Aspen AerogelsASPN
13F holders, Q2 2026 (June 30)179holders +13
37new positions
22sold out
7famous investors
$6.33avg. 13F price*
At the end of Q2 2026, 179 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, up 13 from Q1 2026. 37 opened new positions and 22 sold out. The largest holders were Kim, LLC ($77.9M), BlackRock, Inc. ($33.5M) and Oaktop Capital Management Ii, L.P. ($32.8M). 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 David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Aspen Aerogels Inc.
- CUSIP
- 04523Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 37 | $17.9M |
| Exits | 22 | $8.0M |
All 13F filers, Q1 2026 → Q2 2026: 10,977,100 shares bought and 6,834,218 shares sold, net +4,142,882 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 179 holders
| Kim, LLC | 23.83% | No change | 12,280,426 | $77.9M |
| BlackRock, Inc. | 0.00% | Add +11.3% | 5,277,148 | $33.5M |
| Oaktop Capital Management Ii, L.P. | 1.39% | No change | 5,168,674 | $32.8M |
| Vanguard Capital Management LLC | 0.00% | Add +3.0% | 3,539,271 | $22.4M |
| Needham Investment Management LLC | 0.62% | Reduce -27.8% | 3,260,800 | $20.7M |
| George Kaiser Family Foundation | 1.93% | No change | 3,167,322 | $20.1M |
| State Street Corp. | 0.00% | Add +10.3% | 2,559,495 | $16.2M |
| American Century Companies Inc. | 0.01% | Add +101.2% | 2,510,042 | $15.9M |
| Jacobs Levy Equity Management, Inc. | 0.05% | Add +68.9% | 2,058,083 | $13.0M |
| Ameriprise Financial Inc. | 0.00% | Add +20.9% | 1,821,295 | $11.5M |
| Geode Capital Management, LLC | 0.00% | Add +14.9% | 1,770,425 | $11.2M |
| Rice Hall James & Associates, LLC | 0.50% | Add +5.3% | 1,635,259 | $10.4M |
| Invesco Ltd. | 0.00% | Reduce -29.5% | 1,619,972 | $10.3M |
| Gagnon Securities LLC | 1.88% | Reduce -17.5% | 1,535,812 | $9.7M |
| Dimensional Fund Advisors LP | 0.00% | Add +15.2% | 1,447,333 | $9.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +52.6% | 1,372,300 | $8.7M |
| Royce & Associates LP | 0.07% | Add +34.1% | 1,323,218 | $8.4M |
| AQR Capital Management | 0.00% | Add +142.6% | 1,276,346 | $8.1M |
| Millennium Management | 0.01% | Reduce -15.2% | 1,190,616 | $7.5M |
| Marshall Wace, LLP | 0.01% | Reduce -9.2% | 1,146,707 | $7.3M |
| D. E. Shaw & Co. | 0.00% | Add +27.9% | 1,066,501 | $6.8M |
| Telemark Asset Management, LLC | 0.46% | No change | 1,000,000 | $6.3M |
| JPMorgan Chase & Co. | 0.00% | Add +4.0% | 1,004,383 | $6.0M |
| BNP Paribas Financial Markets | 0.00% | Add +24.3% | 867,199 | $5.5M |
| Two Sigma Investments, LP | 0.00% | Add +76.6% | 779,468 | $4.9M |
| Vanguard Portfolio Management LLC | 0.00% | Reduce -2.5% | 698,983 | $4.4M |
| Acadian Asset Management LLC | 0.01% | New | 684,915 | $4.3M |
| Federated Hermes, Inc. | 0.01% | Add +32.6% | 596,883 | $3.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.5% | 570,712 | $3.6M |
| Tudor Investment Corporation | 0.01% | Add +275.5% | 567,384 | $3.6M |
| Northern Trust Corp. | 0.00% | Add +8.1% | 565,569 | $3.6M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +4.4% | 474,393 | $3.0M |
| Panagora Asset Management Inc. | 0.01% | Add +1485.7% | 442,448 | $2.8M |
| Morgan Stanley | 0.00% | Add +110.9% | 397,075 | $2.5M |
| Deutsche Bank AG | 0.00% | Add +3.5% | 372,077 | $2.4M |
| Baird Financial Group, Inc. | 0.00% | New | 345,193 | $2.2M |
| Algert Global LLC | 0.02% | Reduce -7.3% | 302,582 | $1.9M |
| Trexquant Investment LP | 0.01% | New | 302,439 | $1.9M |
| Renaissance Technologies | 0.00% | New | 274,392 | $1.7M |
| Bank of America Corp. | 0.00% | Add +4.9% | 252,746 | $1.6M |
| Citadel Advisors | 0.00% | Reduce -58.9% | 238,731 | $1.5M |
| Prudential Financial Inc. | 0.00% | Add +2164.3% | 229,935 | $1.5M |
| XTX Topco Ltd | 0.02% | Add +13.2% | 227,977 | $1.4M |
| First Trust Advisors LP | 0.00% | Add +22.7% | 222,352 | $1.4M |
| Bank of New York Mellon Corp | 0.00% | Add +5.2% | 195,389 | $1.2M |
| Palogic Value Management, L.P. | 0.42% | Reduce -58.8% | 185,589 | $1.2M |
| Citigroup Inc. | 0.00% | Reduce -22.3% | 181,651 | $1.2M |
| Ironwood Investment Management LLC | 0.39% | Add +7.6% | 179,301 | $1.1M |
| Susquehanna International Group, LLP | 0.00% | Reduce -35.3% | 177,419 | $1.1M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 171,150 | $1.1M |
| Jump Financial, LLC | 0.01% | New | 168,865 | $1.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.00% | No change | 157,400 | $998K |
| Nuveen, LLC | 0.00% | Add +7.9% | 145,324 | $921K |
| T. Rowe Price Associates Inc. | 0.00% | Add +21.4% | 130,300 | $827K |
| Public Employees Retirement System of Ohio | 0.00% | Add +104.3% | 128,107 | $812K |
| Jefferies Financial Group Inc. | 0.01% | New | 126,303 | $801K |
| Firsthand Capital Management, Inc. | 1.27% | No change | 125,000 | $793K |
| Russell Investments Group, Ltd. | 0.00% | Add +5.2% | 120,306 | $763K |
| Bridgeway Capital Management, LLC | 0.01% | Add +46.7% | 110,000 | $697K |
| Mitsubishi UFJ Asset Management Co., Ltd. | 0.00% | Reduce -15.7% | 107,505 | $682K |
| Sargent Investment Group, LLC | 0.08% | Reduce -8.6% | 106,432 | $675K |
| Inspire Investing, LLC | 0.03% | Reduce -29.6% | 106,330 | $674K |
| Ieq Capital, LLC | 0.00% | New | 103,313 | $655K |
| RBF Capital, LLC | 0.03% | No change | 100,000 | $634K |
| Man Group plc | 0.00% | Reduce -37.0% | 90,259 | $572K |
| Rhumbline Advisers | 0.00% | Reduce -0.8% | 83,335 | $528K |
| LPL Financial LLC | 0.00% | Add +78.5% | 69,365 | $440K |
| FMR LLC | 0.00% | Add +1428.8% | 68,476 | $434K |
| EntryPoint Capital, LLC | 0.10% | Reduce -53.8% | 67,794 | $430K |
| UBS Group AG | 0.00% | Reduce -64.8% | 66,671 | $423K |
| Oppenheimer & Co. Inc. | 0.00% | Reduce -15.5% | 64,430 | $408K |
| WINTON GROUP Ltd | 0.01% | New | 61,200 | $388K |
| Wells Fargo & Company | 0.00% | Add +107.7% | 59,370 | $376K |
| Centiva Capital, LP | 0.01% | New | 56,459 | $358K |
| Franklin Resources Inc. | 0.00% | Reduce -24.0% | 47,907 | $304K |
| Graham Capital Management, L.P. | 0.01% | Reduce -11.8% | 46,267 | $293K |
| Arax Advisory Partners | 0.00% | New | 46,153 | $293K |
| Quantbot Technologies LP | 0.01% | Add +904.5% | 45,432 | $288K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -70.7% | 43,717 | $277K |
| Mariner, LLC | 0.00% | New | 42,652 | $270K |
| Odyssean, LLC | 0.04% | No change | 41,759 | $265K |
| MetLife Investment Management, LLC | 0.00% | Add +166.4% | 40,269 | $255K |
| Alliancebernstein L.P. | 0.00% | Add +15.7% | 74,130 | $254K |
| Mercer Global Advisors Inc. | 0.00% | New | 38,679 | $245K |
| State of Wyoming | 0.02% | New | 38,000 | $241K |
| Fox Run Management, L.L.C. | 0.04% | New | 37,919 | $240K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 36,820 | $233K |
| Dynamic Technology Lab Private Ltd | 0.05% | Reduce -71.2% | 35,103 | $223K |
| SG Americas Securities, LLC | 0.00% | New | 34,349 | $218K |
| State of Wisconsin Investment Board | 0.00% | Reduce -67.6% | 33,247 | $211K |
| Diversified Trust Co. | 0.00% | New | 33,047 | $210K |
| Concurrent Investment Advisors, LLC | 0.00% | Add +6.7% | 32,050 | $203K |
| Creative Planning | 0.00% | New | 31,432 | $199K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -0.9% | 31,271 | $198K |
| Bailard, Inc. | 0.00% | New | 29,508 | $187K |
| Vanguard Global Advisers, LLC | 0.00% | No change | 28,581 | $181K |
| Cerity Partners LLC | 0.00% | Add +179.4% | 28,365 | $180K |
| Headlands Technologies LLC | 0.02% | New | 27,413 | $174K |
| nVerses Capital, LLC | 0.25% | Reduce -37.8% | 25,234 | $160K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +175.6% | 30,386 | $157K |
"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.