Aspen AerogelsASPN
13F holders, Q3 2025 (September 30)204holders +22
51new positions
27sold out
7famous investors
$6.96avg. 13F price*
At the end of Q3 2025, 204 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, up 22 from Q2 2025. 51 opened new positions and 27 sold out. The largest holders were Kim, LLC ($85.5M), BlackRock, Inc. ($34.6M) and Vanguard Group Inc. ($31.4M). 7 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Aspen Aerogels Inc.
- CUSIP
- 04523Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 51 | $20.9M |
| Exits | 27 | $12.3M |
All 13F filers, Q2 2025 → Q3 2025: 8,172,436 shares bought and 8,196,787 shares sold, net −24,351 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 204 holders
| Kim, LLC | 16.36% | No change | 12,280,426 | $85.5M |
| BlackRock, Inc. | 0.00% | Add +0.0% | 4,977,558 | $34.6M |
| Vanguard Group Inc. | 0.00% | Add +0.5% | 4,510,370 | $31.4M |
| Oaktop Capital Management Ii, L.P. | 2.77% | No change | 4,394,525 | $30.6M |
| Needham Investment Management LLC | 1.67% | Add +14.1% | 3,439,700 | $23.9M |
| George Kaiser Family Foundation | 3.09% | No change | 3,167,322 | $22.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -8.1% | 2,252,013 | $15.7M |
| State Street Corp. | 0.00% | Add +1.2% | 1,944,636 | $13.5M |
| Telemark Asset Management, LLC | 1.18% | No change | 1,792,424 | $12.5M |
| Gagnon Securities LLC | 2.45% | Reduce -7.6% | 1,754,833 | $12.2M |
| Geode Capital Management, LLC | 0.00% | Add +0.1% | 1,584,871 | $11.0M |
| AWM Investment Company, Inc. | 1.02% | Add +8.4% | 1,555,477 | $10.8M |
| Millennium Management | 0.01% | Add +59.6% | 1,447,517 | $10.1M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -35.5% | 1,419,804 | $9.9M |
| Rice Hall James & Associates, LLC | 0.53% | Reduce -8.8% | 1,407,726 | $9.8M |
| JPMorgan Chase & Co. | 0.00% | Add +8.3% | 1,349,749 | $9.4M |
| Invesco Ltd. | 0.00% | Add +46.9% | 1,222,376 | $8.5M |
| Citadel Advisors | 0.01% | Add +583.7% | 1,114,590 | $7.8M |
| Penn Capital Management Company, LLC | 0.56% | Add +39.0% | 1,036,995 | $7.2M |
| Bank of America Corp. | 0.00% | Reduce -0.4% | 814,849 | $5.7M |
| Two Sigma Investments, LP | 0.01% | Add +5.2% | 811,528 | $5.6M |
| New York State Common Retirement Fund | 0.01% | Add +45.6% | 720,024 | $5.0M |
| Morgan Stanley | 0.00% | Reduce -1.6% | 694,488 | $4.8M |
| BNP Paribas Financial Markets | 0.00% | Add +68.4% | 692,148 | $4.8M |
| Northern Trust Corp. | 0.00% | Add +1.6% | 613,598 | $4.3M |
| Peregrine Investment Management Inc. | 2.05% | New | 600,000 | $4.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +4.9% | 572,588 | $4.0M |
| Gagnon Advisors, LLC | 2.43% | No change | 565,570 | $3.9M |
| Jump Financial, LLC | 0.05% | Add +362.5% | 538,300 | $3.7M |
| First Eagle Investment Management, LLC | 0.01% | New | 517,323 | $3.6M |
| Tudor Investment Corporation | 0.02% | New | 486,596 | $3.4M |
| American Century Companies Inc. | 0.00% | Add +3032.9% | 471,312 | $3.3M |
| UBS Group AG | 0.00% | Add +45.4% | 396,809 | $2.8M |
| Essex Investment Management Co. LLC | 0.42% | Reduce -8.6% | 390,033 | $2.7M |
| Royal Bank of Canada | 0.00% | Add +2.3% | 387,034 | $2.7M |
| Baird Financial Group, Inc. | 0.00% | Reduce -8.8% | 364,423 | $2.5M |
| Samjo Management, LLC | 0.91% | Reduce -0.8% | 340,825 | $2.4M |
| Marshall Wace, LLP | 0.00% | Reduce -22.7% | 312,190 | $2.2M |
| Federated Hermes, Inc. | 0.00% | Reduce -83.6% | 289,931 | $2.0M |
| Trexquant Investment LP | 0.02% | Reduce -59.9% | 260,157 | $1.8M |
| State of Wisconsin Investment Board | 0.00% | Reduce -9.1% | 256,790 | $1.8M |
| Renaissance Technologies | 0.00% | Reduce -63.6% | 246,900 | $1.7M |
| Deutsche Bank AG | 0.00% | Add +2.4% | 220,213 | $1.5M |
| Bank of New York Mellon Corp | 0.00% | Add +6.9% | 214,948 | $1.5M |
| Citigroup Inc. | 0.00% | Reduce -30.5% | 210,545 | $1.5M |
| Palogic Value Management, L.P. | 0.60% | Reduce -67.2% | 200,000 | $1.4M |
| First Trust Advisors LP | 0.00% | Reduce -4.7% | 195,968 | $1.4M |
| Sargent Investment Group, LLC | 0.19% | Reduce -8.0% | 189,227 | $1.3M |
| Point72 Asset Management | 0.00% | New | 184,300 | $1.3M |
| AQR Capital Management | 0.00% | Reduce -6.3% | 177,805 | $1.2M |
| Cubist Systematic Strategies, LLC | 0.02% | Add +83.8% | 176,010 | $1.2M |
| Susquehanna International Group, LLP | 0.00% | Reduce -39.5% | 168,847 | $1.2M |
| HRT Financial LP | 0.00% | Reduce -71.9% | 167,423 | $1.2M |
| CastleKnight Management LP | 0.06% | Reduce -54.3% | 162,599 | $1.1M |
| Jane Street Group, LLC | 0.00% | Add +89.8% | 161,125 | $1.1M |
| Quantbot Technologies LP | 0.03% | New | 158,583 | $1.1M |
| Los Angeles Capital Management LLC | 0.00% | New | 139,213 | $969K |
| Voleon Capital Management LP | 0.02% | Reduce -44.3% | 138,538 | $964K |
| Swiss National Bank | 0.00% | No change | 135,200 | $941K |
| Ironwood Investment Management LLC | 0.41% | Add +8.1% | 134,362 | $935K |
| Russell Investments Group, Ltd. | 0.00% | Add +74.5% | 134,247 | $934K |
| Nuveen, LLC | 0.00% | No change | 133,867 | $932K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -50.6% | 126,275 | $879K |
| Firsthand Capital Management, Inc. | 1.46% | No change | 125,000 | $870K |
| Alps Advisors Inc. | 0.00% | Reduce -11.1% | 123,677 | $861K |
| Oppenheimer & Co. Inc. | 0.01% | Add +515.9% | 121,826 | $848K |
| ExodusPoint Capital Management, LP | 0.01% | New | 116,422 | $810K |
| LPL Financial LLC | 0.00% | Add +153.2% | 110,857 | $772K |
| Rhumbline Advisers | 0.00% | Reduce -2.4% | 110,732 | $771K |
| Graham Capital Management, L.P. | 0.04% | Add +738.8% | 105,880 | $737K |
| Two Sigma Advisers, LP | 0.00% | Add +161.9% | 104,500 | $727K |
| IMC-Chicago, LLC | 0.01% | Add +18.4% | 103,197 | $718K |
| Barclays PLC | 0.00% | Reduce -23.5% | 99,365 | $692K |
| Algert Global LLC | 0.01% | Reduce -50.3% | 94,655 | $659K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -48.4% | 94,589 | $658K |
| Legato Capital Management LLC | 0.07% | Add +0.2% | 93,806 | $653K |
| Squarepoint Ops LLC | 0.00% | Add +33.3% | 90,850 | $632K |
| Atom Investors LP | 0.04% | New | 82,648 | $575K |
| SG Americas Securities, LLC | 0.00% | Reduce -39.9% | 80,423 | $560K |
| Man Group plc | 0.00% | New | 80,197 | $558K |
| T. Rowe Price Associates Inc. | 0.00% | Add +8.1% | 76,626 | $534K |
| Counterpoint Mutual Funds LLC | 0.04% | New | 71,595 | $498K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -11.4% | 70,177 | $488K |
| Harbour Capital Advisors, LLC | 0.10% | New | 58,675 | $473K |
| Legal & General Group Plc | 0.00% | No change | 67,130 | $467K |
| Inspire Investing, LLC | 0.04% | New | 66,115 | $460K |
| Verition Fund Management LLC | 0.00% | Reduce -30.7% | 65,962 | $459K |
| EntryPoint Capital, LLC | 0.18% | Reduce -38.4% | 65,173 | $454K |
| Alliancebernstein L.P. | 0.00% | Reduce -26.4% | 64,090 | $446K |
| California State Teachers Retirement System | 0.00% | Add +7.3% | 60,670 | $422K |
| ARS Investment Partners, LLC | 0.03% | Add +6.2% | 60,007 | $418K |
| Brevan Howard Capital Management LP | 0.01% | New | 55,400 | $386K |
| Wells Fargo & Company | 0.00% | Add +4.7% | 53,769 | $374K |
| Wolverine Trading, LLC | 0.01% | New | 49,356 | $349K |
| Capital Fund Management S.A. | 0.00% | Reduce -29.0% | 49,750 | $346K |
| Perigon Wealth Management, LLC | 0.01% | Add +30.3% | 49,321 | $343K |
| Franklin Resources Inc. | 0.00% | Add +15.7% | 46,754 | $325K |
| Intech Investment Management LLC | 0.00% | Add +16.1% | 44,964 | $313K |
| Connors Investor Services Inc. | 0.02% | Add +14.2% | 40,167 | $280K |
| Sanders Morris Harris LLC | 0.04% | No change | 40,000 | $278K |
| Versor Investments LP | 0.05% | New | 39,300 | $274K |
| Fox Run Management, L.L.C. | 0.04% | New | 36,181 | $252K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Reduce -51.5% | 35,123 | $244K |
| Raymond James Financial Inc. | 0.00% | Add +31.0% | 34,787 | $242K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -12.5% | 31,159 | $217K |
| Janus Henderson Group PLC | 0.00% | No change | 30,455 | $212K |
| MetLife Investment Management, LLC | 0.00% | Reduce -31.7% | 30,443 | $212K |
| Caption Management, LLC | 0.01% | Reduce -31.4% | 30,000 | $209K |
| Quantinno Capital Management LP | 0.00% | Add +29.7% | 23,269 | $162K |
| Entropy Technologies, LP | 0.01% | New | 23,221 | $162K |
| XTX Topco Ltd | 0.01% | New | 22,799 | $159K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -7.9% | 22,718 | $158K |
| Creative Planning | 0.00% | Add +43.2% | 21,948 | $153K |
| Sender Co & Partners, Inc. | 0.06% | New | 21,588 | $150K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Add +63.5% | 21,109 | $147K |
| Janney Montgomery Scott LLC | 0.00% | Reduce -74.0% | 21,043 | $146K |
| Arizona State Retirement System | 0.00% | Add +1.5% | 20,668 | $144K |
| DGS Capital Management, LLC | 0.03% | New | 20,153 | $140K |
| Numerai GP LLC | 0.02% | New | 18,280 | $127K |
| AlphaQuest LLC | 0.01% | No change | 18,154 | $126K |
| HUB Investment Partners, LLC | 0.00% | New | 16,940 | $118K |
| Simplex Trading, LLC | 0.00% | Add +1443.3% | 16,251 | $113K |
| Compound Planning, Inc. | 0.00% | New | 15,003 | $104K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 14,618 | $102K |
| Woodmont Investment Counsel LLC | 0.01% | Reduce -42.7% | 14,603 | $102K |
| Penbrook Management LLC | 0.07% | No change | 14,180 | $99K |
| KLP Kapitalforvaltning As | 0.00% | No change | 13,800 | $96K |
| Osaic Holdings, Inc. | 0.00% | Add +27.4% | 13,527 | $95K |
| Caxton Associates LLP | 0.00% | Reduce -86.8% | 13,654 | $95K |
| D. E. Shaw & Co. | 0.00% | Reduce -36.2% | 13,222 | $92K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.01% | New | 12,546 | $87K |
| Voya Investment Management LLC | 0.00% | Reduce -32.8% | 12,359 | $86K |
| IFP Advisors, Inc | 0.00% | Reduce -42.0% | 12,032 | $84K |
| Probity Advisors, Inc. | 0.01% | Add +11.9% | 11,938 | $83K |
| Commonwealth Equity Services, LLC | 0.00% | New | 11,352 | $79K |
| ProShare Advisors LLC | 0.00% | Reduce -16.6% | 11,338 | $79K |
| HighTower Advisors, LLC | 0.00% | New | 10,847 | $75K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 10,703 | $74K |
| Occudo Quantitative Strategies LP | 0.01% | New | 10,398 | $72K |
| Arax Advisory Partners | 0.00% | Add +499.2% | 10,324 | $72K |
| OMERS ADMINISTRATION Corp | 0.00% | New | 10,300 | $72K |
| Quadrature Capital Ltd | 0.00% | New | 10,210 | $71K |
| Olympiad Research LP | 0.10% | New | 10,109 | $70K |
| Prelude Capital Management, LLC | 0.01% | New | 10,109 | $70K |
| Choate Investment Advisors | 0.00% | No change | 10,000 | $70K |
| Cannell & Spears LLC | 0.00% | No change | 10,000 | $70K |
| Banque Cantonale Vaudoise | 0.00% | Add +39.3% | 9,349 | $65K |
| Cwm, LLC | 0.00% | Reduce -9.9% | 7,497 | $52K |
| SBI Securities Co., Ltd. | 0.00% | Add +10.0% | 6,975 | $49K |
| FMR LLC | 0.00% | Reduce -96.1% | 6,663 | $46K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 6,088 | $42K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 5,708 | $40K |
| Nisa Investment Advisors, LLC | 0.00% | Add +1.6% | 4,866 | $34K |
| Sterling Capital Management LLC | 0.00% | Add +155.6% | 4,575 | $32K |
| First PREMIER Bank | 0.01% | No change | 4,000 | $28K |
| Point72 (DIFC) Ltd | 0.00% | New | 3,938 | $27K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -46.6% | 3,865 | $27K |
| US Bancorp \de | 0.00% | Add +15.5% | 3,338 | $23K |
| FNY Investment Advisers, LLC | 0.01% | New | 3,412 | $23K |
| State of Alaska, Department of Revenue | 0.00% | New | 3,385 | $23K |
| Stance Capital LLC | 0.01% | New | 2,733 | $19K |
| MAI Capital Management | 0.00% | Add +60.6% | 2,651 | $18K |
| Jones Financial Companies LLLP | 0.00% | Add +34.3% | 2,545 | $18K |
| Amalgamated Bank | 0.00% | No change | 2,130 | $15K |
| Bokf, NA | 0.00% | No change | 2,000 | $14K |
| Point72 Europe (London) LLP | 0.00% | New | 1,573 | $11K |
| GAMMA Investing LLC | 0.00% | Add +35.7% | 1,489 | $10K |
| Wealthspire Advisors, LLC | 0.00% | New | 1,355 | $9K |
| Signaturefd, LLC | 0.00% | Add +38.1% | 1,337 | $9K |
| Versant Capital Management, Inc | 0.00% | No change | 1,322 | $9K |
| Quarry LP | 0.00% | New | 1,149 | $8K |
| GGM Financial LLC | 0.00% | New | 1,010 | $7K |
| Summit Securities Group LLC | 0.00% | Reduce -82.9% | 975 | $7K |
| Allworth Financial LP | 0.00% | Add +4.3% | 849 | $6K |
| Optiver Holding B.V. | 0.00% | New | 848 | $6K |
| Huntington National Bank | 0.00% | No change | 735 | $5K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | No change | 777 | $5K |
| Morse Asset Management, Inc | 0.00% | Reduce -57.1% | 675 | $5K |
| EverSource Wealth Advisors, LLC | 0.00% | No change | 641 | $4K |
| Strategic Wealth Partners, Ltd. | 0.00% | Reduce -74.7% | 594 | $4K |
| National Bank of Canada | 0.00% | New | 527 | $4K |
| Stephens Consulting, LLC | 0.00% | New | 486 | $3K |
| Bogart Wealth, LLC | 0.00% | New | 375 | $3K |
| Larson Financial Group LLC | 0.00% | Reduce -83.4% | 375 | $3K |
| Minot DeBlois Advisors LLC | 0.00% | No change | 300 | $2K |
| HighMark Wealth Management LLC | 0.00% | No change | 250 | $2K |
| Essential Partners LLC | 0.00% | Reduce -67.2% | 210 | $1K |
| Rothschild Investment LLC | 0.00% | Add +10.8% | 205 | $1K |
| Rockefeller Capital Management L.P. | 0.00% | New | 200 | $1K |
| Kilter Group LLC | 0.00% | New | 180 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | Add +25.6% | 157 | $1K |
| TD Private Client Wealth LLC | 0.00% | New | 98 | $682 |
| Comerica Bank | 0.00% | No change | 93 | $644 |
| Blue Trust, Inc. | 0.00% | New | 88 | $612 |
| Smartleaf Asset Management LLC | 0.00% | New | 85 | $601 |
| Cornerstone Planning Group LLC | 0.00% | New | 75 | $565 |
| Parkside Financial Bank & Trust | 0.00% | No change | 80 | $557 |
| Colonial Trust Advisors | 0.00% | No change | 50 | $348 |
| Hughes Financial Services, LLC | 0.00% | New | 72 | $264 |
| Asset Planning,Inc | 0.00% | No change | 25 | $174 |
| Advisory Services Network, LLC | 0.00% | New | 25 | $174 |
| Clearstead Advisors, LLC | 0.00% | Add +66.7% | 20 | $140 |
| Farther Finance Advisors, LLC | 0.00% | No change | 1 | $7 |
| Covestor Ltd | 0.00% | No change | 14 | $0 |
"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.