ASPEN AEROGELS INC

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ASPN·04523Y105·US·equity·Industrials - Building Products & Equipment-13D/G

ASPN (ASPEN AEROGELS INC) is held by 89 institutional investors as of Q1 2026. Largest holders: BlackRock, Inc. ($16.2M), STATE STREET CORP ($7.9M), Invesco Ltd. ($7.9M). Net institutional sentiment: Mixed.

89

Holders

Avg rating(6 Elite)

$106.2M

Total Value

43% (110)

Fund Consensus

45 buying - 59 selling

Smart Money Verdict

View all

52Mixed MomentumSplit Signals

Institutional (13F)57

Insider (Form 4)44

Activist (13D/13G)50

Congressional (STOCK Act)

No data

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See how ASPN's score breaks down across 4 SEC sources

Holder Quality

6

★★★★★

Elite

36

★★★★

Strong

32

★★★

Solid

27

★★

Below

9

★

Weak

Held by 89 funds

6 elite

Who's Trading

ActivistThe Vanguard Group0.0%Mar 26, 2026

ActivistNINEEDHAM INVESTMENT MANAGEMENT L.L.C.5.3%Feb 13, 2026

InsiderYRYoung Donald RSell $184KNov 13, 2025

InsiderUNUnknownSell $15KAug 13, 2025

InsiderDPDaniel Santhosh PSell $32KAug 12, 2025

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13F: Mar 31, 2026Insider & Congress: Updated regularly

Positions (89)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	4.7M(-3.8%)	$16.2M	0.0%	-53.33%	0
STATE STREET CORP	Decreased	2.3M(-7.2%)	$7.9M	0.0%	-49.94%	0
Invesco Ltd.	Decreased	2.3M(-44.4%)	$7.9M	0.0%	+36.90%	0
GEODE CAPITAL MANAGEMENT, LLC	Decreased	1.5M(-3.8%)	$5.3M	0.0%	-53.52%	0
AMERIPRISE FINANCIAL INC	Increased	1.5M(+9.3%)	$5.2M	0.0%	+87.72%	30
MILLENNIUM MANAGEMENT LLC	Increased	1.4M(+61.3%)	$4.8M	0.0%	-27.01%	39
MWMARSHALL WACE, LLP	Increased	1.3M(+127.9%)	$4.3M	0.0%	+30.38%	43
DIMENSIONAL FUND ADVISORS LP	Decreased	1.3M(-37.3%)	$4.3M	0.0%	-62.35%	0
AMERICAN CENTURY COMPANIES INC	Increased	1.2M(+7.8%)	$4.3M	0.0%	+23.80%	29
JACOBS LEVY EQUITY MANAGEMENT, INC	Increased	1.2M(+769.9%)	$4.2M	0.0%	+69.94%	43
ROYCE & ASSOCIATES LP	New	986,513	$3.4M	0.0%	+67.66%	37
GOLDMAN SACHS GROUP INC	Decreased	899,513(-30.5%)	$3.1M	0.0%	-29.51%	0
JPMORGAN CHASE & CO	Decreased	965,492(-34.9%)	$3.1M	0.0%	-12.12%	0
DED. E. Shaw & Co., Inc.	Increased	833,572(+3490.3%)	$2.9M	0.0%	+65.35%	42
BNP PARIBAS FINANCIAL MARKETS	Increased	697,932(+1.0%)	$2.4M	0.0%	-30.26%	26
CITADEL ADVISORS LLC	Decreased	581,187(-32.9%)	$2M	0.0%	-36.35%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	556,725(+3.0%)	$1.9M	0.0%	-70.97%	27
AQR CAPITAL MANAGEMENT LLC	Increased	526,119(+42.2%)	$1.8M	0.0%	+31.98%	35
NORTHERN TRUST CORP	Decreased	523,422(-2.9%)	$1.8M	0.0%	-47.59%	0
FEDERATED HERMES, INC.	Decreased	450,036(-20.3%)	$1.5M	0.0%	+25.70%	0

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Data sourced from four SEC data sources: 13F, Form 4, 13D/13G, and STOCK Act. Not financial advice. Full disclaimer