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Aspen Aerogels (ASPN) Institutional Ownership

Aspen Aerogels logo
$5.46 +0.25 (+4.69%)
Closing price 03:59 PM Eastern
Extended Trading
$5.45 -0.01 (-0.27%)
As of 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Aspen Aerogels (NYSE:ASPN)

Current
Institutional Ownership
Percentage
97.64%
Number of
Institutional Buyers
(last 12 months)
100
Total
Institutional Inflows
(last 12 months)
$175.83M
Number of
Institutional Sellers
(last 12 months)
51
Total
Institutional Outflows
(last 12 months)
$40.42M
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ASPN Institutional Buying and Selling by Quarter

Aspen Aerogels Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026WINTON GROUP Ltd61,200$388K0.0%N/A0.074%
9/9/2026IFP Advisors Inc5,561$35K0.0%-37.5%0.007%
9/9/2026Squarepoint Ops LLC16,460$104K0.0%-72.5%0.020%
9/9/2026Baird Financial Group Inc.345,193$2.19M0.0%N/A0.416%
8/22/2026Concurrent Investment Advisors LLC32,050$203K0.0%+6.7%0.039%
8/20/2026Headlands Technologies LLC27,413$174K0.0%N/A0.033%
8/19/2026Hsbc Holdings PLC13,846$86K0.0%-86.8%0.017%
8/18/2026Equitable Holdings Inc.13,830$88K0.0%N/A0.017%
8/18/2026Jefferies Financial Group Inc.126,303$801K0.0%N/A0.152%
8/18/2026Public Employees Retirement System of Ohio128,107$812K0.0%N/A0.154%
8/17/2026Palogic Value Management L.P.185,589$1.18M0.4%N/A0.224%
8/17/2026Bank of America Corp DE252,746$1.60M0.0%N/A0.305%
8/15/2026Odyssean LLC41,759$265K0.0%N/A0.050%
8/15/2026Man Group plc90,259$572K0.0%N/A0.109%
8/14/2026Hsbc Holdings PLC13,846$86K0.0%N/A0.017%
8/14/2026Canada Pension Plan Investment Board20,700$131K0.0%N/A0.025%
8/14/2026Legal & General Group Plc6,915$44K0.0%N/A0.008%
8/14/2026The Manufacturers Life Insurance Company19,056$121K0.0%N/A0.023%
8/14/2026Algert Global LLC302,582$1.92M0.0%-7.3%0.365%
8/12/2026Quantbot Technologies LP45,432$288K0.0%N/A0.055%
8/12/2026George Kaiser Family Foundation3,167,322$20.08M1.9%N/A3.817%
8/12/2026Ieq Capital LLC103,313$655K0.0%N/A0.124%
8/7/2026Oaktop Capital Management II L.P.5,168,674$32.77M1.4%N/A6.236%
8/7/2026BlackRock Inc.5,277,148$33.46M0.0%N/A6.367%
8/7/2026Pallas Capital Advisors LLC10,900$69K0.0%N/A0.013%
8/7/2026Deutsche Bank AG372,077$2.36M0.0%N/A0.449%
8/7/2026Rice Hall James & Associates LLC1,635,259$10.37M0.5%N/A1.973%
8/7/2026Mitsubishi UFJ Asset Management Co. Ltd.107,505$682K0.0%N/A0.130%
8/6/2026Bank of New York Mellon Corp195,389$1.24M0.0%N/A0.236%
8/6/2026State of Wyoming38,000$241K0.0%N/A0.046%
5/19/2026Bank of America Corp DE241,020$824K0.0%-68.0%0.291%
5/18/2026Royal Bank of Canada8,523$29K0.0%+95.8%0.010%
5/16/2026The Manufacturers Life Insurance Company18,298$63K0.0%-13.5%0.022%
5/16/2026Lazard Asset Management LLC141,745$485K0.0%N/A0.171%
5/15/2026Rice Hall James & Associates LLC1,552,628$5.31M0.3%+9.2%1.873%
5/14/2026Public Employees Retirement System of Ohio62,700$214K0.0%N/A0.076%
5/13/2026First Trust Advisors LP181,234$620K0.0%-7.8%0.219%
5/7/2026Dimensional Fund Advisors LP1,256,480$4.30M0.0%-37.3%1.517%
5/5/2026Bank of New York Mellon Corp185,673$635K0.0%-5.7%0.224%
4/30/2026Hsbc Holdings PLC104,982$359K0.0%+350.1%0.127%
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4/23/2026Inspire Investing LLC151,004$516K0.0%-9.5%0.182%
4/21/2026Clarus Group Inc.10,504$36K0.0%N/A0.013%
3/20/2026Hsbc Holdings PLC23,326$66K0.0%N/A0.028%
3/3/2026Caitong International Asset Management Co. Ltd10,586$30K0.0%N/A0.013%
2/26/2026Aristides Capital LLC62,400$177K0.0%N/A0.075%
2/19/2026Invesco Ltd.4,129,934$11.69M0.0%+237.9%4.997%
2/18/2026XTX Topco Ltd202,030$572K0.0%+786.1%0.244%
2/18/2026Tudor Investment Corp ET AL79,171$224K0.0%-83.7%0.096%
2/18/2026Quadrature Capital Ltd35,583$101K0.0%+248.5%0.043%
2/18/2026Numerai GP LLC251,888$713K0.1%+1,277.9%0.305%
2/18/2026Oxford Asset Management LLP24,083$68K0.0%N/A0.029%
2/18/2026Odyssean LLC41,759$118K0.1%N/A0.051%
2/18/2026Millennium Management LLC870,951$2.47M0.0%-39.8%1.054%
2/18/2026Inspire Investing LLC166,874$472K0.0%+152.4%0.202%
2/18/2026Engineers Gate Manager LP119,227$337K0.0%N/A0.144%
2/18/2026Caption Management LLC36,100$102K0.0%+20.3%0.044%
2/17/2026Schonfeld Strategic Advisors LLC20,350$58K0.0%N/A0.025%
2/17/2026AQR Capital Management LLC369,949$1.05M0.0%+108.1%0.448%
2/17/2026Jain Global LLC87,835$249K0.0%N/A0.106%
2/17/2026Samjo Management LLC798,525$2.26M0.9%+134.3%0.966%
2/17/2026Jump Financial LLC551,071$1.56M0.0%+2.5%0.667%
2/17/2026Price T Rowe Associates Inc. MD98,299$279K0.0%+28.3%0.119%
2/17/2026California State Teachers Retirement System78,454$222K0.0%+29.3%0.095%
2/17/2026Russell Investments Group Ltd.95,651$271K0.0%-28.7%0.116%
2/17/2026State of Wisconsin Investment Board120,238$340K0.0%-53.2%0.145%
2/17/2026ExodusPoint Capital Management LP65,470$185K0.0%-43.8%0.079%
2/17/2026Graham Capital Management L.P.158,839$450K0.0%+50.0%0.192%
2/17/2026RBF Capital LLC100,000$283K0.0%N/A0.121%
2/17/2026Rice Hall James & Associates LLC1,421,605$4.02M0.2%+1.0%1.720%
2/17/2026Needham Investment Management LLC4,351,700$12.32M0.8%+26.5%5.265%
2/16/2026Verition Fund Management LLC96,973$274K0.0%+47.0%0.117%
2/16/2026Sargent Investment Group LLC141,607$401K0.1%-25.2%0.171%
2/16/2026Healthcare of Ontario Pension Plan Trust Fund157,400$445K0.0%N/A0.190%
2/13/2026Marshall Wace LLP554,180$1.57M0.0%+77.5%0.671%
2/13/2026Samjo Management LLC798,525$2.26M0.9%+134.3%0.966%
2/13/2026AWM Investment Company Inc.41,092$116K0.0%-97.4%0.050%
2/13/2026FirstWave Capital Management LLC372,001$1.05M0.6%N/A0.450%
2/13/2026Charles Schwab Investment Management Inc.540,323$1.53M0.0%-5.6%0.654%
2/13/2026Police & Firemen s Retirement System of New Jersey16,663$47K0.0%-21.1%0.020%
2/13/2026State Street Corp2,501,469$7.08M0.0%+28.6%3.027%
2/13/2026Dynamic Technology Lab Private Ltd103,281$292K0.1%N/A0.125%
2/13/2026Wells Fargo & Company MN82,170$233K0.0%+52.8%0.099%
2/13/2026Gagnon Securities LLC1,133,248$3.21M0.7%-35.4%1.371%
2/12/2026MetLife Investment Management LLC27,154$77K0.0%-10.8%0.033%
2/12/2026Aristides Capital LLC62,400$177K0.0%N/A0.075%
2/12/2026StoneX Group Inc.14,474$41K0.0%N/A0.018%
2/12/2026Dimensional Fund Advisors LP2,003,963$5.67M0.0%-11.0%2.425%
2/12/2026EntryPoint Capital LLC110,142$312K0.1%+69.0%0.133%
2/12/2026Federated Hermes Inc.564,486$1.60M0.0%+94.7%0.683%
2/12/2026New York State Common Retirement Fund16,231$46K0.0%-97.7%0.020%
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2/12/2026Ironwood Investment Management LLC127,460$361K0.2%-5.1%0.154%
2/12/2026Alps Advisors Inc.116,372$329K0.0%-5.9%0.141%
2/11/2026Janney Montgomery Scott LLC14,093$40K0.0%-33.0%0.017%
2/11/2026Deutsche Bank AG223,093$631K0.0%+1.3%0.270%
2/11/2026LPL Financial LLC55,076$156K0.0%-50.3%0.067%
2/11/2026JPMorgan Chase & Co.1,483,745$4.20M0.0%+9.9%1.795%
2/11/2026Los Angeles Capital Management LLC118,664$336K0.0%-14.8%0.144%
2/11/2026Telemark Asset Management LLC1,000,000$2.83M0.3%-44.2%1.210%
2/11/2026WINTON GROUP Ltd14,200$40K0.0%N/A0.017%
2/10/2026Goldman Sachs Group Inc.1,294,928$3.67M0.0%-8.8%1.567%


ASPN Institutional Ownership - Frequently Asked Questions

During the previous two years, 239 institutional investors and hedge funds held shares of Aspen Aerogels. The most heavily invested institutionals were FMR LLC ($112.17M), Loomis Sayles & Co. L P ($44.84M), BlackRock Inc. ($33.46M), Oaktop Capital Management II L.P. ($32.77M), Vanguard Group Inc. ($31.39M), George Kaiser Family Foundation ($20.08M), and Point72 Asset Management L.P. ($13.12M).Learn more on Aspen Aerogels' institutional investors.

97.64% of Aspen Aerogels' stock is owned by institutional investors. Learn more on ASPN's institutional investor holdings.

Of the 218 institutional investors that purchased Aspen Aerogels' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Oaktop Capital Management II L.P. ($5.37M), BlackRock Inc. ($5.28M), Invesco Ltd. ($4.08M), George Kaiser Family Foundation ($3.17M), Rice Hall James & Associates LLC ($2.16M), Millennium Management LLC ($2.13M), and Federated Hermes Inc. ($2.04M).

Institutional investors have bought a total of 32,177,957 shares in the last 24 months. This purchase volume represents approximately $175.83M in transactions.

Of the 51 institutional investors that sold Aspen Aerogels' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: AWM Investment Company Inc. ($1.51M), Federated Hermes Inc. ($1.48M), Dimensional Fund Advisors LP ($1.19M), Telemark Asset Management LLC ($792.42K), Gagnon Securities LLC ($765.86K), New York State Common Retirement Fund ($703.79K), and Millennium Management LLC ($576.57K).

Institutional investors have sold a total of 9,778,431 shares in the last 24 months. This volume of shares sold represents approximately $40.42M in transactions.


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Institutional ownership data for NYSE:ASPN is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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