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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, Q1 2025

Institutional positions in Aspen Aerogels Inc as of Mar 31, 2025. 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
221
−6 vs. Q4 2024
Shares held
71.3M
−665.8K (−0.9%) vs. Q4 2024
Total value
$455.4M
−$400.4M (−46.8%) vs. Q4 2024
New holders
45
83 more added
Sold out
51
66 more reduced

4 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 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 holdersQ1 2025: 221 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 heldQ1 2025: $455.4M
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, Q1 2025

Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q4 2024.

Institutions holding ASPN in Q1 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Hexagon Capital Partners LLC135$8630.00%+135New
Rothschild Investment LLC125$7990.00%+105+525.0%Added
EverSource Wealth Advisors, LLC123$7860.00%+108+720.0%Added
Colonial Trust Co108$6900.00%−95−46.8%Reduced
Quadrant Capital Group LLC105$6710.00%+86+452.6%Added
Cullen/Frost Bankers, Inc.103$6580.00%00.0%Unchanged
Assetmark, Inc100$6390.00%+100New
Caitong International Asset Management Co., Ltd84$5370.00%−3,106−97.4%Reduced
Smartleaf Asset Management LLC71$4670.00%−169−70.4%Reduced
Point72 Hong Kong Ltd56$3550.00%+56New
Colonial Trust Advisors50$3200.00%00.0%Unchanged
The PNC Financial Services Group, Inc.40$2560.00%+40New
Farther Finance Advisors, LLC36$2290.00%−145−80.1%Reduced
Asset Planning,Inc25$1600.00%00.0%Unchanged
CoreCap Advisors, LLC23$1470.00%+23New
TD Capital Management LLC22$1410.00%+22New
Federation des caisses Desjardins du Quebec15$960.00%−800−98.2%Reduced
Skopos Labs, Inc.5$320.00%−140−96.6%Reduced
Covestor Ltd6$00.00%00.0%Unchanged
Capital Advisors, Ltd. LLC24$00.00%+24New
Bouvel Investment Partners, LLC90,992––+26,629+41.4%Added
Point72 Asset Management, L.P.0$00.00%−1,104,549−100.0%Sold out
American Century Companies Inc0$00.00%−1,003,184−100.0%Sold out
UniSuper Management Pty Ltd0$00.00%−848,287−100.0%Sold out
Alyeska Investment Group, L.P.0$00.00%−800,000−100.0%Sold out
Federated Hermes, Inc.0$00.00%−630,500−100.0%Sold out
M&G Plc0$00.00%−511,314−100.0%Sold out
Caption Management, LLC0$00.00%−262,610−100.0%Sold out
Ardsley Advisory Partners LP0$00.00%−261,100−100.0%Sold out
Jump Financial, LLC0$00.00%−239,895−100.0%Sold out
Kennedy Capital Management, Inc.0$00.00%−224,475−100.0%Sold out
Engineers Gate Manager LP0$00.00%−155,087−100.0%Sold out
Aquatic Capital Management LLC0$00.00%−117,212−100.0%Sold out
DLD Asset Management, LP0$00.00%−104,253−100.0%Sold out
Walleye Capital LLC0$00.00%−80,805−100.0%Sold out
Storebrand Asset Management AS0$00.00%−68,846−100.0%Sold out
Wellington Management Group LLP0$00.00%−64,700−100.0%Sold out
GWM Advisors LLC0$00.00%−61,088−100.0%Sold out
Bayesian Capital Management, LP0$00.00%−53,909−100.0%Sold out
Lombard Odier Asset Management (USA) Corp0$00.00%−49,398−100.0%Sold out
Yorktown Management & Research Co Inc0$00.00%−44,100−100.0%Sold out
Point72 (DIFC) Ltd0$00.00%−39,237−100.0%Sold out
Fuller & Thaler Asset Management, Inc.0$00.00%−38,200−100.0%Sold out
Greenwood Capital Associates LLC0$00.00%−36,938−100.0%Sold out
Alpha DNA Investment Management LLC0$00.00%−36,860−100.0%Sold out
Connective Capital Management, LLC0$00.00%−36,475−100.0%Sold out
Corton Capital Inc.0$00.00%−29,277−100.0%Sold out
Toronto Dominion Bank0$00.00%−22,388−100.0%Sold out
Commonwealth Equity Services, LLC0$00.00%−22,192−100.0%Sold out
Talbot Financial, LLC0$00.00%−21,130−100.0%Sold out
Bridgefront Capital, LLC0$00.00%−20,427−100.0%Sold out
Allianz Asset Management GmbH0$00.00%−20,289−100.0%Sold out
Aigen Investment Management, LP0$00.00%−18,445−100.0%Sold out
Capula Management Ltd0$00.00%−17,523−100.0%Sold out
Cim, LLC0$00.00%−16,263−100.0%Sold out
Cambridge Investment Research Advisors, Inc.0$00.00%−15,792−100.0%Sold out
Bank of Montreal0$00.00%−12,953−100.0%Sold out
Wealth Enhancement Advisory Services, LLC0$00.00%−10,843−100.0%Sold out
Sandia Investment Management LP0$00.00%−7,500−100.0%Sold out
Leonteq Securities AG0$00.00%−2,948−100.0%Sold out
Stance Capital LLC0$00.00%−2,889−100.0%Sold out
Northwestern Mutual Wealth Management Co0$00.00%−2,779−100.0%Sold out
R Squared Ltd0$00.00%−2,050−100.0%Sold out
Coppell Advisory Solutions LLC0$00.00%−1,869−100.0%Sold out
Harel Insurance Investments & Financial Services Ltd.0$00.00%−1,597−100.0%Sold out
Kestra Investment Management, LLC0$00.00%−1,504−100.0%Sold out
Red Tortoise LLC0$00.00%−271−100.0%Sold out
FLP Wealth Management, LLC0$00.00%−201−100.0%Sold out
Lindbrook Capital, LLC0$00.00%−176−100.0%Sold out
Bessemer Group Inc0$00.00%−115−100.0%Sold out
MRP Capital Investments, LLC0$00.00%−25−100.0%Sold out
WealthTrak Capital Management LLC0$00.00%−10−100.0%Sold out
Nuveen Asset Management, LLC––––Not filed
Mesirow Institutional Investment Management, Inc.––––Not filed
Criterion Capital Advisors, LLC––––Not filed
WR Wealth Planners, LLC––––Not filed