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Aspen Aerogels Inc

ASPN
Exchange
NYSE
Industry
Wholesale-Lumber & Other Construction Materials
SEC CIK
0001145986

In the last 90 days, Aspen Aerogels Inc insiders filed 0 open-market purchases and 1 sale; 179 institutions reported holding it in 13F filings for Q2 2026, worth $464.9M in total; no superinvestor holds it.

13F holders, Q3 2024

Institutional positions in Aspen Aerogels Inc as of Sep 30, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
243
+22 vs. Q2 2024
Shares held
70.2M
+4.01M (+6.1%) vs. Q2 2024
Total value
$1.93B
+$344.1M (+21.8%) vs. Q2 2024
New holders
65
76 more added
Sold out
43
66 more reduced

1 institution that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2024: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ASPN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2024: 243 institutions
Q1 2021: 85 institutionsQ2 2021: 115 institutionsQ3 2021: 130 institutionsQ4 2021: 159 institutionsQ1 2022: 145 institutionsQ2 2022: 148 institutionsQ3 2022: 140 institutionsQ4 2022: 164 institutionsQ1 2023: 156 institutionsQ2 2023: 159 institutionsQ3 2023: 159 institutionsQ4 2023: 170 institutionsQ1 2024: 167 institutionsQ2 2024: 222 institutionsQ3 2024: 243 institutionsQ4 2024: 231 institutionsQ1 2025: 221 institutionsQ2 2025: 182 institutionsQ3 2025: 204 institutionsQ4 2025: 183 institutionsQ1 2026: 166 institutionsQ2 2026: 179 institutions
Value heldQ3 2024: $1.93B
Q1 2021: $482.2MQ2 2021: $849.9MQ3 2021: $1.27BQ4 2021: $1.42BQ1 2022: $1.09BQ2 2022: $366.3MQ3 2022: $344.0MQ4 2022: $793.4MQ1 2023: $498.6MQ2 2023: $524.6MQ3 2023: $582.9MQ4 2023: $1.18BQ1 2024: $1.31BQ2 2024: $1.69BQ3 2024: $1.93BQ4 2024: $868.2MQ1 2025: $455.4MQ2 2025: $423.4MQ3 2025: $496.8MQ4 2025: $199.0MQ1 2026: $236.7MQ2 2026: $464.9M
Institutions holding ASPN and their total value by quarter
QuarterHoldersValue
Q2 2026179$464.9M
Q1 2026166$236.7M
Q4 2025183$199.0M
Q3 2025204$496.8M
Q2 2025182$423.4M
Q1 2025221$455.4M
Q4 2024231$868.2M
Q3 2024243$1.93B
Q2 2024222$1.69B
Q1 2024167$1.31B
Q4 2023170$1.18B
Q3 2023159$582.9M
Q2 2023159$524.6M
Q1 2023156$498.6M
Q4 2022164$793.4M
Q3 2022140$344.0M
Q2 2022148$366.3M
Q1 2022145$1.09B
Q4 2021159$1.42B
Q3 2021130$1.27B
Q2 2021115$849.9M
Q1 202185$482.2M

Institutions, Q3 2024

Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q2 2024.

Institutions holding ASPN in Q3 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Essex Investment Management Co LLC215,767$5.97M1.04%−79,349−26.9%Reduced
State of Wisconsin Investment Board233,391$6.46M0.02%−5,200−2.2%Reduced
Allspring Global Investments Holdings, LLC238,884$6.61M0.01%+192,520+415.2%Added
First Trust Advisors LP276,055$7.64M0.01%+2,247+0.8%Added
Gilder Gagnon Howe & Co LLC279,754$7.75M0.09%−5,898−2.1%Reduced
Squarepoint Ops LLC284,238$7.87M0.03%+123,573+76.9%Added
Deutsche Bank AG303,150$8.39M0.00%+10,425+3.6%Added
Sargent Investment Group, LLC323,369$8.95M1.61%+5,830+1.8%Added
Baird Financial Group, Inc.344,092$9.53M0.02%−57,267−14.3%Reduced
Lord, Abbett & Co. LLC365,701$10.1M0.03%+365,701New
Goldman Sachs Group Inc390,757$10.8M0.00%−50,369−11.4%Reduced
Citadel Advisors LLC397,785$11.0M0.01%−232,771−36.9%Reduced
UBS Asset Management Americas Inc399,534$11.1M0.00%+241,741+153.2%Added
Ameriprise Financial Inc445,379$12.3M0.00%−194,998−30.5%Reduced
Mesirow Institutional Investment Management, Inc.477,070$13.2M1.01%+58,900+14.1%Added
Charles Schwab Investment Management Inc509,430$14.1M0.00%+342,253+204.7%Added
Susquehanna International Group, LLP511,131$14.2M0.02%+362,130+243.0%Added
Rice Hall James & Associates, LLC535,113$14.8M0.80%+88,711+19.9%Added
Macquarie Group Ltd550,018$15.2M0.02%+550,018New
Northern Trust Corp563,686$15.6M0.00%+52,305+10.2%Added
Frontier Capital Management Co LLC708,714$19.6M0.18%−1,036,647−59.4%Reduced
Nuveen Asset Management, LLC740,892$20.5M0.01%+269,173+57.1%Added
Morgan Stanley825,877$22.9M0.00%+286,690+53.2%Added
Samjo Management, LLC895,775$24.8M8.56%−142,725−13.7%Reduced
UniSuper Management Pty Ltd955,387$26.5M0.20%00.0%Unchanged
Federated Hermes, Inc.998,600$27.7M0.06%00.0%Unchanged
AWM Investment Company, Inc.1,174,571$32.5M3.94%−13,631−1.1%Reduced
Royce & Associates LP1,212,097$33.6M0.31%−27,170−2.2%Reduced
Geode Capital Management, LLC1,385,968$38.4M0.00%+75,024+5.7%Added
State Street Corp1,410,543$39.1M0.00%+8,344+0.6%Added
American Century Companies Inc1,491,123$41.3M0.02%+720,394+93.5%Added
Telemark Asset Management, LLC1,492,424$41.3M4.17%00.0%Unchanged
Dimensional Fund Advisors LP1,608,769$44.5M0.01%+234,138+17.0%Added
Loomis Sayles & Co L P1,619,320$44.8M0.06%+300,076+22.7%Added
Encompass Capital Advisors LLC1,703,151$47.2M2.30%−246,849−12.7%Reduced
Needham Investment Management LLC2,272,200$62.9M4.83%−27,529−1.2%Reduced
Driehaus Capital Management LLC2,550,857$70.6M0.61%+394,068+18.3%Added
George Kaiser Family Foundation3,167,322$87.7M13.40%00.0%Unchanged
Oaktop Capital Management II, L.P.3,540,525$98.0M10.70%+200,000+6.0%Added
FMR LLC4,050,896$112.2M0.01%+773,647+23.6%Added
Vanguard Group Inc4,133,995$114.5M0.00%+118,603+3.0%Added
BlackRock, Inc.4,664,325$129.2M0.00%+4,664,325New
Kim, LLC12,280,426$341.5M41.83%00.0%Unchanged
Hood River Capital Management LLC0$00.00%−1,752,519−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−274,440−100.0%Sold out
Assenagon Asset Management S.A.0$00.00%−244,512−100.0%Sold out
G2 Investment Partners Management LLC0$00.00%−198,917−100.0%Sold out
Harvey Partners, LLC0$00.00%−183,000−100.0%Sold out
Trexquant Investment LP0$00.00%−179,276−100.0%Sold out
Cubist Systematic Strategies, LLC0$00.00%−160,088−100.0%Sold out
Twinbeech Capital LP0$00.00%−139,089−100.0%Sold out
Intrinsic Edge Capital Management LLC0$00.00%−100,000−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−93,480−100.0%Sold out
Marex Group plc0$00.00%−85,001−100.0%Sold out
Boothbay Fund Management, LLC0$00.00%−53,505−100.0%Sold out
Jackson Creek Investment Advisors LLC0$00.00%−41,589−100.0%Sold out
Engineers Gate Manager LP0$00.00%−38,987−100.0%Sold out
Dynamic Technology Lab Private Ltd0$00.00%−37,456−100.0%Sold out
Sherbrooke Park Advisers LLC0$00.00%−22,876−100.0%Sold out
Quantbot Technologies LP0$00.00%−21,450−100.0%Sold out
O'Neil Global Advisors, Inc.0$00.00%−21,203−100.0%Sold out
Toroso Investments, LLC0$00.00%−21,056−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−20,274−100.0%Sold out
Omers Administration Corp0$00.00%−20,100−100.0%Sold out
Fox Run Management, L.L.C.0$00.00%−19,100−100.0%Sold out
Brevan Howard Capital Management LP0$00.00%−18,665−100.0%Sold out
Alpha DNA Investment Management LLC0$00.00%−16,686−100.0%Sold out
Crossmark Global Holdings, Inc.0$00.00%−16,474−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−15,300−100.0%Sold out
JW Asset Management, LLC0$00.00%−15,000−100.0%Sold out
Cetera Investment Advisers0$00.00%−13,856−100.0%Sold out
Calamos Advisors LLC0$00.00%−13,739−100.0%Sold out
Quadrature Capital Ltd0$00.00%−10,038−100.0%Sold out
Aigen Investment Management, LP0$00.00%−9,783−100.0%Sold out
Bridgefront Capital, LLC0$00.00%−9,217−100.0%Sold out
Point72 (DIFC) Ltd0$00.00%−5,064−100.0%Sold out
Point72 Hong Kong Ltd0$00.00%−3,515−100.0%Sold out
Gen-Wealth Partners Inc0$00.00%−2,745−100.0%Sold out
Quarry LP0$00.00%−819−100.0%Sold out
Macroview Investment Management LLC0$00.00%−301−100.0%Sold out
Wetzel Investment Advisors, Inc.0$00.00%−400−100.0%Sold out
SRS Capital Advisors, Inc.0$00.00%−267−100.0%Sold out
LRI Investments, LLC0$00.00%−204−100.0%Sold out
Tyler-Stone Wealth Management0$00.00%−200−100.0%Sold out
Valley National Advisers Inc0$00.00%−90−100.0%Sold out
Innealta Capital, LLC0$00.00%−23−100.0%Sold out
BlackRock Inc.––––Not filed