Aspen Aerogels Ownership | Who Owns Aspen Aerogels?
Aspen Aerogels Ownership Summary
Aspen Aerogels is owned by 83.54% institutional investors, 16.21% insiders, and 0.26% retail investors. Kim is the largest institutional shareholder, holding 14.86% of ASPN shares. Needham Aggressive Growth Retail is the top mutual fund, with 3.43% of its assets in Aspen Aerogels shares.
ASPN Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Aspen Aerogels | 83.54% | 16.21% | 0.26% |
| Sector | Industrials Stocks | 49.61% | 15.69% | 34.70% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Kim | 12.28M | 14.86% | $42.00M |
| Oaktop capital management ii | 5.17M | 6.25% | $17.68M |
| Blackrock funding, inc. /de | 4.74M | 5.74% | $16.22M |
| Vanguard group | 4.69M | 5.69% | $13.26M |
| Needham investment management | 4.52M | 5.47% | $15.45M |
| George kaiser family foundation | 3.17M | 3.83% | $10.83M |
| State street | 2.32M | 2.81% | $7.94M |
| Invesco | 2.30M | 2.78% | $7.86M |
| Gagnon securities | 1.86M | 2.25% | $6.37M |
| Rice hall james & associates | 1.55M | 1.88% | $5.31M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Kim | 12.28M | 4.30% | $42.00M |
| Gagnon securities | 1.86M | 1.47% | $6.37M |
| Oaktop capital management ii | 5.17M | 1.32% | $17.68M |
| George kaiser family foundation | 3.17M | 1.23% | $10.83M |
| Samjo management | 645.63K | 0.95% | $2.21M |
| Firsthand capital management | 125.00K | 0.91% | $427.50K |
| Needham investment management | 4.52M | 0.79% | $15.45M |
| Palogic value management | 450.00K | 0.65% | $1.54M |
| Mesirow institutional investment management | 488.60K | 0.45% | $5.80M |
| Telemark asset management | 1.00M | 0.32% | $3.42M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Jacobs levy equity management | 1.22M | 0.02% | 1.08M |
| Royce & associates lp | 986.51K | 0.03% | 986.51K |
| Hrt financial lp | 870.43K | 0.01% | 870.43K |
| D. e. shaw | 833.57K | 0.00% | 810.36K |
| Oaktop capital management ii | 5.17M | 1.32% | 774.15K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Driehaus capital management | - | - | -2.55M |
| Invesco | 2.30M | 0.00% | -1.83M |
| Encompass capital advisors | - | - | -1.70M |
| Loomis sayles & co l p | - | - | -1.62M |
| Penn capital management company | - | - | -1.04M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Royce & associates lp | 986.51K | 0.03% | 986.51K | $3.37M |
| Vanguard fiduciary trust | 454.40K | 0.00% | 454.40K | $1.55M |
| Balyasny asset management | 149.37K | 0.00% | 149.37K | $510.86K |
| Lazard asset management | 141.75K | 0.00% | 141.75K | $484.77K |
| Atom investors lp | 82.65K | 0.04% | 82.65K | $575.23K |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -2.00 |
| Creekmur asset management | -3.00 |
| Skopos labs | -5.00 |
| Federation des caisses desjardins du quebec | -15.00 |
| Capital performance advisors llp | -15.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2026 | 170 | -11.46% | 69,055,768 | -1.49% | 83 | 1.15% | 77 | -12.50% | 55 | -14.06% |
| Dec 31, 2025 | 47 | -78.14% | 20,590,202 | -71.17% | 24 | 0.33% | 22 | -80.70% | 15 | -72.73% |
| Sep 30, 2025 | 73 | -62.94% | 15,786,490 | -77.92% | 19 | 0.25% | 39 | -60.20% | 15 | -74.58% |
| Jun 30, 2025 | 196 | -15.88% | 71,447,619 | 0.55% | 86 | 1.16% | 98 | -20.97% | 59 | -14.49% |
| Mar 31, 2025 | 235 | -7.48% | 71,266,344 | -2.34% | 86 | 0.95% | 125 | -22.36% | 70 | 55.56% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Needham Aggressive Growth Retail | 2.84M | 3.43% | 140.00K |
| Vanguard Total Stock Mkt Idx Inv | 2.57M | 3.10% | - |
| Vanguard US Total Market Shares ETF | 2.41M | 2.94% | 2.16K |
| Invesco WilderHill Clean Energy ETF | 1.70M | 2.06% | - |
| iShares Russell 2000 ETF | 1.58M | 1.91% | 13.35K |
| Columbia Small Cap Value Discv A | 1.03M | 1.25% | - |
| Columbia Small Cap Value Discovery Fund | 1.03M | 1.25% | 46.60K |
| Avantis US Small Cap Value ETF | 992.31K | 1.20% | - |
| Needham Small Cap Growth Retail | 972.50K | 1.17% | 27.07K |
| Loomis Sayles Small Cap Growth Instl | 918.28K | 1.12% | -9.94K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Nov 13, 2025 | Young Donald R | President and CEO | Sell | $183.61K |
| Aug 12, 2025 | Daniel Santhosh P | Chief Accounting Officer | Sell | $32.24K |
| Aug 13, 2025 | Daniel Santhosh P | Chief Accounting Officer | Sell | $15.08K |
| May 12, 2025 | Young Donald R | President and CEO | Buy | $107.00K |
| Sep 30, 2024 | Young Donald R | President and CEO | Sell | $1.90M |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2028 Q1 | - | - |
| 2025 Q4 | - | - |
| 2025 Q3 | - | 2 |
| 2025 Q2 | 1 | - |
| 2025 Q1 | - | - |
ASPN Ownership FAQ
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