Aspen Aerogels Ownership | Who Owns Aspen Aerogels?
Aspen Aerogels Ownership Summary
Aspen Aerogels is owned by 86.94% institutional investors, 16.33% insiders. Kim is the largest institutional shareholder, holding 16.10% of ASPN shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.13% of its assets in Aspen Aerogels shares.
ASPN Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Aspen Aerogels | 86.94% | 16.33% | -3.27% |
| Sector | Industrials Stocks | 64.11% | 12.70% | 23.19% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Kim | 12.28M | 16.10% | $145.89M |
| Blackrock funding, inc. /de | 4.98M | 6.06% | $29.46M |
| Vanguard group | 4.36M | 5.72% | $51.80M |
| Oaktop capital management ii | 3.74M | 4.90% | $44.44M |
| George kaiser family foundation | 3.17M | 3.85% | $18.75M |
| Needham investment management | 3.01M | 3.67% | $17.84M |
| Dimensional fund advisors lp | 2.02M | 2.65% | $23.98M |
| Gagnon securities | 1.90M | 2.31% | $11.24M |
| Telemark asset management | 1.79M | 2.18% | $10.61M |
| Millennium management | 1.62M | 2.13% | $19.27M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Kim | 12.28M | 18.39% | $145.89M |
| Oaktop capital management ii | 3.74M | 5.55% | $44.44M |
| George kaiser family foundation | 3.17M | 2.70% | $18.75M |
| Firsthand capital management | 105.00K | 2.60% | $1.25M |
| Gagnon securities | 1.90M | 2.28% | $11.24M |
| Gagnon advisors | 565.57K | 2.25% | $3.35M |
| Palogic value management | 610.00K | 1.47% | $3.61M |
| Needham investment management | 3.01M | 1.42% | $17.84M |
| Telemark asset management | 1.79M | 0.96% | $10.61M |
| Awm investment company | 1.44M | 0.95% | $8.50M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Gagnon securities | 1.90M | 2.28% | 1.90M |
| Millennium management | 1.62M | 0.01% | 1.59M |
| Cubist systematic strategies | 1.39M | 0.10% | 1.39M |
| Rice hall james & associates | 1.54M | 0.49% | 715.63K |
| Renaissance | 766.40K | 0.01% | 632.50K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Fmr | 1.23M | 0.00% | -2.82M |
| Driehaus capital management | - | - | -2.55M |
| Encompass capital advisors | - | - | -1.70M |
| Loomis sayles & co l p | - | - | -1.62M |
| Point72 asset management | - | - | -1.10M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Gagnon securities | 1.90M | 2.28% | 1.90M | $11.24M |
| Gagnon advisors | 565.57K | 2.25% | 565.57K | $3.35M |
| Ironwood investment management | 124.32K | 0.36% | 124.32K | $736.00K |
| Y-intercept (hong kong) | 81.68K | 0.01% | 81.68K | $483.57K |
| Mml investors services | 15.79K | 0.00% | 15.79K | $94.00K |
Sold Out
| Holder | Change |
|---|---|
| Tfc financial management | -2.00 |
| Creekmur asset management | -3.00 |
| Capital performance advisors llp | -15.00 |
| Federation des caisses desjardins du quebec | -15.00 |
| C m bidwell & associates | -22.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Dec 31, 2024 | 248 | -6.06% | 71,699,845 | 2.19% | 94 | 1.11% | 154 | 8.45% | 46 | -30.30% |
| Sep 30, 2024 | 262 | 10.55% | 70,144,949 | -0.59% | 91 | 1.06% | 140 | 3.70% | 66 | 4.76% |
| Jun 30, 2024 | 237 | 32.40% | 70,558,047 | -5.64% | 93 | 0.96% | 135 | 70.89% | 63 | 21.15% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 2.57M | 3.13% | -57.08K |
| Vanguard US Total Market Shares ETF | 2.41M | 2.94% | 2.16K |
| Needham Aggressive Growth Retail | 1.62M | 1.97% | 120.00K |
| iShares Russell 2000 ETF | 1.55M | 1.88% | -29.40K |
| Federated Hermes MDT SCC Institutional | 1.04M | 1.27% | 1.04M |
| Federated Hermes MDT Small Cap Core IS | 1.04M | 1.27% | 1.04M |
| Loomis Sayles Small Cap Growth Instl | 918.28K | 1.12% | -9.94K |
| American Century Small Cap Growth Inv | 791.75K | 0.96% | -185.46K |
| American Century U.S. Small Cap Growth | 791.75K | 0.96% | -185.46K |
| Needham Small Cap Growth Retail | 774.50K | 0.94% | 74.50K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Aug 13, 2025 | Daniel Santhosh P | Chief Accounting Officer | Sell | $15.08K |
| Aug 12, 2025 | Daniel Santhosh P | Chief Accounting Officer | Sell | $32.24K |
| May 12, 2025 | Young Donald R | President and CEO | Buy | $107.00K |
| Sep 30, 2024 | Young Donald R | President and CEO | Sell | $1.90M |
| Aug 26, 2024 | RODRIGUEZ RICARDO C. | CFO & Treasurer | Sell | $33.78K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q3 | - | 2 |
| 2025 Q2 | 1 | - |
| 2025 Q1 | - | - |
| 2024 Q4 | - | - |
| 2024 Q3 | - | 6 |
ASPN Ownership FAQ
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