13F

Stock

Aspen Aerogels Inc

ASPN · held by 165 managers

Reported value

$232.2M

Holders

165

+29 new · −49 exited

Holders’ est. mark

$32.4M

Price effect on 131 books still in the name

Largest holder

$42M

KIM, LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
KIM, LLC12.3M$42M$7.25MAdded$7.25M
OAKTOP CAPITAL MANAGEMENT II, L.P.5.17M$17.7M$2.59MAdded$5.24M
BlackRock, Inc.4.74M$16.2M$2.8MAdded$2.27M
NEEDHAM INVESTMENT MANAGEMENT LLC4.52M$15.5M$2.57MAdded$3.14M
VANGUARD CAPITAL MANAGEMENT LLC3.44M$11.8MHeld
George Kaiser Family Foundation3.17M$10.8M$1.87MAdded$1.87M
State Street2.32M$7.94M$1.37MAdded$857.7K
Invesco Ltd.2.3M$7.86M$1.36MCut−$3.83M
GAGNON SECURITIES LLC1.86M$6.37M$668.6KAdded$3.16M
RICE HALL JAMES & ASSOCIATES, LLC1.55M$5.31M$838.7KAdded$1.29M
GEODE CAPITAL MANAGEMENT, LLC1.54M$5.27M$909.7KAdded$736.2K
AMERIPRISE FINANCIAL INC1.51M$5.15M$813.2KAdded$1.25M
MILLENNIUM MANAGEMENT LLC1.4M$4.8M$513.9KAdded$2.34M
MARSHALL WACE, LLP1.26M$4.32M$327KAdded$2.75M
DIMENSIONAL FUND ADVISORS LP1.26M$4.3M$739.8KCut−$1.38M
AMERICAN CENTURY COMPANIES INC1.25M$4.27M$683.2KAdded$990.3K
JACOBS LEVY EQUITY MANAGEMENT, INC1.22M$4.17M$82.7KAdded$3.77M
Telemark Asset Management, LLC1M$3.42M$590KAdded$590K
ROYCE & ASSOCIATES LP986.5K$3.37MNew
GOLDMAN SACHS GROUP INC899.5K$3.08M$530.7KCut−$588.3K
JPMORGAN CHASE & CO965.5K$3.06M$328.3KCut−$1.14M
D. E. Shaw & Co., Inc.833.6K$2.85M$13.7KAdded$2.79M
VANGUARD PORTFOLIO MANAGEMENT LLC716.7K$2.45MHeld
BNP PARIBAS FINANCIAL MARKETS697.9K$2.39M$407.8KAdded$430.6K
Samjo Management, LLC645.6K$2.21M$380.9KCut−$51.8K
Citadel581.2K$1.99M$342.9KCut−$463.7K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC556.7K$1.9M$318.8KAdded$374.9K
Icahn Capital526.1K$1.8M$218.3KAdded$752.4K
NORTHERN TRUST CORP523.4K$1.79M$308.8KAdded$264.3K
VANGUARD FIDUCIARY TRUST CO454.4K$1.55MHeld
FEDERATED HERMES, INC.450K$1.54M$265.5KCut−$58.4K
Palogic Value Management, L.P.450K$1.54M$265.5KAdded$53.3K
TWO SIGMA INVESTMENTS, LP441.4K$1.51M$260.4KCut−$633.8K
DEUTSCHE BANK AG\359.5K$1.23M$131.6KAdded$598.3K
SUSQUEHANNA INTERNATIONAL GROUP, LLP274.3K$938.2K$112.8KAdded$397.1K
Point72 Asset Management, L.P.256.6K$877.6KNew
BANK OF AMERICA CORP /DE/241K$824.3K$142.2KCut−$1.31M
CITIGROUP INC233.7K$799.1K$137.9KAdded$123.8K
XTX Topco Ltd201.4K$688.7K$118.8KAdded$116.9K
UBS Group AG189.2K$647.2K$111.6KCut−$245.3K
MORGAN STANLEY188.3K$644K$111.1KCut−$339.8K
JANE STREET GROUP, LLC187.9K$642.5K$110.8KCut−$187.1K
Bank of New York Mellon Corp185.7K$635K$109.5KAdded$77.8K
FIRST TRUST ADVISORS LP181.2K$619.8K$106.9KAdded$63.5K
IRONWOOD INVESTMENT MANAGEMENT LLC166.6K$569.9K$75.2KAdded$209.2K
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND157.4K$538.3K$92.9KAdded$92.9K
TUDOR INVESTMENT CORP ET AL151.1K$516.7K$46.7KAdded$292.7K
Inspire Investing, LLC151K$516.4K$89.1KAdded$44.2K
Balyasny Asset Management L.P.149.4K$510.9KNew
Engineers Gate Manager LP148.2K$506.7K$70.3KAdded$169.3K
EntryPoint Capital, LLC146.7K$501.6K$65KAdded$189.9K
Man Group plc143.3K$490.2KNew
LAZARD ASSET MANAGEMENT LLC141.7K$484.8KNew
Nuveen, LLC134.7K$460.6K$79KAdded$81.7K
Mitsubishi UFJ Asset Management Co., Ltd.127.5K$436K$67.6KAdded$56K
Firsthand Capital Management, Inc.125K$427.5K$73.7KAdded$73.8K
ALPS ADVISORS INC124.4K$425.3K$68.7KAdded$96K
Dynamic Technology Lab Private Ltd121.7K$416.2K$61.2KAdded$124.2K
Sargent Investment Group, LLC116.5K$398.3K$68.7KCut−$2.46K
Russell Investments Group, Ltd.114.4K$391.2K$56.4KAdded$120.5K
HSBC HOLDINGS PLC105K$359.1K$13.8KAdded$293.1K
STATE OF WISCONSIN INVESTMENT BOARD102.7K$351.2K$60.6KAdded$10.9K
RBF Capital, LLC100K$342K$59KAdded$59K
Numerai GP LLC95.9K$328K$56.6KCut−$384.9K
RHUMBLINE ADVISERS84K$287.3K$49.6KAdded$34.5K
OPPENHEIMER & CO INC76.3K$260.9K$45KAdded$42.9K
BRIDGEWAY CAPITAL MANAGEMENT, LLC75K$256.5KNew
WJ Financial Advisors LLC63.9K$218.7K$37.7KAdded$35.3K
FRANKLIN RESOURCES INC63K$215.6KNew
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO62.7K$214.4KNew
Squarepoint Ops LLC59.8K$204.4KNew
ALLIANCEBERNSTEIN L.P.64.1K$181.4K$0Held
Graham Capital Management, L.P.52.4K$179.3K$30.9KCut−$270.2K
Odyssean, LLC41.8K$142.8K$24.6KAdded$24.6K
nVerses Capital, LLC40.5K$138.7KNew
LPL Financial LLC38.8K$132.9K$22.9KCut−$23K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.31.5K$107.9K$18.2KAdded$20.7K
Concurrent Investment Advisors, LLC30.1K$102.8K$17.7KAdded$17.9K
WELLS FARGO & COMPANY/MN28.6K$97.8K$16.9KCut−$134.8K
Vanguard Global Advisers, LLC28.6K$97.7KHeld
PANAGORA ASSET MANAGEMENT INC27.9K$95.4KNew
AXQ CAPITAL, LP26.6K$91.1KNew
CWM, LLC24.6K$84.2K$6.03KAdded$84.2K
CANADA PENSION PLAN INVESTMENT BOARD23.8K$81.4K$7.02KAdded$47.7K
IMC-Chicago, LLC22.5K$76.8K$13.3KCut−$214.4K
OSAIC HOLDINGS, INC.19.6K$67.1K$6.38KAdded$36.5K
INTECH INVESTMENT MANAGEMENT LLC18.6K$63.5K$11KCut−$8.29K
BARCLAYS PLC18.4K$63.1K$10.9KCut−$246.9K
MANUFACTURERS LIFE INSURANCE COMPANY, THE18.3K$62.6K$10.8KAdded$2.69K
CHOREO, LLC17.3K$59K$7.91KAdded$9.35K
Police & Firemen's Retirement System of New Jersey16.7K$57K$9.83KAdded$9.83K
NEW YORK STATE COMMON RETIREMENT FUND16.2K$55.5K$9.58KAdded$9.58K
Legato Capital Management LLC15.6K$53.2K$9.18KAdded$9.18K
BANK OF MONTREAL /CAN/15.4K$52.7KNew
MetLife Investment Management, LLC15.1K$51.7K$8.92KCut−$25.1K
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM14.6K$50K$8.63KAdded$8.63K
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC11K$40.7KNew
Brevan Howard Capital Management LP11.6K$39.7KNew
VOYA INVESTMENT MANAGEMENT LLC11.6K$39.7K$6.85KAdded$4.74K
Aptus Capital Advisors, LLC10.5K$36KNew
Clarus Group, Inc.10.5K$35.9KNew
PRUDENTIAL FINANCIAL INC10.2K$34.7KNew
Cerity Partners LLC10.2K$34.7KNew
Choate Investment Advisors10K$34.2K$5.9KAdded$5.9K
Cannell & Spears LLC10K$34.2K$5.9KAdded$5.9K
IFP Advisors, Inc8.9K$30.4K$5.25KCut−$1.53K
ROYAL BANK OF CANADA8.52K$29K$1.81KAdded$16K
Essential Partners LLC6.72K$23K$34Added$22.8K
Legal & General Group Plc6.04K$20.6K$3.56KCut−$169.3K
Strategic Investment Solutions, Inc. /IL6.01K$20.6K$3.55KAdded$715
Ameritas Investment Partners, Inc.5.71K$19.5K$3.37KAdded$3.37K
MAI Capital Management4.84K$16.6K$2.15KAdded$6.23K
Quantbot Technologies LP4.52K$15.5K$351Added$13.8K
Fidelity4.48K$15.3K$2.64KCut−$1.01K
SBI Securities Co., Ltd.4.36K$14.8K$2.45KCut−$6.92K
Optiver Holding B.V.4.21K$14.4K$2.48KCut−$2.72K
Banque Cantonale Vaudoise4.15K$14K$2.24KCut−$4K
Gunpowder Capital Management, LLC dba Oliver Wealth Management3.86K$13.2K$2.28KAdded$2.28K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM3.59K$12.3K$2.12KCut−$209.8K
Tower Research Capital LLC (TRC)3.36K$11.5K$1.98KCut−$1.92K
Aquatic Capital Management LLC3.1K$10.6KNew
SIMPLEX TRADING, LLC2.37K$8.12K$1.4KCut−$5.55K
Sterling Capital Management LLC2.19K$7.51K$1.3KCut−$2.49K
BOKF, NA2K$6.84K$1.18KAdded$1.18K
JONES FINANCIAL COMPANIES LLLP1.62K$5.35K$762Added$408
EverSource Wealth Advisors, LLC1.46K$5.01KNew
Rachor Investment Advisory Services, LLC1.18K$4.03K$407Added$2.07K
Allworth Financial LP1.11K$3.81K$247Added$2.63K
GGM Financials LLC1.01K$3.45K$596Added$596
NATIONAL BANK OF CANADA /FI/1K$3.42K$118Added$2.85K
Cornerstone Planning Group LLC750$3.1K$532Added$532
Larson Financial Group LLC904$3.09K$534Added$81
PlanVest Financial, Inc886$3.03KHeld
HRT FINANCIAL LP870.4K$2.98KNew
STANCE CAPITAL LLC811$2.77KNew
US BANCORP \DE\690$2.36K$408Added$269
GAMMA Investing LLC519$1.77K$306Cut−$874
NISA INVESTMENT ADVISORS, LLC450$1.54KNew
Stone House Investment Management, LLC405$1.39K$239Added$239
ALGERT GLOBAL LLC326.4K$1.12K$33Added$958
Caitong International Asset Management Co., Ltd323$1.1K$191Cut−$28.9K
Minot DeBlois Advisors LLC300$1.03K$177Added$177
ROTHSCHILD INVESTMENT LLC275$941$32Added$785
HighMark Wealth Management LLC250$855$148Added$148
Rockefeller Capital Management L.P.200$684$118Added$118
PNC Financial Services Group, Inc.178$609$34Added$451
Morse Asset Management, Inc175$599$104Added$104
Strategic Wealth Partners, Ltd.156$534$93Added$93
Wealth Preservation Advisors, LLC127$434New
Sunbelt Securities, Inc.119$407$37Added$229
PRICE T ROWE ASSOCIATES INC /MD/107.3K$367$57Added$88
Parkside Financial Bank & Trust80$274$47Added$47
Smartleaf Asset Management LLC85$269$18Added$18
Farther Finance Advisors, LLC61$212$40Cut−$14
Pinnacle Wealth Planning Services, Inc.57$195New
FIFTH THIRD BANCORP56$190New
Colonial Trust Advisors50$171$29Added$29
Quaker Wealth Management, LLC33$113$20Cut−$23.9K
Asset Planning,Inc25$86$15Added$15
True Wealth Design, LLC20$69$11Added$18
TD Waterhouse Canada Inc.15$52New
HARBOUR INVESTMENTS, INC.4$14New
First PREMIER Bank4K$14$3Added$3
State of Alaska, Department of Revenue3.38K$11$2Added$2
Covestor Ltd2.47K$8$1Added$1

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.