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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.

Q4 2025 vs. Q3 2025

How the institutions holding Aspen Aerogels Inc changed between Q3 2025 and Q4 2025.

All holders in Q4 2025All holders in Q3 2025

13F holders of ASPN: Q3 2025 compared with Q4 2025
MeasureQ3 2025Of which not filed for Q4 2025Q4 2025Change
Holders2045183−16
Shares71.4M243.4K70.1M−1.02M (−1.4%)
Value$496.8M$1.70M$199.0M−$296.1M (−59.8%)

5 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (42)

Institutions that held Aspen Aerogels Inc at the end of Q4 2025 but not at the end of Q3 2025.

Institutions new to ASPN in Q4 2025
InstitutionSharesValue% of portfolio
Ameriprise Financial Inc1,378,284$3.90M0.00%
FirstWave Capital Management LLC372,001$1.05M0.63%
Healthcare of Ontario Pension Plan Trust Fund157,400$445.4K0.00%
Jacobs Levy Equity Management, Inc140,113$396.5K0.00%
Engineers Gate Manager LP119,227$337.4K0.00%
Dynamic Technology Lab Private Ltd103,281$292.0K0.07%
RBF Capital, LLC100,000$283.0K0.01%
Assenagon Asset Management S.A.97,002$274.5K0.00%
Jain Global LLC87,835$248.6K0.00%
WJ Financial Advisors LLC64,815$183.4K0.16%
Aristides Capital LLC62,400$176.6K0.06%
Acadian Asset Management LLC43,842$122.0K0.00%
Odyssean, LLC41,759$118.2K0.08%
PharVision Advisers, LLC33,808$95.7K0.05%
Lighthouse Investment Partners, LLC30,000$84.9K0.00%
Concurrent Investment Advisors, LLC30,000$84.9K0.00%
Journey Strategic Wealth LLC25,157$71.2K0.00%
Oxford Asset Management LLP24,083$68.2K0.02%
HSBC Holdings PLC23,326$66.0K0.00%
Centiva Capital, LP21,247$60.1K0.00%
Schonfeld Strategic Advisors LLC20,350$57.6K0.00%
RSM US Wealth Management LLC16,828$49.6K0.00%
Two Sigma Securities, LLC16,005$45.3K0.01%
StoneX Group Inc.14,474$41.0K0.00%
Group One Trading, L.P.14,257$40.3K0.00%
Winton Group Ltd14,200$40.2K0.00%
Canada Pension Plan Investment Board11,900$33.7K0.00%
Jefferson Bridge Capital, LLC11,450$32.4K0.03%
Drive Wealth Management, LLC10,655$30.2K0.01%
Caitong International Asset Management Co., Ltd10,586$30.0K0.01%
Balance Wealth, LLC10,297$29.1K0.01%
Quaker Wealth Management, LLC8,472$24.0K0.01%
Strategic Investment Solutions, Inc.7,010$19.8K0.00%
Gunpowder Capital Management, LLC dba Oliver Wealth Management3,863$10.9K0.01%
Performa Ltd (US), LLC3,250$9.20K0.00%
Walleye Capital LLC834$2.36K0.00%
Bessemer Group Inc730$2.00K0.00%
Rachor Investment Advisory Services, LLC690$1.95K0.00%
Stone House Investment Management, LLC405$1.15K0.00%
Basecamp Wealth Advisors LLC108$3060.00%
Sunbelt Securities, Inc.63$1780.00%
True Wealth Design, LLC18$510.00%

Sold out (58)

Institutions that held Aspen Aerogels Inc at the end of Q3 2025 and filed for Q4 2025 without it.

Institutions that sold out of ASPN in Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Penn Capital Management Co Inc1,036,995$7.23M
Peregrine Investment Management Inc600,000$4.18M
Gagnon Advisors, LLC565,570$3.94M
Essex Investment Management Co LLC390,033$2.71M
Trexquant Investment LP260,157$1.81M
Renaissance Technologies LLC246,900$1.72M
Point72 Asset Management, L.P.184,300$1.28M
HRT Financial LP167,423$1.17M
CastleKnight Management LP162,599$1.13M
Qube Research & Technologies Ltd126,275$878.9K
Squarepoint Ops LLC90,850$632.3K
Atom Investors LP82,648$575.2K
Man Group plc80,197$558.2K
Counterpoint Mutual Funds LLC71,595$498.3K
Harbour Capital Advisors, LLC58,675$472.9K
Brevan Howard Capital Management LP55,400$385.6K
Capital Fund Management S.A.49,750$346.3K
Perigon Wealth Management, LLC49,321$343.3K
Franklin Resources Inc46,754$325.4K
Sanders Morris Harris LLC40,000$278.4K
Versor Investments LP39,300$273.5K
Fox Run Management, L.L.C.36,181$251.8K
Universal- Beteiligungs- und Servicegesellschaft mbH35,123$244.5K
Raymond James Financial Inc34,787$242.1K
Quantinno Capital Management LP23,269$162.0K
Entropy Technologies, LP23,221$161.6K
Creative Planning21,948$152.8K
Sender Co & Partners, Inc.21,588$150.3K
DGS Capital Management, LLC20,153$140.3K
TCG Advisory Services, LLC16,940$117.9K
Atomi Financial Group, Inc.15,003$104.4K
Penbrook Management LLC14,180$98.7K
Caxton Associates LLP13,654$95.0K
Probity Advisors, Inc.11,938$83.1K
Commonwealth Equity Services, LLC11,352$79.0K
HighTower Advisors, LLC10,847$75.5K
Occudo Quantitative Strategies LP10,398$72.4K
SRS Capital Advisors, Inc.10,324$71.9K
Omers Administration Corp10,300$71.7K
Prelude Capital Management, LLC10,109$70.4K
Keebeck Alpha, LP10,109$70.4K
Nisa Investment Advisors, LLC4,866$33.9K
FNY Investment Advisers, LLC3,412$23.0K
Stance Capital LLC2,733$19.0K
Wealthspire Advisors, LLC1,355$9.43K
Versant Capital Management, Inc1,322$9.20K
Clear Street Markets LLC975$6.79K
Huntington National Bank735$5.12K
BNP PARIBAS ASSET MANAGEMENT Holding S.A.777$5.00K
EverSource Wealth Advisors, LLC641$4.46K
Stephens Consulting, LLC486$3.38K
Bogart Wealth, LLC375$2.61K
Kilter Group LLC180$1.25K
TD Private Client Wealth LLC98$682
Ronald Blue Trust, Inc.88$612
Hughes Financial Services, LLC72$264
Advisory Services Network, LLC25$174
Clearstead Advisors, LLC20$140

Not filed for Q4 2025 yet (5)

Institutions that held Aspen Aerogels Inc at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ASPN in Q3 2025 that haven't filed for Q4 2025
InstitutionShares, Q3 2025Value, Q3 2025
Cubist Systematic Strategies, LLC176,010$1.23M
Wolverine Trading, LLC49,356$349.4K
Point72 Asia (Singapore) Pte. Ltd.12,546$87.3K
Point72 (DIFC) Ltd3,938$27.4K
Point72 Europe (London) LLP1,573$10.9K