.5M | 0.79% | +167,075+3.8% | Added |
| Vanguard Capital Management LLC | 3,436,156 | $11.8M | 0.00% | +3,436,156 | New |
| George Kaiser Family Foundation | 3,167,322 | $10.8M | 1.23% | 00.0% | Unchanged |
| State Street Corp | 2,320,727 | $7.94M | 0.00% | −180,742−7.2% | Reduced |
| Invesco Ltd. | 2,298,183 | $7.86M | 0.00% | −1,831,751−44.4% | Reduced |
| Gagnon Securities LLC | 1,861,851 | $6.37M | 1.47% | +728,603+64.3% | Added |
| Rice Hall James & Associates, LLC | 1,552,628 | $5.31M | 0.30% | +131,023+9.2% | Added |
| Geode Capital Management, LLC | 1,540,771 | $5.27M | 0.00% | −61,278−3.8% | Reduced |
| Ameriprise Financial Inc | 1,506,379 | $5.15M | 0.00% | +128,095+9.3% | Added |
| Millennium Management LLC | 1,404,675 | $4.80M | 0.00% | +533,724+61.3% | Added |
| Marshall Wace, LLP | 1,263,102 | $4.32M | 0.00% | +708,922+127.9% | Added |
| Dimensional Fund Advisors LP | 1,256,480 | $4.30M | 0.00% | −747,483−37.3% | Reduced |
| American Century Companies Inc | 1,247,783 | $4.27M | 0.00% | +89,805+7.8% | Added |
| Jacobs Levy Equity Management, Inc | 1,218,779 | $4.17M | 0.02% | +1,078,666+769.9% | Added |
| Telemark Asset Management, LLC | 1,000,000 | $3.42M | 0.32% | 00.0% | Unchanged |
| Royce & Associates LP | 986,513 | $3.37M | 0.03% | +986,513 | New |
| Goldman Sachs Group Inc | 899,513 | $3.08M | 0.00% | −395,415−30.5% | Reduced |
| JPMorgan Chase & Co | 965,492 | $3.06M | 0.00% | −518,253−34.9% | Reduced |
| HRT Financial LP | 870,435 | $2.98M | 0.01% | +870,435 | New |
| D. E. Shaw & Co., Inc. | 833,572 | $2.85M | 0.00% | +810,355+3,490.4% | Added |
| Vanguard Portfolio Management LLC | 716,732 | $2.45M | 0.00% | +716,732 | New |
| BNP Paribas Arbitrage, SA | 697,932 | $2.39M | 0.00% | +6,662+1.0% | Added |
| Samjo Management, LLC | 645,625 | $2.21M | 0.95% | −152,900−19.1% | Reduced |
| Citadel Advisors LLC | 581,187 | $1.99M | 0.00% | −285,031−32.9% | Reduced |
| Charles Schwab Investment Management Inc | 556,725 | $1.90M | 0.00% | +16,402+3.0% | Added |
| AQR Capital Management LLC | 526,119 | $1.80M | 0.00% | +156,170+42.2% | Added |
| Northern Trust Corp | 523,422 | $1.79M | 0.00% | −15,746−2.9% | Reduced |
| Vanguard Fiduciary Trust Co | 454,402 | $1.55M | 0.00% | +454,402 | New |
| Federated Hermes, Inc. | 450,036 | $1.54M | 0.00% | −114,450−20.3% | Reduced |
| Palogic Value Management, L.P. | 450,000 | $1.54M | 0.67% | −75,000−14.3% | Reduced |
| Two Sigma Investments, LP | 441,436 | $1.51M | 0.00% | −315,983−41.7% | Reduced |
| Deutsche Bank AG | 359,535 | $1.23M | 0.00% | +136,442+61.2% | Added |
| Algert Global LLC | 326,410 | $1.12M | 0.02% | +270,575+484.6% | Added |
| Susquehanna International Group, LLP | 274,317 | $938.2K | 0.00% | +83,113+43.5% | Added |
| Point72 Asset Management, L.P. | 256,614 | $877.6K | 0.00% | +256,614 | New |
| Bank of America Corp | 241,020 | $824.3K | 0.00% | −511,410−68.0% | Reduced |
| Citigroup Inc | 233,665 | $799.1K | 0.00% | −4,966−2.1% | Reduced |
| XTX Topco Ltd | 201,367 | $688.7K | 0.01% | −663−0.3% | Reduced |
| UBS Group AG | 189,229 | $647.2K | 0.00% | −126,119−40.0% | Reduced |
| Morgan Stanley | 188,306 | $644.0K | 0.00% | −159,342−45.8% | Reduced |
| Jane Street Group, LLC | 187,860 | $642.5K | 0.00% | −105,290−35.9% | Reduced |
| Bank of New York Mellon Corp | 185,673 | $635.0K | 0.00% | −11,230−5.7% | Reduced |
| First Trust Advisors LP | 181,234 | $619.8K | 0.00% | −15,332−7.8% | Reduced |
| Ironwood Investment Management LLC | 166,646 | $569.9K | 0.24% | +39,186+30.7% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 157,400 | $538.3K | 0.00% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 151,093 | $516.7K | 0.00% | +71,922+90.8% | Added |
| CWM Advisors, LLC | 151,004 | $516.4K | 0.03% | −15,870−9.5% | Reduced |
| Balyasny Asset Management LLC | 149,373 | $510.9K | 0.00% | +149,373 | New |
| Engineers Gate Manager LP | 148,159 | $506.7K | 0.01% | +28,932+24.3% | Added |
| EntryPoint Capital, LLC | 146,673 | $501.6K | 0.15% | +36,531+33.2% | Added |
| Man Group plc | 143,322 | $490.2K | 0.00% | +143,322 | New |
| Lazard Asset Management LLC | 141,745 | $484.8K | 0.00% | +141,745 | New |
| Nuveen, LLC | 134,667 | $460.6K | 0.00% | +800+0.6% | Added |
| Mitsubishi UFJ Kokusai Asset Management Co., Ltd. | 127,480 | $436.0K | 0.00% | −3,988−3.0% | Reduced |
| Firsthand Capital Management, Inc. | 125,000 | $427.5K | 0.91% | 00.0% | Unchanged |
| Alps Advisors Inc | 124,353 | $425.3K | 0.00% | +7,981+6.9% | Added |
| Dynamic Technology Lab Private Ltd | 121,694 | $416.2K | 0.07% | +18,413+17.8% | Added |
| Sargent Investment Group, LLC | 116,457 | $398.3K | 0.05% | −25,150−17.8% | Reduced |
| Russell Investments Group, Ltd. | 114,386 | $391.2K | 0.00% | +18,735+19.6% | Added |
| Price T Rowe Associates Inc | 107,300 | $367.0K | 0.00% | +9,001+9.2% | Added |
| HSBC Holdings PLC | 104,982 | $359.1K | 0.00% | +81,656+350.1% | Added |
| State of Wisconsin Investment Board | 102,676 | $351.2K | 0.00% | −17,562−14.6% | Reduced |
| RBF Capital, LLC | 100,000 | $342.0K | 0.02% | 00.0% | Unchanged |
| Numerai GP LLC | 95,900 | $328.0K | 0.03% | −155,988−61.9% | Reduced |
| Rhumbline Advisers | 83,999 | $287.3K | 0.00% | −5,319−6.0% | Reduced |
| Oppenheimer & Co Inc | 76,284 | $260.9K | 0.00% | −737−1.0% | Reduced |
| Bridgeway Capital Management, LLC | 75,000 | $256.5K | 0.01% | +75,000 | New |
| WJ Financial Advisors LLC | 63,945 | $218.7K | 0.18% | −870−1.3% | Reduced |
| Franklin Resources Inc | 63,037 | $215.6K | 0.00% | +63,037 | New |
| Public Employees Retirement System of Ohio | 62,700 | $214.4K | 0.00% | +62,700 | New |
| Squarepoint Ops LLC | 59,752 | $204.4K | 0.00% | +59,752 | New |
| Alliancebernstein L.P. | 64,090 | $181.4K | 0.00% | 00.0% | Unchanged |
| Graham Capital Management, L.P. | 52,427 | $179.3K | 0.01% | −106,412−67.0% | Reduced |
| Odyssean, LLC | 41,759 | $142.8K | 0.05% | 00.0% | Unchanged |
| nVerses Capital, LLC | 40,546 | $138.7K | 0.13% | +40,546 | New |
| LPL Financial LLC | 38,849 | $132.9K | 0.00% | −16,227−29.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 31,547 | $107.9K | 0.00% | +748+2.4% | Added |
| Concurrent Investment Advisors, LLC | 30,050 | $102.8K | 0.00% | +50+0.2% | Added |
| Wells Fargo & Company | 28,583 | $97.8K | 0.00% | −53,587−65.2% | Reduced |
| Vanguard Global Advisers, LLC | 28,581 | $97.7K | 0.00% | +28,581 | New |
| Panagora Asset Management Inc | 27,903 | $95.4K | 0.00% | +27,903 | New |
| Axq Capital, LP | 26,624 | $91.1K | 0.01% | +26,624 | New |
| CWM, LLC | 24,626 | $84.2K | 0.00% | +22,862+1,296.0% | Added |
| Canada Pension Plan Investment Board | 23,800 | $81.4K | 0.00% | +11,900+100.0% | Added |
| IMC-Chicago, LLC | 22,470 | $76.8K | 0.00% | −80,460−78.2% | Reduced |
| Advisor Group Holdings, Inc. | 19,609 | $67.1K | 0.00% | +8,810+81.6% | Added |
| Intech Investment Management LLC | 18,580 | $63.5K | 0.00% | −6,802−26.8% | Reduced |
| Barclays PLC | 18,447 | $63.1K | 0.00% | −91,081−83.2% | Reduced |
| Manufacturers Life Insurance Company, The | 18,298 | $62.6K | 0.00% | −2,865−13.5% | Reduced |
| RSM US Wealth Management LLC | 17,250 | $59.0K | 0.00% | +422+2.5% | Added |
| Police & Firemen's Retirement System of New Jersey | 16,663 | $57.0K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 16,231 | $55.5K | 0.00% | 00.0% | Unchanged |
| Legato Capital Management LLC | 15,562 | $53.2K | 0.00% | 00.0% | Unchanged |
| Bank of Montreal | 15,403 | $52.7K | 0.00% | +15,403 | New |
| MetLife Investment Management | 15,118 | $51.7K | 0.00% | −12,036−44.3% | Reduced |
| State Board of Administration of Florida Retirement System | 14,618 | $50.0K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 11,026 | $40.7K | 0.00% | +11,026 | New |