Aspen AerogelsASPN
13F holders, Q3 2024 (September 30)243holders +21
63new positions
43sold out
6famous investors
$27.44avg. 13F price*
At the end of Q3 2024, 243 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, up 21 from Q2 2024. 63 opened new positions and 43 sold out. The largest holders were Kim, LLC ($341.5M), BlackRock, Inc. ($129.2M) and Vanguard Group Inc. ($114.5M). 6 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Joel Greenblatt (0.0% of Gotham Asset Management's portfolio).
- Company
- Aspen Aerogels Inc.
- CUSIP
- 04523Y105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 63 | $69.0M |
| Exits | 43 | $92.5M |
All 13F filers, Q2 2024 → Q3 2024: 8,809,124 shares bought and 9,496,617 shares sold, net −687,493 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 243 holders
| Kim, LLC | 44.08% | No change | 12,280,426 | $341.5M |
| BlackRock, Inc. | 0.00% | — | 4,664,325 | $129.2M |
| Vanguard Group Inc. | 0.00% | Add +3.0% | 4,133,995 | $114.5M |
| FMR LLC | 0.01% | Add +23.6% | 4,050,896 | $112.2M |
| Oaktop Capital Management Ii, L.P. | 10.70% | Add +6.0% | 3,540,525 | $98.0M |
| George Kaiser Family Foundation | 13.40% | No change | 3,167,322 | $87.7M |
| Driehaus Capital Management LLC | 0.61% | Add +18.3% | 2,550,857 | $70.6M |
| Needham Investment Management LLC | 4.83% | Reduce -1.2% | 2,272,200 | $62.9M |
| Encompass Capital Advisors LLC | 2.30% | Reduce -12.7% | 1,703,151 | $47.2M |
| Loomis Sayles & Co. L P | 0.06% | Add +22.8% | 1,619,320 | $44.8M |
| Dimensional Fund Advisors LP | 0.01% | Add +17.0% | 1,608,769 | $44.5M |
| Telemark Asset Management, LLC | 4.17% | No change | 1,492,424 | $41.3M |
| American Century Companies Inc. | 0.02% | Add +93.5% | 1,491,123 | $41.3M |
| State Street Corp. | 0.00% | Add +0.6% | 1,410,543 | $39.1M |
| Geode Capital Management, LLC | 0.00% | Add +5.7% | 1,385,968 | $38.4M |
| Royce & Associates LP | 0.31% | Reduce -2.2% | 1,212,097 | $33.6M |
| AWM Investment Company, Inc. | 3.94% | Reduce -1.1% | 1,174,571 | $32.5M |
| Federated Hermes, Inc. | 0.06% | No change | 998,600 | $27.7M |
| UniSuper Management Pty Ltd | 0.20% | No change | 955,387 | $26.5M |
| Samjo Management, LLC | 8.56% | Reduce -13.7% | 895,775 | $24.8M |
| Morgan Stanley | 0.00% | Add +53.2% | 825,877 | $22.9M |
| Nuveen Asset Management, LLC | 0.01% | Add +57.1% | 740,892 | $20.5M |
| Frontier Capital Management Co. LLC | 0.18% | Reduce -59.4% | 708,714 | $19.6M |
| Northern Trust Corp. | 0.00% | Add +10.2% | 563,686 | $15.6M |
| Macquarie Group Ltd. | 0.02% | New | 550,018 | $15.2M |
| Rice Hall James & Associates, LLC | 0.80% | Add +19.9% | 535,113 | $14.8M |
| Susquehanna International Group, LLP | 0.02% | Add +243.0% | 511,131 | $14.2M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +204.7% | 509,430 | $14.1M |
| Mesirow Institutional Investment Management, Inc. | 1.01% | Add +14.1% | 477,070 | $13.2M |
| Ameriprise Financial Inc. | 0.00% | Reduce -30.4% | 445,379 | $12.3M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +153.2% | 399,534 | $11.1M |
| Citadel Advisors | 0.01% | Reduce -36.9% | 397,785 | $11.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -11.4% | 390,757 | $10.8M |
| Lord, Abbett & Co. LLC | 0.03% | New | 365,701 | $10.1M |
| Baird Financial Group, Inc. | 0.02% | Reduce -14.3% | 344,092 | $9.5M |
| Sargent Investment Group, LLC | 1.61% | Add +1.8% | 323,369 | $9.0M |
| Deutsche Bank AG | 0.00% | Add +3.6% | 303,150 | $8.4M |
| Squarepoint Ops LLC | 0.03% | Add +76.9% | 284,238 | $7.9M |
| Gilder Gagnon Howe & Co. LLC | 0.09% | Reduce -2.1% | 279,754 | $7.7M |
| First Trust Advisors LP | 0.01% | Add +0.8% | 276,055 | $7.6M |
| Allspring Global Investments Holdings, LLC | 0.01% | Add +415.2% | 238,884 | $6.6M |
| State of Wisconsin Investment Board | 0.02% | Reduce -2.2% | 233,391 | $6.5M |
| Essex Investment Management Co. LLC | 1.04% | Reduce -26.9% | 215,767 | $6.0M |
| Silvercrest Asset Management Group LLC | 0.04% | Reduce -22.9% | 193,284 | $5.4M |
| Kennedy Capital Management LLC | 0.11% | Add +61.5% | 184,459 | $5.1M |
| Scout Investments, Inc. | 0.13% | New | 220,332 | $5.1M |
| Castleark Management LLC | 0.20% | Reduce -22.0% | 177,874 | $4.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -23.3% | 173,790 | $4.8M |
| Alps Advisors Inc. | 0.03% | Reduce -6.6% | 160,411 | $4.4M |
| Wellington Management Group LLP | 0.00% | New | 150,632 | $4.2M |
| Redwood Grove Capital, LLC | 1.11% | Add +10.9% | 147,705 | $4.1M |
| Renaissance Technologies | 0.01% | Reduce -61.7% | 133,900 | $3.7M |
| UBS Group AG | 0.00% | Reduce -1.8% | 131,251 | $3.6M |
| Hillsdale Investment Management Inc. | 0.28% | Reduce -15.4% | 129,460 | $3.6M |
| Algert Global LLC | 0.10% | Add +60.2% | 127,764 | $3.5M |
| Swiss National Bank | 0.00% | Add +4.9% | 126,400 | $3.5M |
| Bank of America Corp. | 0.00% | Add +4.0% | 125,009 | $3.5M |
| Ardsley Advisory Partners LP | 0.66% | Reduce -68.3% | 125,000 | $3.5M |
| Sora Investors LLC | 0.60% | New | 125,000 | $3.5M |
| Black Swift Group, LLC | 0.65% | Add +34.1% | 106,500 | $2.9M |
| Balyasny Asset Management L.P. | 0.01% | New | 106,133 | $2.9M |
| Firsthand Capital Management, Inc. | 5.74% | Add +2000.0% | 105,000 | $2.9M |
| Oppenheimer & Co. Inc. | 0.04% | Add +167.2% | 102,535 | $2.8M |
| Jump Financial, LLC | 0.06% | Add +14.0% | 98,100 | $2.7M |
| Barclays PLC | 0.00% | Add +333.8% | 92,302 | $2.6M |
| Seven Eight Capital, LP | 0.23% | Reduce -13.2% | 91,423 | $2.5M |
| Bouvel Investment Partners, LLC | 0.95% | Reduce -3.0% | 90,992 | $2.5M |
| Rhumbline Advisers | 0.00% | Reduce -2.9% | 90,490 | $2.5M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Add +10.1% | 88,714 | $2.5M |
| Alberta Investment Management Corp | 0.02% | New | 85,106 | $2.4M |
| HRT Financial LP | 0.01% | New | 83,739 | $2.3M |
| Wells Fargo & Company | 0.00% | Add +96.6% | 83,560 | $2.3M |
| Informed Momentum Co LLC | 0.34% | Reduce -22.8% | 81,034 | $2.2M |
| Two Sigma Investments, LP | 0.01% | Reduce -80.2% | 80,326 | $2.2M |
| Capital Fund Management S.A. | 0.02% | New | 75,558 | $2.1M |
| Strategic Wealth Partners, Ltd. | 0.20% | Add +93.3% | 75,182 | $2.1M |
| Aquatic Capital Management LLC | 0.05% | Add +64.8% | 70,200 | $1.9M |
| NewEdge Advisors, LLC | 0.01% | Add +22.9% | 65,216 | $1.8M |
| Citigroup Inc. | 0.00% | Add +301.6% | 64,615 | $1.8M |
| Graham Capital Management, L.P. | 0.09% | Reduce -5.4% | 63,298 | $1.8M |
| Legal & General Group Plc | 0.00% | Add +8.1% | 63,190 | $1.7M |
| California State Teachers Retirement System | 0.00% | Add +1.9% | 60,781 | $1.7M |
| Caption Management, LLC | 0.18% | New | 60,555 | $1.7M |
| Alliancebernstein L.P. | 0.00% | No change | 57,610 | $1.6M |
| Redwood Investments, LLC | 0.46% | Add +23.6% | 55,907 | $1.5M |
| Peregrine Asset Advisers, Inc. | 0.52% | New | 54,897 | $1.5M |
| Legato Capital Management LLC | 0.18% | Reduce -33.7% | 52,957 | $1.5M |
| Jane Street Group, LLC | 0.00% | Reduce -85.3% | 52,487 | $1.5M |
| Bridgewater Advisors Inc. | 0.15% | Add +37.8% | 77,357 | $1.4M |
| Bantamac Capital, LLC | 0.68% | Add +15.8% | 50,809 | $1.4M |
| Formula Growth Ltd. | 0.48% | Add +66.7% | 50,000 | $1.4M |
| Invesco Ltd. | 0.00% | Reduce -87.6% | 49,147 | $1.4M |
| Penserra Capital Management LLC | 0.03% | New | 48,482 | $1.3M |
| Sei Investments Co. | 0.00% | Reduce -6.5% | 46,472 | $1.3M |
| DLD Asset Management, LP | 3.22% | New | 660,310 | $1.3M |
| D.A. Davidson & Co. | 0.01% | Reduce -0.3% | 42,692 | $1.2M |
| Shelton Wealth Management, LLC | 0.67% | New | 42,640 | $1.2M |
| Fuller & Thaler Asset Management, Inc. | 0.00% | Reduce -77.5% | 38,170 | $1.1M |
| Comerica Bank | 0.00% | Reduce -65.6% | 35,957 | $996K |
| Harbour Capital Advisors, LLC | 0.23% | Add +0.4% | 43,525 | $988K |
"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.