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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 2021

Institutional positions in Aspen Aerogels Inc as of Dec 31, 2021. 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
159
+29 vs. Q3 2021
Shares held
28.5M
+954.5K (+3.5%) vs. Q3 2021
Total value
$1.42B
+$152.1M (+12.0%) vs. Q3 2021
New holders
39
47 more added
Sold out
10
50 more reduced

Compare with Q3 2021: 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 2021: 159 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 2021: $1.42B
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 2021

Shares, value and share of portfolio for each institution holding Aspen Aerogels Inc; share changes are against Q3 2021.

Institutions holding ASPN in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Federated Hermes, Inc.46,727$2.33M0.00%−43,855−48.4%Reduced
Wells Fargo & Company48,165$2.40M0.00%−7,361−13.3%Reduced
Alyeska Investment Group, L.P.51,062$2.54M0.03%+51,062New
Sargent Investment Group, LLC51,441$2.56M0.58%+12,885+33.4%Added
EAM Global Investors LLC55,297$2.75M0.49%−29,450−34.8%Reduced
Morgan Stanley55,725$2.77M0.00%+10,642+23.6%Added
Charles Schwab Investment Management Inc57,622$2.87M0.00%+1,296+2.3%Added
Swiss National Bank58,200$2.90M0.00%+58,200New
Jetstream Capital LLC60,000$2.99M3.48%+60,000New
Advisory Research Inc63,282$3.15M0.25%+15,643+32.8%Added
Nuveen Asset Management, LLC63,480$3.29M0.00%−5,786−8.4%Reduced
Invenire Partners, LP67,544$3.36M3.56%+67,544New
Greenwood Capital Associates LLC72,729$3.62M0.51%−1,913−2.6%Reduced
EAM Investors, LLC73,008$3.63M0.60%−26,358−26.5%Reduced
Susquehanna International Group, LLP77,097$3.84M0.01%+3,424+4.6%Added
Harvey Partners, LLC80,000$3.98M1.80%−95,000−54.3%Reduced
Balyasny Asset Management LLC83,568$4.16M0.02%+83,568New
Gilder Gagnon Howe & Co LLC85,085$4.24M0.02%−340.0%Reduced
Bank of New York Mellon Corp88,512$4.41M0.00%−1,997−2.2%Reduced
HAP Trading, LLC90,145$4.49M0.31%+32,332+55.9%Added
UBS Group AG94,955$4.73M0.00%+11,452+13.7%Added
Trellus Management Company, LLC105,563$5.26M6.19%00.0%Unchanged
Citadel Advisors LLC122,683$6.11M0.01%+77,668+172.5%Added
Afton Capital Management LLC137,700$6.86M13.44%+137,700New
Russell Investments Group, Ltd.141,046$7.02M0.01%+65,527+86.8%Added
AMH Equity Ltd142,700$7.11M10.37%+142,700New
ExodusPoint Capital Management, LP143,150$7.13M0.09%+55,870+64.0%Added
Kennedy Capital Management, Inc.148,740$7.41M0.16%−12,779−7.9%Reduced
Silvercrest Asset Management Group LLC156,883$7.81M0.05%−52,943−25.2%Reduced
Zevenbergen Capital Investments LLC156,977$7.82M0.16%+60,315+62.4%Added
RK Capital Management, LLC165,900$8.26M1.50%−33,100−16.6%Reduced
Calamos Advisors LLC173,217$8.62M0.03%+48,959+39.4%Added
Granite Point Capital Management, L.P.197,213$9.82M3.82%00.0%Unchanged
Tygh Capital Management, Inc.198,242$9.87M1.26%−50,115−20.2%Reduced
Northern Trust Corp218,000$10.9M0.00%+10,188+4.9%Added
Cowen Prime Advisors LLC313,900$15.6M5.31%−62,850−16.7%Reduced
Collaborative Holdings Management LP320,700$16.0M6.55%−45,000−12.3%Reduced
Samjo Capital LLC330,000$16.4M11.01%−20,000−5.7%Reduced
Baird Financial Group, Inc.371,763$18.5M0.04%+471+0.1%Added
UBS Asset Management Americas Inc372,391$18.5M0.01%+8,188+2.2%Added
Price T Rowe Associates Inc375,968$18.7M0.00%−76,862−17.0%Reduced
Essex Investment Management Co LLC376,870$18.8M2.15%−102,175−21.3%Reduced
Geode Capital Management, LLC387,644$19.3M0.00%+4,634+1.2%Added
Encompass Capital Advisors LLC400,188$19.9M1.69%+400,188New
G2 Investment Partners Management LLC415,777$20.7M3.57%−19,876−4.6%Reduced
Next Century Growth Investors LLC416,609$20.7M1.87%−79,447−16.0%Reduced
Dimensional Fund Advisors LP420,135$20.9M0.01%+12,351+3.0%Added
Royce & Associates LP422,282$21.0M0.16%−74,570−15.0%Reduced
State Street Corp578,570$28.8M0.00%−113,856−16.4%Reduced
Needham Investment Management LLC694,000$34.6M4.34%−266,500−27.7%Reduced
FMR LLC732,756$36.5M0.00%+157,931+27.5%Added
Invesco Ltd.797,432$39.7M0.01%+436,343+120.8%Added
Driehaus Capital Management LLC1,375,091$68.5M0.70%+126,233+10.1%Added
BlackRock Inc.1,552,590$77.3M0.00%+144,291+10.2%Added
Vanguard Group Inc1,556,290$77.5M0.00%+155,733+11.1%Added
Telemark Asset Management, LLC1,840,000$91.6M6.55%−150,000−7.5%Reduced
Oaktop Capital Management II, L.P.2,939,758$146.4M17.65%00.0%Unchanged
George Kaiser Family Foundation3,167,322$157.7M22.62%00.0%Unchanged
Spring Creek Capital LLC3,462,124$172.4M6.56%00.0%Unchanged
Point72 Asset Management, L.P.0$00.00%−180,300−100.0%Sold out
Roubaix Capital, LLC0$00.00%−77,838−100.0%Sold out
Jump Financial, LLC0$00.00%−17,215−100.0%Sold out
Panagora Asset Management Inc0$00.00%−13,171−100.0%Sold out
Simplex Trading, LLC0$00.00%−11,568−100.0%Sold out
Paloma Partners Management Co0$00.00%−6,175−100.0%Sold out
Principal Financial Group Inc0$00.00%−4,668−100.0%Sold out
Point72 Hong Kong Ltd0$00.00%−2,538−100.0%Sold out
O'Shaughnessy Asset Management, LLC0$00.00%−1,054−100.0%Sold out
US Bancorp0$00.00%−48−100.0%Sold out