Aspen Aerogels Inc (ASPN) Ownership

5.47 ↓0.15 (-2.67%)

As of December 31, 1969, 7:00pm EST.

Institutions
Mutual Funds

Institutional Ownership

KIM, LLC is the biggest individual institutional holder of Aspen Aerogels Inc (ASPN), owning a total of 12.3 million shares. Combined, the top 46 institutional holders of ASPN own 102.53% of the company with a total of 81 million shares.

In the latest ownership report on December 31st 2024, the top 46 institutional holders increased their combined ownership of ASPN by 3.9 million shares. 14 institutions bought 7,535,493 total additional shares and increased their ownership by an average of 742.82%. However 4 institutions sold 3,599,361 total shares and decreased their ownership by an average of 31.68%.

Overall this is a positive sign as the number of shares owned by the top 20 institutional holders of Aspen Aerogels increased by a net total of 3,936,132 in the latest quarter.

Institution Ownership Chart

Latest Institutional Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
KIM, LLC	14.965%	0.000%	12,280,426	0	2024-12-31
BlackRock Inc	6.095%	7.223%	5,001,205	336,880	2024-12-31
Vanguard Group Inc	5.314%	5.473%	4,360,246	226,251	2024-12-31
OAKTOP CAPITAL MANAGEMENT II LP	4.558%	5.649%	3,740,525	200,000	2024-12-31
George Kaiser Family Foundation	3.860%	0.000%	3,167,322	0	2024-12-31
Needham Investment Management, LLC	2.912%	5.171%	2,389,700	117,500	2024-12-31
Dimensional Fund Advisors, Inc.	2.460%	25.477%	2,018,631	409,862	2024-12-31
Telemark Asset Management, LLC	2.306%	26.802%	1,892,424	400,000	2024-12-31
Millennium Management LLC	1.977%	4,757.810%	1,622,022	1,588,632	2024-12-31
State Street Corp	1.813%	5.453%	1,487,462	76,919	2024-12-31
Geode Capital Management, LLC	1.784%	5.642%	1,464,163	78,195	2024-12-31
Cubist Systematic Strategies, LLC	1.698%	0.000%	1,393,213	1,393,213	2024-12-31
FMR Inc	1.494%	-69.733%	1,226,073	-2,824,823	2024-12-31
Awm Investment Company Inc	1.473%	2.905%	1,208,686	34,115	2024-12-31
Point72 Asset Management, L.P.	1.346%	0.000%	1,104,549	1,104,549	2024-12-31
American Century Companies Inc	1.223%	-32.723%	1,003,184	-487,939	2024-12-31
Royce & Associates, LP	1.154%	-21.902%	946,623	-265,474	2024-12-31
Samjo Management LLC	1.066%	-2.358%	874,650	-21,125	2024-12-31
Alyeska Investment Group, L.P.	0.975%	0.000%	800,000	800,000	2024-12-31
Qube Research & Technologies	0.955%	5,551.860%	783,235	769,377	2024-12-31

Top Institutions

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
KIM, LLC	14.965%	0.000%	12,280,426	0	2024-12-31
BlackRock Inc	6.095%	7.223%	5,001,205	336,880	2024-12-31
Vanguard Group Inc	5.314%	5.473%	4,360,246	226,251	2024-12-31
OAKTOP CAPITAL MANAGEMENT II LP	4.558%	5.649%	3,740,525	200,000	2024-12-31
George Kaiser Family Foundation	3.860%	0.000%	3,167,322	0	2024-12-31
Samjo Capital, LLC	3.933%	73.276%	3,015,000	1,275,000	2023-09-30
Driehaus Capital Management LLC	3.109%	18.271%	2,550,857	394,068	2024-09-30
Needham Investment Management, LLC	2.912%	5.171%	2,389,700	117,500	2024-12-31
Dimensional Fund Advisors, Inc.	2.460%	25.477%	2,018,631	409,862	2024-12-31
Cowen Prime Advisors LLC	2.505%	14.681%	1,911,500	244,700	2023-06-30
Telemark Asset Management, LLC	2.306%	26.802%	1,892,424	400,000	2024-12-31
AIGH Capital Management, LLC	2.351%	2.994%	1,804,484	52,462	2023-12-31
Hood River Capital Management LLC	2.153%	-46.901%	1,752,519	-1,547,924	2024-06-30
Frontier Capital Management CO Inc	2.144%	-15.797%	1,745,361	-327,428	2024-06-30
Encompass Capital Advisors LLC	2.076%	-12.659%	1,703,151	-246,849	2024-09-30
Ameriprise Financial Inc	2.142%	-10.688%	1,650,950	-197,570	2024-03-31
Millennium Management LLC	1.977%	4,757.810%	1,622,022	1,588,632	2024-12-31
Loomis, Sayles & Company LP	1.974%	22.746%	1,619,320	300,076	2024-09-30
Ardsley Advisory Partners	2.024%	2.204%	1,545,000	33,322	2023-09-30
State Street Corp	1.813%	5.453%	1,487,462	76,919	2024-12-31
Geode Capital Management, LLC	1.784%	5.642%	1,464,163	78,195	2024-12-31
Cubist Systematic Strategies, LLC	1.698%	0.000%	1,393,213	1,393,213	2024-12-31
State Street Corporation	1.795%	7.667%	1,383,560	98,518	2024-03-31
FMR Inc	1.494%	-69.733%	1,226,073	-2,824,823	2024-12-31
Awm Investment Company Inc	1.473%	2.905%	1,208,686	34,115	2024-12-31
Point72 Asset Management, L.P.	1.346%	0.000%	1,104,549	1,104,549	2024-12-31
Essex Investment Management Company, LLC	1.440%	42.259%	1,011,471	300,464	2023-06-30
American Century Companies Inc	1.223%	-32.723%	1,003,184	-487,939	2024-12-31
AMH Equity Ltd	1.423%	0.000%	1,000,000	1,000,000	2023-06-30
Federated Hermes Inc	1.217%	0.000%	998,600	0	2024-09-30
J. Goldman & Co LP	1.390%	0.000%	974,466	974,466	2022-12-31
Royce & Associates, LP	1.154%	-21.902%	946,623	-265,474	2024-12-31
Marshall Wace Asset Management Ltd	1.309%	0.000%	918,605	918,605	2023-03-31
Samjo Management LLC	1.066%	-2.358%	874,650	-21,125	2024-12-31
Morgan Stanley - Brokerage Accounts	1.007%	-23.415%	825,877	-252,497	2024-09-30
Alyeska Investment Group, L.P.	0.975%	0.000%	800,000	800,000	2024-12-31
Penn Capital Management Company LLC	1.035%	3.257%	789,936	24,915	2023-09-30
Prescott Group Capital Management LLC	1.127%	0.000%	789,474	789,474	2022-12-31
Redwood Investments, LLC	1.118%	30.164%	784,545	181,809	2023-06-30
Qube Research & Technologies	0.955%	5,551.860%	783,235	769,377	2024-12-31
Nuveen Asset Management, LLC	0.903%	57.062%	740,892	269,173	2024-09-30
Yaupon Capital Management LP	0.957%	0.000%	669,938	669,938	2022-12-31
Arosa Capital Management LP	0.838%	0.000%	586,715	586,715	2022-12-31
Two Sigma Advisers, LLC	0.808%	24.773%	534,900	106,200	2022-09-30
Quinn Opportunity Partners LLC	1.170%	0.000%	478,426	478,426	2022-06-30
Two Sigma Investments LLC	1.155%	-14.623%	472,601	-80,946	2022-09-30

Mutual Fund Ownership

Vanguard Total Stock Mkt Idx Inv is the biggest individual fund holder of Aspen Aerogels Inc (ASPN), owning a total of 2.6 million shares. Combined, the top 53 mutual fund holders of ASPN own 43.55% of the company with a total of 34.2 million shares.

In the latest ownership report on February 28th 2025, the top 53 fund holders increased their combined ownership of ASPN by 395 thousand shares. 2 funds bought 419,004 total additional shares and increased their ownership by an average of 0.08%. However 3 funds sold 24,087 total shares and decreased their ownership by an average of 0.82%.

Overall this is a positive sign as the number of shares owned by the top 20 mutual funds holding Aspen Aerogels increased by a net total of 394,917 in the latest report.

Mutual Funds Chart

Latest Mutual Fund Ownership Changes

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Vanguard Total Stock Mkt Idx Inv	3.137%	0.000%	2,573,966	0	2025-02-28
iShares Russell 2000 ETF	1.940%	-1.161%	1,591,680	-18,688	2025-02-28
Vanguard Institutional Extnd Mkt Idx Tr	1.267%	0.151%	1,040,005	1,563	2025-02-28
iShares Russell 2000 Value ETF	0.546%	-0.752%	448,361	-3,399	2025-02-28
Penn Capital Small Cap Equity	0.509%	0.000%	417,441	417,441	2025-02-28
Columbia Small Cap Value I A	0.453%	-0.535%	372,003	-2,000	2025-02-28
State St Russell Sm/Mid Cp® Indx NL Cl C	0.425%	0.000%	348,912	0	2025-02-28

Top Mutual Funds

Owner	Percent Owned	Percent Change	Shares Owned	Share Change	Date Reported
Vanguard Total Stock Mkt Idx Inv	3.137%	0.000%	2,573,966	0	2025-02-28
Vanguard Instl Ttl Stck Mkt Idx Tr	2.915%	8.123%	2,047,939	153,858	2023-03-31
iShares Russell 2000 ETF	1.940%	-1.161%	1,591,680	-18,688	2025-02-28
Hood River Small-Cap Growth Instl	1.783%	-20.761%	1,451,233	-380,221	2024-06-30
Needham Aggressive Growth Retail	1.648%	5.253%	1,352,500	67,500	2024-12-31
Vanguard Institutional Extnd Mkt Idx Tr	1.267%	0.151%	1,040,005	1,563	2025-02-28
Loomis Sayles Small Cap Growth Instl	1.119%	-1.070%	918,283	-9,936	2024-11-30
Columbia Small Cap Growth Inst	1.129%	0.000%	866,290	0	2024-04-30
Columbia Small Cap Growth	1.129%	0.000%	866,290	866,290	2024-03-31
Vanguard Extended Market Index Investor	1.150%	0.922%	807,058	7,374	2023-08-31
American Century U.S. Small Cap Growth	0.965%	-18.979%	791,746	-185,462	2024-12-31
American Century Small Cap Growth Inv	0.965%	-18.979%	791,746	-185,462	2024-12-31
UBS: US Equity Small Cap Growth	0.876%	0.000%	718,487	718,487	2024-09-30
Fidelity Small Cap Growth	0.800%	0.000%	656,385	0	2024-10-31
Federated Hermes Kaufmann Small Cap Grow	0.768%	-36.862%	630,500	-368,100	2024-12-31
Federated Hermes Kaufmann Small Cap A	0.768%	-36.862%	630,500	-368,100	2024-12-31
FIAM Small Cap Core Composite	0.767%	0.000%	629,400	629,400	2024-09-30
Fidelity Small Cap Index	0.756%	4.495%	620,356	26,684	2024-12-31
FIAM Small Cap Core CIT Cl B	0.755%	3.372%	619,200	20,200	2024-12-31
VIP Growth Initial	0.740%	0.000%	564,802	0	2023-11-30
Fidelity® VIP Growth Initial	0.804%	0.000%	564,802	0	2023-09-30
JHancock Small Cap Growth NAV	0.750%	-0.771%	526,584	-4,091	2023-09-30
JHancock Small Cap Dynamic Growth NAV	0.750%	0.000%	526,584	0	2023-10-31
Frontier Small Cap Growth	0.678%	-3.260%	523,127	-17,630	2024-06-30
Fidelity® Capital Appreciation	0.680%	0.000%	519,300	0	2023-11-30
Fidelity Capital Appreciation	0.633%	0.000%	519,300	0	2024-10-31
Fidelity Advisor® Equity Growth I	0.669%	0.000%	510,800	0	2023-11-30
Fidelity Advisor Equity Growth I	0.622%	0.000%	509,972	0	2024-10-31
Needham Small Cap Growth Retail	0.609%	11.111%	500,000	50,000	2024-12-31
Fidelity® Small Cap Index	0.647%	2.757%	493,752	13,246	2023-10-31
Heptagon Driehaus US Micro Cap Eq C$ Acc	0.581%	1.746%	472,816	8,114	2024-09-30
Delaware Ivy Small Cap Growth C	0.567%	23.698%	465,196	89,122	2024-10-31
Macquarie Small Cap Growth C	0.567%	23.698%	465,196	89,122	2024-10-31
Fidelity VIP Growth Initial	0.567%	0.000%	465,102	0	2024-10-31
Voya Small Cap Growth I	0.592%	-21.246%	454,698	-122,664	2024-05-31
Royce Small-Cap Opportunity Invmt	0.592%	-0.621%	454,632	-2,839	2024-03-31
iShares Russell 2000 Value ETF	0.546%	-0.752%	448,361	-3,399	2025-02-28
ENETIA Energy Transition Fund A EURh	0.575%	0.000%	439,800	439,800	2023-08-31
Jupiter Merian Glb Eq AbsRet I USD Acc	0.565%	-28.445%	435,733	-173,218	2023-12-31
Penn Capital Small Cap Equity	0.509%	0.000%	417,441	417,441	2025-02-28
Royce Micro Cap Trust	0.506%	0.000%	414,856	0	2024-09-30
Needham Growth Retail	0.488%	0.000%	400,000	0	2024-12-31
iShares Russell 2000 Growth ETF	0.566%	-0.361%	397,079	-1,440	2023-06-21
CREF Stock R1	0.479%	0.000%	392,830	0	2024-12-31
Columbia Small Cap Value I	0.456%	7.719%	374,003	26,800	2025-01-31
Columbia Small Cap Value I A	0.453%	-0.535%	372,003	-2,000	2025-02-28
FIAM Small Cap Core Class B	0.560%	-2.345%	370,700	-8,900	2022-10-31
Fidelity Extended Market Index	0.448%	-1.496%	367,927	-5,589	2025-01-31
State St Russell Sm/Mid Cp® Indx NL Cl C	0.425%	0.000%	348,912	0	2025-02-28
Xtrackers S&P 500 Swap ETF 1C	0.446%	0.000%	312,537	0	2023-04-30
Vanguard Materials ETF	0.298%	0.789%	197,138	1,544	2022-12-31
Kennedy Extended Small Cap	0.274%	-2.479%	180,955	-4,599	2022-09-30
TIAA-CREF Quant Small-Cap Equity Instl	0.271%	-1.490%	179,190	-2,710	2022-11-30