Who Owns ASPEN AEROGELS INC (ASPN)? -- Institutional Holders (2026-06-30)
202 institutions reported holding $475.2M of ASPEN AEROGELS INC (ASPN) in SEC 13F filings for 2026-06-30. Largest institutional holders: KIM, LLC ($77.9M), BlackRock, Inc. ($33.5M), OAKTOP CAPITAL MANAGEMENT II, L.P. ($32.8M), VANGUARD GROUP INC ($30.1M), NEEDHAM INVESTMENT MANAGEMENT LLC ($20.7M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | KIM, LLC | $77.9M | 12.3M | Hold |
| 2 | BlackRock, Inc. | $33.5M | 5.3M | Added |
| 3 | OAKTOP CAPITAL MANAGEMENT II, L.P. | $32.8M | 5.2M | Hold |
| 4 | VANGUARD GROUP INC | $30.1M | 4.7M | Added |
| 5 | NEEDHAM INVESTMENT MANAGEMENT LLC | $20.7M | 3.3M | Trimmed |
| 6 | George Kaiser Family Foundation | $20.1M | 3.2M | Hold |
| 7 | STATE STREET CORP | $16.2M | 2.6M | Added |
| 8 | AMERICAN CENTURY COMPANIES INC | $15.9M | 2.5M | Added |
| 9 | JACOBS LEVY EQUITY MANAGEMENT, INC | $13.0M | 2.1M | Added |
| 10 | AMERIPRISE FINANCIAL INC | $11.5M | 1.8M | Added |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $11.2M | 1.8M | Added |
| 12 | RICE HALL JAMES & ASSOCIATES, LLC | $10.4M | 1.6M | Added |
| 13 | Invesco Ltd. | $10.3M | 1.6M | Trimmed |
| 14 | GAGNON SECURITIES LLC | $9.7M | 1.5M | Trimmed |
| 15 | DIMENSIONAL FUND ADVISORS LP | $9.2M | 1.4M | Added |
| 16 | GOLDMAN SACHS GROUP INC | $8.7M | 1.4M | Added |
| 17 | ROYCE & ASSOCIATES LP | $8.4M | 1.3M | Added |
| 18 | AQR CAPITAL MANAGEMENT LLC | $8.1M | 1.3M | Added |
| 19 | MILLENNIUM MANAGEMENT LLC | $7.5M | 1.2M | Trimmed |
| 20 | MARSHALL WACE, LLP | $7.3M | 1.1M | Trimmed |
| 21 | D. E. Shaw & Co., Inc. | $6.8M | 1.1M | Added |
| 22 | Telemark Asset Management, LLC | $6.3M | 1.0M | Hold |
| 23 | JPMORGAN CHASE & CO | $6.0M | 1.0M | Added |
| 24 | BNP PARIBAS FINANCIAL MARKETS | $5.5M | 867,199 | Added |
| 25 | TWO SIGMA INVESTMENTS, LP | $4.9M | 779,468 | Added |
Source: SEC Form 13F filings · as of 2026-06-30