Aspen AerogelsASPN
13F holders, Q2 2025 (June 30)182holders −39
24new positions
65sold out
6famous investors
$5.93avg. 13F price*
At the end of Q2 2025, 182 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, down 39 from Q1 2025. 24 opened new positions and 65 sold out. The largest holders were Kim, LLC ($72.7M), BlackRock, Inc. ($29.5M) and Vanguard Group Inc. ($26.6M). 6 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Aspen Aerogels Inc.
- CUSIP
- 04523Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 24 | $28.9M |
| Exits | 65 | $27.8M |
All 13F filers, Q1 2025 → Q2 2025: 12,234,583 shares bought and 12,114,999 shares sold, net +119,584 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 182 holders
| Kim, LLC | 13.54% | No change | 12,280,426 | $72.7M |
| BlackRock, Inc. | 0.00% | Add +0.3% | 4,977,186 | $29.5M |
| Vanguard Group Inc. | 0.00% | Add +2.6% | 4,487,684 | $26.6M |
| Oaktop Capital Management Ii, L.P. | 2.80% | No change | 4,394,525 | $26.0M |
| George Kaiser Family Foundation | 2.70% | No change | 3,167,322 | $18.8M |
| Needham Investment Management LLC | 1.42% | Add +10.1% | 3,014,200 | $17.8M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -2.3% | 2,449,103 | $14.5M |
| Goldman Sachs Group Inc. | 0.00% | Add +72.8% | 2,201,900 | $13.0M |
| State Street Corp. | 0.00% | Add +28.6% | 1,920,997 | $11.4M |
| Gagnon Securities LLC | 2.28% | New | 1,899,108 | $11.2M |
| Telemark Asset Management, LLC | 1.13% | Reduce -5.3% | 1,792,424 | $10.6M |
| Federated Hermes, Inc. | 0.02% | New | 1,766,733 | $10.5M |
| Geode Capital Management, LLC | 0.00% | Add +4.4% | 1,582,742 | $9.4M |
| Rice Hall James & Associates, LLC | 0.49% | Add +86.3% | 1,544,415 | $9.1M |
| AWM Investment Company, Inc. | 0.95% | Reduce -41.4% | 1,435,477 | $8.5M |
| JPMorgan Chase & Co. | 0.00% | Add +105.4% | 1,246,506 | $7.4M |
| Millennium Management | 0.01% | Reduce -43.3% | 906,745 | $5.4M |
| Invesco Ltd. | 0.00% | Add +1045.5% | 831,991 | $4.9M |
| Bank of America Corp. | 0.00% | Add +124.2% | 818,212 | $4.8M |
| Two Sigma Investments, LP | 0.01% | Reduce -14.4% | 771,307 | $4.6M |
| Penn Capital Management Company, LLC | 0.38% | Add +16.2% | 745,877 | $4.4M |
| Morgan Stanley | 0.00% | Reduce -10.7% | 705,999 | $4.2M |
| Renaissance Technologies | 0.01% | Reduce -11.1% | 679,200 | $4.0M |
| Trexquant Investment LP | 0.04% | Reduce -24.6% | 649,038 | $3.8M |
| Palogic Value Management, L.P. | 1.55% | Add +43.5% | 610,000 | $3.6M |
| Northern Trust Corp. | 0.00% | Reduce -0.1% | 603,660 | $3.6M |
| HRT Financial LP | 0.02% | Add +668.7% | 595,742 | $3.5M |
| Gagnon Advisors, LLC | 2.25% | New | 565,570 | $3.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +11.9% | 545,843 | $3.2M |
| Royce & Associates LP | 0.03% | Reduce -24.8% | 531,068 | $3.1M |
| Frontier Capital Management Co. LLC | 0.03% | Reduce -0.3% | 508,651 | $3.0M |
| New York State Common Retirement Fund | 0.00% | Add +13.0% | 494,462 | $2.9M |
| Essex Investment Management Co. LLC | 0.46% | Add +83.3% | 426,528 | $2.5M |
| BNP Paribas Financial Markets | 0.00% | Add +5.7% | 411,066 | $2.4M |
| Marshall Wace, LLP | 0.00% | Add +32.1% | 404,006 | $2.4M |
| Baird Financial Group, Inc. | 0.00% | Reduce -10.0% | 399,740 | $2.4M |
| Royal Bank of Canada | 0.00% | Add +570.9% | 378,516 | $2.2M |
| CastleKnight Management LP | 0.14% | No change | 355,399 | $2.1M |
| Samjo Management, LLC | 0.86% | Reduce -57.8% | 343,625 | $2.0M |
| Citigroup Inc. | 0.00% | Add +297.3% | 302,817 | $1.8M |
| Sargent Investment Group, LLC | 0.23% | Reduce -25.0% | 205,697 | $1.7M |
| State of Wisconsin Investment Board | 0.00% | Add +32.5% | 282,623 | $1.7M |
| Susquehanna International Group, LLP | 0.00% | Add +31.0% | 278,987 | $1.7M |
| UBS Group AG | 0.00% | Reduce -35.1% | 272,829 | $1.6M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -40.4% | 255,594 | $1.5M |
| Voleon Capital Management LP | 0.08% | Add +464.8% | 248,839 | $1.5M |
| Deutsche Bank AG | 0.00% | Reduce -17.2% | 215,018 | $1.3M |
| First Trust Advisors LP | 0.00% | Reduce -23.8% | 205,563 | $1.2M |
| Bank of New York Mellon Corp | 0.00% | Add +6.6% | 200,990 | $1.2M |
| Algert Global LLC | 0.02% | Reduce -61.8% | 190,325 | $1.1M |
| AQR Capital Management | 0.00% | Add +26.4% | 189,831 | $1.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +32.4% | 183,309 | $1.1M |
| FMR LLC | 0.00% | Reduce -86.1% | 169,208 | $1.0M |
| Principal Financial Group Inc. | 0.00% | New | 166,868 | $988K |
| Citadel Advisors | 0.00% | Reduce -71.8% | 163,032 | $965K |
| Hartree Partners, LP | 0.25% | No change | 150,000 | $888K |
| LMR Partners LLP | 0.02% | No change | 141,785 | $839K |
| Alps Advisors Inc. | 0.00% | Add +10.2% | 139,162 | $824K |
| Swiss National Bank | 0.00% | No change | 135,200 | $800K |
| Nuveen, LLC | 0.00% | Reduce -21.0% | 133,867 | $792K |
| SG Americas Securities, LLC | 0.00% | Add +98.6% | 133,821 | $792K |
| Barclays PLC | 0.00% | Add +55.0% | 129,867 | $769K |
| Firsthand Capital Management, Inc. | 1.33% | No change | 125,000 | $740K |
| Ironwood Investment Management LLC | 0.36% | New | 124,324 | $736K |
| Jump Financial, LLC | 0.01% | New | 116,400 | $689K |
| Rhumbline Advisers | 0.00% | Add +24.8% | 113,506 | $672K |
| EntryPoint Capital, LLC | 0.31% | Add +63.2% | 105,779 | $626K |
| Caxton Associates LLP | 0.02% | Add +114.9% | 103,172 | $611K |
| Cubist Systematic Strategies, LLC | 0.01% | Reduce -33.6% | 95,758 | $567K |
| Verition Fund Management LLC | 0.00% | Add +270.1% | 95,131 | $563K |
| Legato Capital Management LLC | 0.07% | Add +132.4% | 93,615 | $554K |
| IMC-Chicago, LLC | 0.01% | Add +84.9% | 87,181 | $516K |
| Alliancebernstein L.P. | 0.00% | Add +67.0% | 87,040 | $515K |
| Jane Street Group, LLC | 0.00% | Add +499.6% | 84,880 | $502K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 81,684 | $484K |
| Janney Montgomery Scott LLC | 0.00% | Reduce -23.9% | 81,082 | $480K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Add +147.2% | 79,178 | $469K |
| Voloridge Investment Management, LLC | 0.00% | Reduce -14.6% | 78,851 | $467K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -35.9% | 76,950 | $456K |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Add +128.0% | 72,428 | $429K |
| T. Rowe Price Associates Inc. | 0.00% | Add +6.8% | 70,877 | $420K |
| Capital Fund Management S.A. | 0.00% | Reduce -81.6% | 70,048 | $415K |
| Squarepoint Ops LLC | 0.00% | Reduce -89.4% | 68,167 | $404K |
| Legal & General Group Plc | 0.00% | Add +3.6% | 67,130 | $397K |
| Envestnet Asset Management Inc. | 0.00% | Add +20.5% | 66,910 | $396K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -62.3% | 59,099 | $350K |
| California State Teachers Retirement System | 0.00% | Reduce -7.4% | 56,519 | $335K |
| ARS Investment Partners, LLC | 0.02% | Add +132.2% | 56,507 | $335K |
| Thrivent Financial for Lutherans | 0.00% | No change | 55,719 | $330K |
| Skylands Capital, LLC | 0.05% | No change | 54,800 | $324K |
| Wells Fargo & Company | 0.00% | Reduce -57.4% | 51,357 | $304K |
| MetLife Investment Management, LLC | 0.00% | Reduce -94.2% | 44,577 | $264K |
| LPL Financial LLC | 0.00% | Add +39.3% | 43,784 | $259K |
| Caption Management, LLC | 0.02% | New | 43,700 | $259K |
| Franklin Resources Inc. | 0.00% | Add +0.0% | 40,413 | $239K |
| Sanders Morris Harris LLC | 0.06% | No change | 40,000 | $237K |
| Two Sigma Advisers, LP | 0.00% | Reduce -38.8% | 39,900 | $236K |
| Intech Investment Management LLC | 0.00% | Add +0.1% | 38,723 | $229K |
| Perigon Wealth Management, LLC | 0.01% | Add +12.7% | 37,866 | $224K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -2.7% | 35,608 | $211K |
"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.