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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, Q4 2024

Institutional positions in Aspen Aerogels Inc as of Dec 31, 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
231
−6 vs. Q3 2024
Shares held
73.0M
+3.12M (+4.5%) vs. Q3 2024
Total value
$868.2M
−$1.05B (−54.8%) vs. Q3 2024
New holders
64
99 more added
Sold out
70
42 more reduced

6 institutions that held it in Q3 2024 haven't filed for Q4 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 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 holdersQ4 2024: 231 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 heldQ4 2024: $868.2M
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, Q4 2024

Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q3 2024.

Institutions holding ASPN in Q4 2024
InstitutionSharesValue% of portfolioChange in sharesAction
Nuveen Asset Management, LLC562,303$6.68M0.00%−178,589−24.1%Reduced
UBS Asset Management Americas Inc588,395$6.99M0.00%+188,861+47.3%Added
Two Sigma Investments, LP592,765$7.04M0.02%+512,439+637.9%Added
Citadel Advisors LLC624,230$7.42M0.01%+226,445+56.9%Added
Federated Hermes, Inc.630,500$7.49M0.02%−368,100−36.9%Reduced
Northern Trust Corp641,050$7.62M0.00%+77,364+13.7%Added
Goldman Sachs Group Inc671,770$7.98M0.00%+281,013+71.9%Added
Renaissance Technologies LLC766,400$9.10M0.01%+632,500+472.4%Added
Dendur Capital LP775,000$9.21M1.05%+775,000New
Morgan Stanley775,331$9.21M0.00%−50,546−6.1%Reduced
Qube Research & Technologies Ltd783,235$9.30M0.02%+769,377+5,551.9%Added
Alyeska Investment Group, L.P.800,000$9.50M0.04%+800,000New
UniSuper Management Pty Ltd848,287$10.1M0.07%−107,100−11.2%Reduced
Samjo Management, LLC874,650$10.4M3.92%−21,125−2.4%Reduced
Royce & Associates LP946,623$11.2M0.10%−265,474−21.9%Reduced
American Century Companies Inc1,003,184$11.9M0.01%−487,939−32.7%Reduced
Point72 Asset Management, L.P.1,104,549$13.1M0.04%+1,104,549New
AWM Investment Company, Inc.1,208,686$14.4M1.75%+34,115+2.9%Added
FMR LLC1,226,073$14.6M0.00%−2,824,823−69.7%Reduced
Cubist Systematic Strategies, LLC1,393,213$16.6M0.27%+1,393,213New
Geode Capital Management, LLC1,464,163$17.4M0.00%+78,195+5.6%Added
State Street Corp1,487,462$17.7M0.00%+76,919+5.5%Added
Millennium Management LLC1,622,022$19.3M0.02%+1,588,632+4,757.8%Added
Telemark Asset Management, LLC1,892,424$22.5M2.24%+400,000+26.8%Added
Dimensional Fund Advisors LP2,018,631$24.0M0.01%+409,862+25.5%Added
Needham Investment Management LLC2,389,700$28.4M2.19%+117,500+5.2%Added
George Kaiser Family Foundation3,167,322$37.6M5.54%00.0%Unchanged
Oaktop Capital Management II, L.P.3,740,525$44.4M5.55%+200,000+5.6%Added
Vanguard Group Inc4,360,246$51.8M0.00%+226,251+5.5%Added
BlackRock, Inc.5,001,205$59.4M0.00%+336,880+7.2%Added
Kim, LLC12,280,426$145.9M20.68%00.0%Unchanged
Driehaus Capital Management LLC0$00.00%−2,550,857−100.0%Sold out
Encompass Capital Advisors LLC0$00.00%−1,703,151−100.0%Sold out
Loomis Sayles & Co L P0$00.00%−1,619,320−100.0%Sold out
Macquarie Group Ltd0$00.00%−550,018−100.0%Sold out
Lord, Abbett & Co. LLC0$00.00%−365,701−100.0%Sold out
Gilder Gagnon Howe & Co LLC0$00.00%−279,754−100.0%Sold out
Silvercrest Asset Management Group LLC0$00.00%−193,284−100.0%Sold out
Castleark Management LLC0$00.00%−177,874−100.0%Sold out
Hillsdale Investment Management Inc.0$00.00%−129,460−100.0%Sold out
Black Swift Group, LLC0$00.00%−106,500−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−106,133−100.0%Sold out
Seven Eight Capital, LP0$00.00%−91,423−100.0%Sold out
Healthcare of Ontario Pension Plan Trust Fund0$00.00%−88,714−100.0%Sold out
Alberta Investment Management Corp0$00.00%−85,106−100.0%Sold out
EAM Investors, LLC0$00.00%−81,034−100.0%Sold out
Strategic Wealth Partners, Ltd.0$00.00%−75,182−100.0%Sold out
Redwood Investments, LLC0$00.00%−55,907−100.0%Sold out
Peregrine Asset Advisers, Inc.0$00.00%−54,897−100.0%Sold out
Options Solutions, LLC0$00.00%−50,809−100.0%Sold out
Formula Growth Ltd0$00.00%−50,000−100.0%Sold out
Penserra Capital Management LLC0$00.00%−48,482−100.0%Sold out
D.A. Davidson & Co.0$00.00%−42,692−100.0%Sold out
Shelton Wealth Management, LLC0$00.00%−42,640−100.0%Sold out
Harbour Capital Advisors, LLC0$00.00%−43,525−100.0%Sold out
Dakota Wealth Management0$00.00%−35,609−100.0%Sold out
Harvest Investment Services, LLC0$00.00%−32,105−100.0%Sold out
Virtu Financial LLC0$00.00%−30,034−100.0%Sold out
Davy Global Fund Management Ltd0$00.00%−29,131−100.0%Sold out
Churchill Management Corp0$00.00%−28,941−100.0%Sold out
Numerai GP LLC0$00.00%−23,333−100.0%Sold out
D. E. Shaw & Co., Inc.0$00.00%−22,465−100.0%Sold out
AMH Equity Ltd0$00.00%−20,000−100.0%Sold out
Mariner, LLC0$00.00%−16,404−100.0%Sold out
Convergence Investment Partners, LLC0$00.00%−15,257−100.0%Sold out
Y-Intercept (Hong Kong) Ltd0$00.00%−15,175−100.0%Sold out
AQR Capital Management LLC0$00.00%−14,659−100.0%Sold out
Cornerstone Investment Partners, LLC0$00.00%−13,965−100.0%Sold out
SG Americas Securities, LLC0$00.00%−13,700−100.0%Sold out
Walleye Trading LLC0$00.00%−13,607−100.0%Sold out
Petrus Trust Company, LTA0$00.00%−13,426−100.0%Sold out
Precision Wealth Strategies, LLC0$00.00%−12,551−100.0%Sold out
Baader Bank INC0$00.00%−12,291−100.0%Sold out
Gotham Asset Management, LLC0$00.00%−10,606−100.0%Sold out
Independent Financial Group, LLC0$00.00%−10,308−100.0%Sold out
Sigma Planning Corp0$00.00%−9,880−100.0%Sold out
Victory Capital Management Inc0$00.00%−9,604−100.0%Sold out
Pictet Asset Management Holding SA0$00.00%−9,156−100.0%Sold out
NorthCrest Asset Manangement, LLC0$00.00%−9,103−100.0%Sold out
Mesirow Financial Investment Management, Inc.0$00.00%−9,100−100.0%Sold out
HighPoint Advisor Group LLC0$00.00%−13,850−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−7,857−100.0%Sold out
HSBC Holdings PLC0$00.00%−7,275−100.0%Sold out
Venture Visionary Partners LLC0$00.00%−6,767−100.0%Sold out
nVerses Capital, LLC0$00.00%−5,800−100.0%Sold out
Catalyst Funds Management Pty Ltd0$00.00%−4,400−100.0%Sold out
Quent Capital, LLC0$00.00%−4,149−100.0%Sold out
KBC Group NV0$00.00%−1,764−100.0%Sold out
The PNC Financial Services Group, Inc.0$00.00%−1,029−100.0%Sold out
Umb Bank N A0$00.00%−865−100.0%Sold out
Picton Mahoney Asset Management0$00.00%−580−100.0%Sold out
Planned Solutions, Inc.0$00.00%−500−100.0%Sold out
Venturi Wealth Management, LLC0$00.00%−300−100.0%Sold out
NVWM, LLC0$00.00%−192−100.0%Sold out
Ronald Blue Trust, Inc.0$00.00%−30−100.0%Sold out
Bell Investment Advisors, Inc0$00.00%−23−100.0%Sold out
C M Bidwell & Associates Ltd0$00.00%−22−100.0%Sold out
Parallel Advisors, LLC0$00.00%−22−100.0%Sold out
Capital Performance Advisors LLP0$00.00%−15−100.0%Sold out
Creekmur Asset Management LLC0$00.00%−3−100.0%Sold out