Aspen AerogelsASPN

13F holders, Q2 2024 (June 30)
222holders +55
72new positions
18sold out
6famous investors
$23.90avg. 13F price*

At the end of Q2 2024, 222 institutions reported holding Aspen Aerogels Inc. (ASPN) in their 13F filings, up 55 from Q1 2024. 72 opened new positions and 18 sold out. The largest holders were Kim, LLC ($292.9M), BlackRock Inc. ($107.1M) and Vanguard Group Inc. ($95.8M). 6 famous investors held it, including Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).

Company
Aspen Aerogels Inc.
CUSIP
04523Y105
Latest filing quarter
Q2 2026

History

Number of 13F holders

050100150200250 Q1 2024: 167Q1 2024Q2 2024: 222Q2 2024Q3 2024: 243Q3 2024Q4 2024: 231Q4 2024Q1 2025: 221Q1 2025Q2 2025: 182Q2 2025Q3 2025: 204Q3 2025Q4 2025: 183Q4 2025Q1 2026: 166Q1 2026Q2 2026: 179Q2 2026

Total Exit/New Position Q1 2024 → Q2 2024

InstitutionsTotal Value
New Positions72$135.8M
Exits18$29.5M

All 13F filers, Q1 2024 → Q2 2024: 11,755,081 shares bought and 15,446,177 shares sold, net −3,691,096 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 222 holders

Kim, LLC 33.12% Reduce -22.2% 12,280,426 $292.9M
BlackRock Inc. 0.00% Add +10.6% 4,492,396 $107.1M
Vanguard Group Inc. 0.00% Add +10.9% 4,015,392 $95.8M
Oaktop Capital Management Ii, L.P. 8.16% No change 3,340,525 $79.7M
FMR LLC 0.01% Add +37.8% 3,277,249 $78.2M
George Kaiser Family Foundation 13.35% No change 3,167,322 $75.5M
Needham Investment Management LLC 4.51% Reduce -23.4% 2,299,729 $54.8M
Driehaus Capital Management LLC 0.50% Add +130.4% 2,156,789 $51.4M
Encompass Capital Advisors LLC 2.51% Reduce -10.6% 1,950,000 $46.5M
Hood River Capital Management LLC 0.87% Reduce -46.9% 1,752,519 $41.8M
Frontier Capital Management Co. LLC 0.41% Reduce -15.8% 1,745,361 $41.6M
Telemark Asset Management, LLC 3.22% No change 1,492,424 $35.6M
State Street Corp. 0.00% Add +1.4% 1,402,199 $33.4M
Dimensional Fund Advisors LP 0.01% Add +21.3% 1,374,631 $32.8M
Loomis Sayles & Co. L P 0.04% New 1,319,244 $31.5M
Geode Capital Management, LLC 0.00% Add +10.9% 1,310,944 $31.3M
Royce & Associates LP 0.28% Reduce -24.8% 1,239,267 $29.6M
AWM Investment Company, Inc. 3.83% Reduce -39.9% 1,188,202 $28.3M
Samjo Management, LLC 9.22% Reduce -37.4% 1,038,500 $24.8M
Federated Hermes, Inc. 0.06% Reduce -13.5% 998,600 $23.8M
UniSuper Management Pty Ltd 0.19% Reduce -11.8% 955,387 $22.8M
American Century Companies Inc. 0.01% Add +562.3% 770,729 $18.4M
Ameriprise Financial Inc. 0.00% Reduce -61.2% 640,377 $15.3M
Citadel Advisors 0.02% Add +1106.2% 630,556 $15.0M
D. E. Shaw & Co. 0.02% New 541,505 $12.9M
Morgan Stanley 0.00% Reduce -50.5% 539,187 $12.9M
Northern Trust Corp. 0.00% Add +0.2% 511,381 $12.2M
Nuveen Asset Management, LLC 0.00% Add +0.1% 471,719 $11.3M
Rice Hall James & Associates, LLC 0.64% Reduce -23.2% 446,402 $10.6M
Goldman Sachs Group Inc. 0.00% Add +103.1% 441,126 $10.5M
Mesirow Institutional Investment Management, Inc. 0.87% Reduce -37.2% 418,170 $10.0M
Two Sigma Investments, LP 0.02% New 405,749 $9.7M
Baird Financial Group, Inc. 0.02% Reduce -7.8% 401,359 $9.6M
Invesco Ltd. 0.00% Add +54.1% 395,724 $9.4M
Ardsley Advisory Partners LP 1.70% Reduce -54.3% 395,000 $9.4M
Millennium Management 0.01% New 391,563 $9.3M
Jane Street Group, LLC 0.01% Add +65.5% 355,983 $8.5M
Renaissance Technologies 0.01% New 349,700 $8.3M
Sargent Investment Group, LLC 1.54% Reduce -3.8% 317,539 $7.6M
Essex Investment Management Co. LLC 1.32% Reduce -23.4% 295,116 $7.0M
Deutsche Bank AG 0.00% Reduce -10.9% 292,725 $7.0M
Gilder Gagnon Howe & Co. LLC 0.09% New 285,652 $6.8M
Voloridge Investment Management, LLC 0.02% New 274,440 $6.5M
First Trust Advisors LP 0.01% Reduce -2.4% 273,808 $6.5M
Silvercrest Asset Management Group LLC 0.04% Reduce -47.5% 250,855 $6.0M
Assenagon Asset Management S.A. 0.01% Add +577.1% 244,512 $5.8M
State of Wisconsin Investment Board 0.02% Add +9.3% 238,591 $5.7M
Castleark Management LLC 0.22% Reduce -1.0% 228,164 $5.4M
Bank of New York Mellon Corp 0.00% Add +26.1% 226,666 $5.4M
Qube Research & Technologies Ltd 0.01% New 209,317 $5.0M
G2 Investment Partners Management LLC 1.23% Reduce -9.6% 198,917 $4.7M
Harvey Partners, LLC 0.54% Reduce -34.0% 183,000 $4.4M
Trexquant Investment LP 0.07% Add +75.0% 179,276 $4.3M
Alps Advisors Inc. 0.03% New 171,800 $4.1M
Fuller & Thaler Asset Management, Inc. 0.02% Reduce -35.9% 169,830 $4.1M
Charles Schwab Investment Management Inc. 0.00% Add +16.6% 167,177 $4.0M
Squarepoint Ops LLC 0.01% Reduce -4.2% 160,665 $3.8M
Cubist Systematic Strategies, LLC 0.07% New 160,088 $3.8M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% Add +172.8% 157,793 $3.8M
Hillsdale Investment Management Inc. 0.29% New 153,100 $3.7M
Susquehanna International Group, LLP 0.01% Reduce -27.2% 149,001 $3.6M
Firsthand Capital Management, Inc. 6.56% Reduce -85.7% 5,000 $3.4M
Twinbeech Capital LP 0.07% New 139,089 $3.3M
UBS Group AG 0.00% Reduce -55.4% 133,683 $3.2M
Redwood Grove Capital, LLC 0.99% No change 133,210 $3.2M
Swiss National Bank 0.00% No change 120,500 $2.9M
Bank of America Corp. 0.00% Reduce -50.9% 120,208 $2.9M
Kennedy Capital Management LLC 0.06% Reduce -35.8% 114,218 $2.7M
Seven Eight Capital, LP 0.26% New 105,294 $2.5M
BNP Paribas Financial Markets 0.00% Add +308.6% 105,021 $2.5M
Informed Momentum Co LLC 0.41% Reduce -48.6% 104,994 $2.5M
Comerica Bank 0.01% Reduce -7.7% 104,446 $2.5M
Intrinsic Edge Capital Management LLC 0.23% New 100,000 $2.4M
Bouvel Investment Partners, LLC 0.86% Reduce -0.5% 93,760 $2.2M
Tudor Investment Corporation 0.03% New 93,480 $2.2M
Rhumbline Advisers 0.00% Add +13.7% 93,226 $2.2M
Jump Financial, LLC 0.04% Add +687.6% 86,075 $2.1M
Marex Group Ltd 0.05% Reduce -19.1% 85,001 $2.0M
Healthcare of Ontario Pension Plan Trust Fund 0.01% Add +66.7% 80,591 $1.9M
Legato Capital Management LLC 0.26% Reduce -25.5% 79,877 $1.9M
Algert Global LLC 0.06% Add +57.8% 79,757 $1.9M
Black Swift Group, LLC 0.44% New 79,400 $1.9M
AQR Capital Management 0.00% Reduce -43.7% 78,715 $1.9M
Russell Investments Group, Ltd. 0.00% Add +169.7% 70,017 $1.7M
Walleye Capital LLC 0.02% New 69,338 $1.7M
Graham Capital Management, L.P. 0.10% Add +51.7% 66,917 $1.6M
Gsa Capital Partners LLP 0.11% Reduce -1.3% 66,211 $1.6M
PEAK6 Investments LLC 0.07% Add +90.0% 62,307 $1.5M
California State Teachers Retirement System 0.00% Reduce -0.7% 59,626 $1.4M
Legal & General Group Plc 0.00% Add +16.7% 58,455 $1.4M
Alliancebernstein L.P. 0.00% Add +13.2% 57,610 $1.4M
Boothbay Fund Management, LLC 0.04% Add +0.2% 53,505 $1.3M
NewEdge Advisors, LLC 0.01% New 53,074 $1.3M
Bridgewater Advisors Inc. 0.15% Add +31.7% 56,139 $1.2M
Sei Investments Co. 0.00% Reduce -41.4% 49,685 $1.2M
Allspring Global Investments Holdings, LLC 0.00% Reduce -44.3% 46,364 $1.1M
Redwood Investments, LLC 0.37% Reduce -50.6% 45,227 $1.1M
Bantamac Capital, LLC 0.63% Reduce -51.0% 43,876 $1.0M
D.A. Davidson & Co. 0.01% New 42,803 $1.0M
Harbour Capital Advisors, LLC 0.24% Add +79.8% 43,350 $1.0M
Aquatic Capital Management LLC 0.04% New 42,600 $1.0M
Wells Fargo & Company 0.00% Add +82.2% 42,511 $1.0M
Jackson Creek Investment Advisors LLC 0.36% Reduce -32.7% 41,589 $992K
Virtu Financial LLC 0.06% Add +179.1% 39,008 $930K
Engineers Gate Manager LP 0.02% New 38,987 $930K
Strategic Wealth Partners, Ltd. 0.10% Reduce -43.6% 38,904 $928K
Oppenheimer & Co. Inc. 0.01% Add +74.0% 38,381 $915K
Dynamic Technology Lab Private Ltd 0.10% New 37,456 $893K
Osaic Holdings, Inc. 0.00% Add +5.4% 37,318 $890K
Greenwood Capital Associates LLC 0.11% Reduce -74.4% 35,889 $856K
Simplex Trading, LLC 0.03% Add +692.5% 33,974 $810K
MetLife Investment Management, LLC 0.00% Add +27.0% 33,664 $803K
CHURCHILL MANAGEMENT Corp 0.01% New 33,580 $801K
Corebridge Financial, Inc. 0.00% — 31,345 $748K
Numerai GP LLC 0.27% New 31,063 $741K
HSBC Holdings PLC 0.00% New 30,670 $732K
Janus Henderson Group PLC 0.00% Reduce -1.3% 30,455 $726K
Formula Growth Ltd. 0.26% New 30,000 $716K
IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.08% Reduce -65.8% 29,131 $695K
Franklin Resources Inc. 0.00% Add +15.8% 27,935 $666K
Harvest Investment Services, LLC 0.26% New 27,403 $654K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% — 26,032 $621K
Manufacturers Life Insurance Company, The 0.00% Add +34.4% 26,003 $620K
Marshall Wace, LLP 0.00% New 25,900 $618K
ARS Investment Partners, LLC 0.06% Reduce -24.3% 25,484 $608K
Woodmont Investment Counsel LLC 0.05% Reduce -39.1% 25,350 $605K
Mitsubishi UFJ Asset Management Co., Ltd. 0.00% Reduce -57.9% 25,279 $603K
Abbot Financial Management, Inc. 0.32% Reduce -27.6% 25,216 $601K
JPMorgan Chase & Co. 0.00% Add +23.9% 24,900 $594K
New York State Common Retirement Fund 0.00% Reduce -93.5% 24,831 $592K
Sherbrooke Park Advisers LLC 0.10% New 22,876 $546K
T. Rowe Price Associates Inc. 0.00% Add +50.1% 21,886 $522K
Quantbot Technologies LP 0.02% New 21,450 $512K
Barclays PLC 0.00% Reduce -55.7% 21,278 $507K
O'Neil Global Advisors, Inc. 0.24% New 21,203 $506K
Tidal Investments LLC 0.01% New 21,056 $502K
Verition Fund Management LLC 0.00% New 20,367 $486K
Bayesian Capital Management, LP 0.06% New 20,274 $484K
OMERS ADMINISTRATION Corp 0.00% New 20,100 $479K
LPL Financial LLC 0.00% New 19,953 $476K
Voya Investment Management LLC 0.00% Reduce -97.6% 19,394 $463K
Fox Run Management, L.L.C. 0.09% New 19,100 $456K
Raymond James & Associates 0.00% New 18,717 $446K
Brevan Howard Capital Management LP 0.03% New 18,665 $445K
Arizona State Retirement System 0.00% Add +2.3% 17,170 $410K
Alpha DNA Investment Management LLC 0.23% New 16,686 $398K
Bank of Montreal 0.00% Reduce -0.6% 12,980 $398K
Crossmark Global Holdings, Inc. 0.01% No change 16,474 $393K
Cim, LLC 0.06% New 15,074 $386K
Citigroup Inc. 0.00% Reduce -60.0% 16,091 $384K
Cambridge Investment Research Advisors, Inc. 0.00% New 15,423 $368K
Two Sigma Advisers, LP 0.00% New 15,300 $365K
Mariner, LLC 0.00% Add +8.7% 15,263 $364K
JW Asset Management, LLC 0.15% New 15,000 $358K
Tower Research Capital LLC (TRC) 0.01% Add +2679.8% 14,622 $349K
State Board of Administration of Florida Retirement System 0.00% Add +3.5% 14,618 $349K
Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% Add +10.3% 14,310 $341K
Cetera Investment Advisers 0.00% New 13,856 $330K
Calamos Advisors LLC 0.00% New 13,739 $328K
Cornerstone Investment Partners, LLC 0.02% Reduce -7.6% 13,501 $322K
IMC-Chicago, LLC 0.01% New 13,501 $322K
Ballentine Partners, LLC 0.01% Add +2.0% 13,470 $321K
Royal Bank of Canada 0.00% Add +8.1% 12,968 $310K
Quadrature Capital Ltd 0.00% New 10,038 $239K
Choate Investment Advisors 0.01% No change 10,000 $239K
Aigen Investment Management, LP 0.05% New 9,783 $233K
Victory Capital Management Inc. 0.00% New 9,643 $230K
Bridgefront Capital, LLC 0.09% New 9,217 $220K
Pictet Asset Management Holding SA 0.00% New 9,156 $218K
NorthCrest Asset Manangement, LLC 0.01% New 9,104 $217K
Independent Financial Group, LLC 0.01% New 9,000 $215K
Perigon Wealth Management, LLC 0.01% New 8,766 $209K
Nebula Research & Development LLC 0.03% New 8,616 $205K
Public Employees Retirement Association of Colorado 0.00% New 6,088 $145K
Ameritas Investment Partners, Inc. 0.00% Add +13.7% 5,708 $136K
Point72 (DIFC) Ltd 0.01% New 5,064 $121K
nVerses Capital, LLC 0.06% New 4,000 $95K
First PREMIER Bank 0.03% No change 4,000 $95K
Point72 Hong Kong Ltd 0.01% New 3,515 $84K
Banque Cantonale Vaudoise 0.00% Reduce -28.9% 3,264 $78K
US Bancorp \de 0.00% Reduce -54.5% 3,046 $73K
Gen-Wealth Partners Inc 0.03% New 2,745 $65K
AlphaQuest LLC 0.01% Reduce -72.0% 2,036 $49K
Amalgamated Bank 0.00% No change 1,744 $42K
KBC Group NV 0.00% New 1,764 $42K
Harel Insurance Investments & Financial Services Ltd. 0.00% Reduce -60.3% 1,572 $37K
Exchange Traded Concepts, LLC 0.00% Add +100.0% 868 $21K
UMB Bank, n.a. 0.00% Reduce -27.9% 865 $21K
Quarry LP 0.01% New 819 $20K
Cwm, LLC 0.00% Add +109.9% 615 $15K
PNC Financial Services Group, Inc. 0.00% No change 600 $14K
Nisa Investment Advisors, LLC 0.00% Add +259.7% 446 $11K
Macroview Investment Management LLC 0.01% New 301 $7K
Venturi Wealth Management, LLC 0.00% No change 300 $7K
Wetzel Investment Advisors, Inc. 0.00% No change 400 $7K
IFP Advisors, Inc 0.00% No change 295 $7K
Signaturefd, LLC 0.00% No change 293 $7K
Red Tortoise LLC 0.00% No change 271 $6K
Arax Advisory Partners 0.00% New 267 $6K
GAMMA Investing LLC 0.00% Add +10.5% 263 $6K
HighMark Wealth Management LLC 0.00% No change 250 $6K
LRI Investments, LLC 0.00% New 204 $5K
Tyler-Stone Wealth Management 0.00% No change 200 $5K
HHM Wealth Advisors, LLC 0.00% No change 200 $5K
Lindbrook Capital, LLC 0.00% Add +9.7% 193 $5K
Colonial Trust Co / SC 0.00% Reduce -75.3% 180 $4K
Smartleaf Asset Management LLC 0.00% New 169 $4K
Farther Finance Advisors, LLC 0.00% Add +467.7% 176 $4K
Walleye Trading LLC 0.00% New 131 $3K
TD Waterhouse Canada Inc. 0.00% New 100 $2K
Valley National Advisers Inc. 0.00% No change 90 $2K
Colonial Trust Advisors 0.00% No change 50 $1K
Rothschild Investment LLC 0.00% Add +150.0% 25 $596
Innealta Capital, LLC 0.00% New 23 $549
C M Bidwell & Associates Ltd. 0.00% Reduce -31.3% 22 $525
Quadrant Capital Group LLC 0.00% No change 19 $454
Federation des caisses Desjardins du Quebec 0.00% No change 15 $358
WR Wealth Planners, LLC 0.00% No change 12 $286
Allworth Financial LP 0.00% New 8 $187
Criterion Capital Advisors, LLC 0.00% New 7 $167
TFC Financial Management, Inc. 0.00% No change 2 $48
Covestor Ltd 0.00% No change 6 $0

"% of holder's portfolio" is ASPN's weight in each manager's 13F, not the share of Aspen Aerogels Inc. the manager owns.