Aspen AerogelsASPN
13F holders, Q1 2025 (March 31)221holders −10
42new positions
51sold out
6famous investors
$6.42avg. 13F price*
At the end of Q1 2025, 221 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, down 10 from Q4 2024. 42 opened new positions and 51 sold out. The largest holders were Kim, LLC ($78.5M), BlackRock, Inc. ($31.7M) and Oaktop Capital Management Ii, L.P. ($28.1M). 6 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 Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Aspen Aerogels Inc.
- CUSIP
- 04523Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $13.2M |
| Exits | 51 | $84.7M |
All 13F filers, Q4 2024 → Q1 2025: 11,116,767 shares bought and 12,007,034 shares sold, net −890,267 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 221 holders
| Kim, LLC | 21.71% | No change | 12,280,426 | $78.5M |
| BlackRock, Inc. | 0.00% | Reduce -0.8% | 4,960,172 | $31.7M |
| Oaktop Capital Management Ii, L.P. | 3.74% | Add +17.5% | 4,394,525 | $28.1M |
| Vanguard Group Inc. | 0.00% | Add +0.3% | 4,373,159 | $27.9M |
| George Kaiser Family Foundation | 2.97% | No change | 3,167,322 | $20.2M |
| Needham Investment Management LLC | 1.64% | Add +14.5% | 2,737,200 | $17.5M |
| Dimensional Fund Advisors LP | 0.00% | Add +24.2% | 2,507,584 | $16.0M |
| AWM Investment Company, Inc. | 2.16% | Add +102.6% | 2,449,221 | $15.7M |
| Telemark Asset Management, LLC | 1.58% | No change | 1,892,424 | $12.1M |
| Millennium Management | 0.01% | Reduce -1.4% | 1,599,392 | $10.2M |
| Geode Capital Management, LLC | 0.00% | Add +3.5% | 1,515,775 | $9.7M |
| State Street Corp. | 0.00% | Add +0.5% | 1,494,237 | $9.5M |
| Goldman Sachs Group Inc. | 0.00% | Add +89.7% | 1,274,356 | $8.1M |
| FMR LLC | 0.00% | Reduce -0.7% | 1,217,140 | $7.8M |
| Two Sigma Investments, LP | 0.01% | Add +52.1% | 901,484 | $5.8M |
| Trexquant Investment LP | 0.06% | Add +114.7% | 860,246 | $5.5M |
| Rice Hall James & Associates, LLC | 0.31% | Add +49.5% | 828,789 | $5.3M |
| Samjo Management, LLC | 2.20% | Reduce -7.0% | 813,600 | $5.2M |
| Morgan Stanley | 0.00% | Add +1.9% | 790,110 | $5.0M |
| MetLife Investment Management, LLC | 0.03% | Add +2036.3% | 764,423 | $4.9M |
| Renaissance Technologies | 0.01% | Reduce -0.3% | 764,100 | $4.9M |
| Royce & Associates LP | 0.05% | Reduce -25.4% | 706,278 | $4.5M |
| Dendur Capital LP | 0.50% | Reduce -16.9% | 644,045 | $4.1M |
| Squarepoint Ops LLC | 0.01% | Add +59.7% | 642,803 | $4.1M |
| Penn Capital Management Company, LLC | 0.40% | New | 642,094 | $4.1M |
| JPMorgan Chase & Co. | 0.00% | Add +474.6% | 606,753 | $3.9M |
| Northern Trust Corp. | 0.00% | Reduce -5.8% | 604,194 | $3.9M |
| Citadel Advisors | 0.00% | Reduce -7.4% | 577,760 | $3.7M |
| Ameriprise Financial Inc. | 0.00% | Add +4.5% | 548,110 | $3.5M |
| Frontier Capital Management Co. LLC | 0.04% | Reduce -3.0% | 510,136 | $3.3M |
| Algert Global LLC | 0.08% | Add +13.2% | 498,738 | $3.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -11.3% | 487,731 | $3.1M |
| Baird Financial Group, Inc. | 0.01% | Add +10.8% | 444,280 | $2.8M |
| New York State Common Retirement Fund | 0.00% | Add +2073.6% | 437,572 | $2.8M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -45.3% | 428,584 | $2.7M |
| Palogic Value Management, L.P. | 1.22% | Add +226.9% | 425,000 | $2.7M |
| UBS Group AG | 0.00% | Reduce -3.5% | 420,388 | $2.7M |
| Sora Investors LLC | 0.32% | Reduce -15.2% | 413,078 | $2.6M |
| Tudor Investment Corporation | 0.02% | Add +295.8% | 401,667 | $2.6M |
| Bouvel Investment Partners, LLC | 0.95% | Add +41.4% | 90,992 | $2.5M |
| BNP Paribas Financial Markets | 0.00% | Add +186.9% | 388,956 | $2.5M |
| Capital Fund Management S.A. | 0.03% | Add +151.1% | 380,149 | $2.4M |
| Bank of America Corp. | 0.00% | Add +204.5% | 364,991 | $2.3M |
| CastleKnight Management LP | 0.25% | Reduce -20.2% | 355,399 | $2.3M |
| Marshall Wace, LLP | 0.00% | Add +1146.8% | 305,835 | $2.0M |
| Allspring Global Investments Holdings, LLC | 0.00% | Add +96.3% | 299,311 | $1.9M |
| Sargent Investment Group, LLC | 0.28% | Reduce -26.1% | 274,267 | $1.8M |
| First Trust Advisors LP | 0.00% | Reduce -45.2% | 269,739 | $1.7M |
| Deutsche Bank AG | 0.00% | Reduce -37.5% | 259,553 | $1.7M |
| Essex Investment Management Co. LLC | 0.31% | Reduce -6.3% | 232,740 | $1.5M |
| State of Wisconsin Investment Board | 0.00% | Reduce -25.0% | 213,269 | $1.4M |
| Susquehanna International Group, LLP | 0.00% | Add +27.3% | 212,904 | $1.4M |
| Oppenheimer & Co. Inc. | 0.02% | Add +11.9% | 203,160 | $1.3M |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.7% | 188,566 | $1.2M |
| Nuveen, LLC | 0.00% | — | 169,473 | $1.1M |
| Graham Capital Management, L.P. | 0.05% | Add +27.0% | 166,959 | $1.1M |
| Balyasny Asset Management L.P. | 0.00% | New | 156,748 | $1.0M |
| AQR Capital Management | 0.00% | New | 150,186 | $960K |
| Hartree Partners, LP | 0.35% | New | 150,000 | $959K |
| Redwood Grove Capital, LLC | 0.34% | No change | 147,705 | $944K |
| Cubist Systematic Strategies, LLC | 0.01% | Reduce -89.7% | 144,234 | $922K |
| LMR Partners LLP | 0.03% | No change | 141,785 | $906K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -76.5% | 138,422 | $885K |
| Swiss National Bank | 0.00% | Add +5.0% | 135,200 | $864K |
| Alps Advisors Inc. | 0.00% | Add +1.7% | 126,326 | $807K |
| Dynamic Technology Lab Private Ltd | 0.12% | Add +91.2% | 125,156 | $800K |
| Firsthand Capital Management, Inc. | 1.94% | Add +19.1% | 125,000 | $799K |
| ExodusPoint Capital Management, LP | 0.01% | New | 124,357 | $795K |
| Prescott Group Capital Management, L.L.C. | 0.11% | Reduce -71.5% | 122,796 | $785K |
| Wells Fargo & Company | 0.00% | Reduce -44.2% | 120,468 | $770K |
| Russell Investments Group, Ltd. | 0.00% | Add +375.9% | 120,094 | $767K |
| Bryce Point Capital, LLC | 0.56% | Reduce -19.2% | 97,059 | $749K |
| AMH Equity Ltd | 1.09% | New | 110,000 | $703K |
| Campbell & CO Investment Adviser LLC | 0.05% | Add +80.9% | 109,728 | $701K |
| Janney Montgomery Scott LLC | 0.00% | New | 106,613 | $681K |
| Voloridge Investment Management, LLC | 0.00% | Reduce -64.5% | 92,312 | $590K |
| Rhumbline Advisers | 0.00% | Reduce -2.2% | 90,965 | $581K |
| Barclays PLC | 0.00% | Reduce -22.3% | 83,774 | $535K |
| Maven Securities LTD | 0.11% | Add +168.1% | 80,421 | $514K |
| Qsemble Capital Management, LP | 0.05% | Add +77.5% | 78,133 | $499K |
| HRT Financial LP | 0.00% | Reduce -5.1% | 77,499 | $495K |
| Citigroup Inc. | 0.00% | Reduce -12.9% | 76,224 | $487K |
| Invesco Ltd. | 0.00% | Add +42.8% | 72,631 | $464K |
| Bridgewater Advisors Inc. | 0.04% | Add +0.1% | 82,399 | $445K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -51.1% | 67,827 | $433K |
| SG Americas Securities, LLC | 0.00% | New | 67,394 | $431K |
| T. Rowe Price Associates Inc. | 0.00% | Add +56.4% | 66,375 | $425K |
| Two Sigma Advisers, LP | 0.00% | Add +6.9% | 65,200 | $417K |
| EntryPoint Capital, LLC | 0.19% | Add +125.0% | 64,810 | $414K |
| Legal & General Group Plc | 0.00% | Add +2.0% | 64,806 | $414K |
| Promethium Advisors,llc | 0.26% | Add +35.1% | 63,320 | $405K |
| Cannell & Spears LLC | 0.01% | Reduce -0.7% | 62,505 | $399K |
| Centiva Capital, LP | 0.02% | New | 61,801 | $395K |
| California State Teachers Retirement System | 0.00% | No change | 61,045 | $390K |
| Olympiad Research LP | 0.44% | Add +143.9% | 58,545 | $374K |
| Nebula Research & Development LLC | 0.03% | Add +23.6% | 57,816 | $369K |
| Royal Bank of Canada | 0.00% | Add +84.7% | 56,419 | $360K |
| Thrivent Financial for Lutherans | 0.00% | New | 55,719 | $356K |
| Envestnet Asset Management Inc. | 0.00% | Add +17.4% | 55,511 | $355K |
| Skylands Capital, LLC | 0.05% | New | 54,800 | $350K |
"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.