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Aspen Aerogels (ASPN) Institutional Ownership

Aspen Aerogels logo
$5.15 +0.04 (+0.78%)
As of 01:52 PM Eastern
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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)
$173.25M
Number of
Institutional Sellers
(last 12 months)
50
Total
Institutional Outflows
(last 12 months)
$40.12M
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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
8/20/2026 Headlands Technologies LLC27,413$174K0.0%N/A0.033%
8/19/2026 Hsbc Holdings PLC13,846$86K0.0%-86.8%0.017%
8/18/2026 Equitable Holdings Inc.13,830$88K0.0%N/A0.017%
8/18/2026Jefferies Financial Group Inc.126,303$801K0.0%N/A0.152%
8/18/2026 Public Employees Retirement System of Ohio128,107$812K0.0%N/A0.154%
8/17/2026 Palogic Value Management L.P.185,589$1.18M0.4%N/A0.224%
8/17/2026 Bank of America Corp DE252,746$1.60M0.0%N/A0.305%
8/15/2026 Odyssean LLC41,759$265K0.0%N/A0.050%
8/15/2026 Man Group plc90,259$572K0.0%N/A0.109%
8/14/2026 Hsbc Holdings PLC13,846$86K0.0%N/A0.017%
8/14/2026 Canada Pension Plan Investment Board20,700$131K0.0%N/A0.025%
8/14/2026 Legal & General Group Plc6,915$44K0.0%N/A0.008%
8/14/2026 The Manufacturers Life Insurance Company 19,056$121K0.0%N/A0.023%
8/14/2026 Algert Global LLC302,582$1.92M0.0%-7.3%0.365%
8/12/2026 Quantbot Technologies LP45,432$288K0.0%N/A0.055%
8/12/2026 George Kaiser Family Foundation3,167,322$20.08M1.9%N/A3.817%
8/12/2026 Ieq Capital LLC103,313$655K0.0%N/A0.124%
8/7/2026 Oaktop Capital Management II L.P.5,168,674$32.77M1.4%N/A6.236%
8/7/2026 BlackRock Inc.5,277,148$33.46M0.0%N/A6.367%
8/7/2026 Pallas Capital Advisors LLC10,900$69K0.0%N/A0.013%
8/7/2026 Deutsche Bank AG372,077$2.36M0.0%N/A0.449%
8/7/2026 Rice Hall James & Associates LLC1,635,259$10.37M0.5%N/A1.973%
8/7/2026 Mitsubishi UFJ Asset Management Co. Ltd.107,505$682K0.0%N/A0.130%
8/6/2026 Bank of New York Mellon Corp195,389$1.24M0.0%N/A0.236%
8/6/2026 State of Wyoming38,000$241K0.0%N/A0.046%
5/19/2026 Bank of America Corp DE241,020$824K0.0%-68.0%0.291%
5/18/2026 Royal Bank of Canada8,523$29K0.0%+95.8%0.010%
5/16/2026 The Manufacturers Life Insurance Company18,298$63K0.0%-13.5%0.022%
5/16/2026 Lazard Asset Management LLC141,745$485K0.0%N/A0.171%
5/15/2026 Rice Hall James & Associates LLC1,552,628$5.31M0.3%+9.2%1.873%
5/14/2026 Public Employees Retirement System of Ohio62,700$214K0.0%N/A0.076%
5/13/2026 First Trust Advisors LP181,234$620K0.0%-7.8%0.219%
5/7/2026 Dimensional Fund Advisors LP1,256,480$4.30M0.0%-37.3%1.517%
5/5/2026 Bank of New York Mellon Corp185,673$635K0.0%-5.7%0.224%
4/30/2026 Hsbc Holdings PLC104,982$359K0.0%+350.1%0.127%
4/23/2026 Inspire Investing LLC151,004$516K0.0%-9.5%0.182%
4/21/2026 Clarus Group Inc.10,504$36K0.0%N/A0.013%
3/20/2026 Hsbc Holdings PLC23,326$66K0.0%N/A0.028%
3/3/2026 Caitong International Asset Management Co. Ltd10,586$30K0.0%N/A0.013%
2/26/2026 Aristides Capital LLC62,400$177K0.0%N/A0.075%
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2/19/2026 Invesco Ltd.4,129,934$11.69M0.0%+237.9%4.997%
2/18/2026 XTX Topco Ltd202,030$572K0.0%+786.1%0.244%
2/18/2026 Tudor Investment Corp ET AL79,171$224K0.0%-83.7%0.096%
2/18/2026 Quadrature Capital Ltd35,583$101K0.0%+248.5%0.043%
2/18/2026 Numerai GP LLC251,888$713K0.1%+1,277.9%0.305%
2/18/2026 Oxford Asset Management LLP24,083$68K0.0%N/A0.029%
2/18/2026 Odyssean LLC41,759$118K0.1%N/A0.051%
2/18/2026 Millennium Management LLC870,951$2.47M0.0%-39.8%1.054%
2/18/2026 Inspire Investing LLC166,874$472K0.0%+152.4%0.202%
2/18/2026 Engineers Gate Manager LP119,227$337K0.0%N/A0.144%
2/18/2026 Caption Management LLC36,100$102K0.0%+20.3%0.044%
2/17/2026 Schonfeld Strategic Advisors LLC20,350$58K0.0%N/A0.025%
2/17/2026 AQR Capital Management LLC369,949$1.05M0.0%+108.1%0.448%
2/17/2026 Jain Global LLC87,835$249K0.0%N/A0.106%
2/17/2026 Samjo Management LLC798,525$2.26M0.9%+134.3%0.966%
2/17/2026 Jump Financial LLC551,071$1.56M0.0%+2.5%0.667%
2/17/2026 Price 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%
2/17/2026 Russell Investments Group Ltd.95,651$271K0.0%-28.7%0.116%
2/17/2026 State of Wisconsin Investment Board120,238$340K0.0%-53.2%0.145%
2/17/2026 ExodusPoint Capital Management LP65,470$185K0.0%-43.8%0.079%
2/17/2026 Graham Capital Management L.P.158,839$450K0.0%+50.0%0.192%
2/17/2026 RBF Capital LLC100,000$283K0.0%N/A0.121%
2/17/2026 Rice Hall James & Associates LLC1,421,605$4.02M0.2%+1.0%1.720%
2/17/2026 Needham Investment Management LLC4,351,700$12.32M0.8%+26.5%5.265%
2/16/2026 Verition Fund Management LLC96,973$274K0.0%+47.0%0.117%
2/16/2026 Sargent Investment Group LLC141,607$401K0.1%-25.2%0.171%
2/16/2026 Healthcare of Ontario Pension Plan Trust Fund157,400$445K0.0%N/A0.190%
2/13/2026 Marshall Wace LLP554,180$1.57M0.0%+77.5%0.671%
2/13/2026 Samjo Management LLC798,525$2.26M0.9%+134.3%0.966%
2/13/2026 AWM Investment Company Inc.41,092$116K0.0%-97.4%0.050%
2/13/2026 FirstWave Capital Management LLC372,001$1.05M0.6%N/A0.450%
2/13/2026 Charles Schwab Investment Management Inc.540,323$1.53M0.0%-5.6%0.654%
2/13/2026 Police & Firemen s Retirement System of New Jersey16,663$47K0.0%-21.1%0.020%
2/13/2026 State Street Corp2,501,469$7.08M0.0%+28.6%3.027%
2/13/2026 Dynamic Technology Lab Private Ltd103,281$292K0.1%N/A0.125%
2/13/2026 Wells Fargo & Company MN82,170$233K0.0%+52.8%0.099%
2/13/2026 Gagnon Securities LLC1,133,248$3.21M0.7%-35.4%1.371%
2/12/2026 MetLife Investment Management LLC27,154$77K0.0%-10.8%0.033%
2/12/2026 Aristides Capital LLC62,400$177K0.0%N/A0.075%
2/12/2026 StoneX Group Inc.14,474$41K0.0%N/A0.018%
2/12/2026 Dimensional Fund Advisors LP2,003,963$5.67M0.0%-11.0%2.425%
2/12/2026 EntryPoint Capital LLC110,142$312K0.1%+69.0%0.133%
2/12/2026 Federated Hermes Inc.564,486$1.60M0.0%+94.7%0.683%
2/12/2026 New York State Common Retirement Fund16,231$46K0.0%-97.7%0.020%
2/12/2026 Ironwood Investment Management LLC127,460$361K0.2%-5.1%0.154%
2/12/2026 Alps Advisors Inc.116,372$329K0.0%-5.9%0.141%
2/11/2026 Janney Montgomery Scott LLC14,093$40K0.0%-33.0%0.017%
2/11/2026 Deutsche Bank AG223,093$631K0.0%+1.3%0.270%
2/11/2026 LPL Financial LLC55,076$156K0.0%-50.3%0.067%
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2/11/2026 JPMorgan Chase & Co.1,483,745$4.20M0.0%+9.9%1.795%
2/11/2026 Los Angeles Capital Management LLC118,664$336K0.0%-14.8%0.144%
2/11/2026 Telemark Asset Management LLC1,000,000$2.83M0.3%-44.2%1.210%
2/11/2026 WINTON GROUP Ltd14,200$40K0.0%N/A0.017%
2/10/2026 Goldman Sachs Group Inc.1,294,928$3.67M0.0%-8.8%1.567%
2/10/2026 Intech Investment Management LLC25,382$72K0.0%-43.6%0.031%
2/9/2026 Geode Capital Management LLC1,602,049$4.54M0.0%+1.1%1.938%
2/9/2026 Connors Investor Services Inc.55,167$156K0.0%+37.3%0.067%
2/6/2026 Legato Capital Management LLC15,562$44K0.0%-83.4%0.019%
2/5/2026 ARS Investment Partners LLC40,765$115K0.0%-32.1%0.049%


ASPN Institutional Ownership - Frequently Asked Questions

During the previous two years, 241 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 220 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 31,771,954 shares in the last 24 months. This purchase volume represents approximately $173.25M in transactions.

Of the 50 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 9,731,803 shares in the last 24 months. This volume of shares sold represents approximately $40.12M 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 8/20/2026. New 13F filings are added each quarter as they're published.
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