Aspen Aerogels Inc

ASPN

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

SEC filings (opens in a new tab)

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.

Q3 2021 vs. Q2 2021

How the institutions holding Aspen Aerogels Inc changed between Q2 2021 and Q3 2021.

All holders in Q3 2021 All holders in Q2 2021

13F holders of ASPN: Q2 2021 compared with Q3 2021
Measure	Q2 2021	Of which not filed for Q3 2021	Q3 2021	Change
Holders	115	1	130	+16
Shares	28.4M	459.2K	27.6M	−384.6K (−1.4%)
Value	$849.9M	$13.7M	$1.27B	+$432.3M (+51.7%)

1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (30)

Institutions that held Aspen Aerogels Inc at the end of Q3 2021 but not at the end of Q2 2021.

Institutions new to ASPN in Q3 2021
Institution	Shares	Value	% of portfolio
UBS Asset Management Americas Inc	364,203	$16.8M	0.01%
Calamos Advisors LLC	124,258	$5.72M	0.03%
Zevenbergen Capital Investments LLC	96,662	$4.45M	0.08%
Federated Hermes, Inc.	90,582	$4.17M	0.01%
ExodusPoint Capital Management, LP	87,280	$4.02M	0.06%
Gilder Gagnon Howe & Co LLC	85,119	$3.92M	0.02%
Russell Investments Group, Ltd.	75,519	$3.47M	0.01%
HAP Trading, LLC	57,813	$2.66M	0.20%
Advisory Research Inc	47,639	$2.19M	0.14%
Alliancebernstein L.P.	19,700	$906.0K	0.00%
SEI Investments Co	19,478	$896.0K	0.00%
HRT Financial LP	12,262	$564.0K	0.00%
Boothbay Fund Management, LLC	12,000	$552.0K	0.02%
Engineers Gate Manager LP	9,763	$449.0K	0.03%
Occudo Quantitative Strategies LP	8,014	$369.0K	0.04%
State of Wisconsin Investment Board	7,600	$350.0K	0.00%
Paloma Partners Management Co	6,175	$284.0K	0.01%
RBF Capital, LLC	5,000	$230.0K	0.01%
Two Sigma Advisers, LP	4,700	$216.0K	0.00%
Principal Financial Group Inc	4,668	$215.0K	0.00%
Point72 Hong Kong Ltd	2,538	$117.0K	0.01%
Quantbot Technologies LP	2,400	$110.0K	0.01%
STRS Ohio	1,100	$50.0K	0.00%
O'Shaughnessy Asset Management, LLC	1,054	$49.0K	0.00%
First Command Bank	900	$41.0K	0.01%
First Command Financial Services, Inc.	900	$41.0K	0.01%
Banque Cantonale Vaudoise	672	$31.0K	0.00%
TCI Wealth Advisors, Inc.	103	$5.00K	0.00%
US Bancorp	48	$2.00K	0.00%
Ellevest, Inc.	9	$0	0.00%

Sold out (14)

Institutions that held Aspen Aerogels Inc at the end of Q2 2021 and filed for Q3 2021 without it.

Institutions that sold out of ASPN in Q3 2021
Institution	Shares, Q2 2021	Value, Q2 2021
AIGH Capital Management LLC	655,819	$19.6M
Worth Venture Partners, LLC	146,687	$4.39M
Shay Capital LLC	74,294	$2.22M
Jefferies Group LLC	70,000	$2.09M
Ardsley Advisory Partners LP	50,500	$1.51M
Apis Capital Advisors, LLC	45,000	$1.35M
Nomura Holdings Inc	40,000	$1.19M
Bank of Montreal	45,001	$1.11M
PEAK6 Investments LLC	18,583	$556.0K
Appian Way Asset Management LP	17,900	$536.0K
Gsa Capital Partners LLP	11,239	$336.0K
SG3 Management, LLC	6,000	$180.0K
Parisi Gray Wealth Management	3,516	$105.0K
Pinz Capital Management, LP	900	$27.0K

Not filed for Q3 2021 yet (1)

Institutions that held Aspen Aerogels Inc at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding ASPN in Q2 2021 that haven't filed for Q3 2021
Institution	Shares, Q2 2021	Value, Q2 2021
Cowen Prime Services LLC	459,200	$13.7M