13F

Stock

Aspen Aerogels Inc

ASPN · held by 182 managers

Reported value

$197.6M

Holders

182

+2 new · −3 exited

Holders’ est. mark

−$5.33M

Price effect on 7 books still in the name

Largest holder

$34.8M

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$34.8MHeld
BlackRock, Inc.4.93M$13.9MHeld
Vanguard4.69M$13.3MHeld
OAKTOP CAPITAL MANAGEMENT II, L.P.4.39M$12.4MHeld
NEEDHAM INVESTMENT MANAGEMENT LLC4.35M$12.3MHeld
Invesco Ltd.4.13M$11.7MHeld
George Kaiser Family Foundation3.17M$8.96MHeld
State Street2.5M$7.08MHeld
DIMENSIONAL FUND ADVISORS LP2M$5.67MHeld
GEODE CAPITAL MANAGEMENT, LLC1.6M$4.53MHeld
JPMORGAN CHASE & CO1.48M$4.2MHeld
RICE HALL JAMES & ASSOCIATES, LLC1.42M$4.02MHeld
AMERIPRISE FINANCIAL INC1.38M$3.9MHeld
GOLDMAN SACHS GROUP INC1.29M$3.66MHeld
AMERICAN CENTURY COMPANIES INC1.16M$3.28MHeld
GAGNON SECURITIES LLC1.13M$3.21MHeld
Telemark Asset Management, LLC1M$2.83MHeld
MILLENNIUM MANAGEMENT LLC871K$2.46MHeld
Citadel866.2K$2.45MHeld
Samjo Management, LLC798.5K$2.26MHeld
TWO SIGMA INVESTMENTS, LP757.4K$2.14MHeld
BANK OF AMERICA CORP /DE/752.4K$2.13M−$3.11MCut−$3.54M
BNP PARIBAS FINANCIAL MARKETS691.3K$1.96MHeld
First Eagle Investment Management, LLC622.5K$1.76MHeld
FEDERATED HERMES, INC.564.5K$1.6MHeld
MARSHALL WACE, LLP554.2K$1.57MHeld
Jump Financial, LLC551.1K$1.56MHeld
CHARLES SCHWAB INVESTMENT MANAGEMENT INC540.3K$1.53MHeld
NORTHERN TRUST CORP539.2K$1.53MHeld
Palogic Value Management, L.P.525K$1.49MHeld
FirstWave Capital Management LLC372K$1.05MHeld
Icahn Capital369.9K$1.05MHeld
MORGAN STANLEY347.6K$983.8K−$1.44MCut−$3.85M
LOS ANGELES CAPITAL MANAGEMENT LLC118.7K$893.5KHeld
UBS Group AG315.3K$892.4KHeld
JANE STREET GROUP, LLC293.1K$829.6KHeld
Numerai GP LLC251.9K$712.8KHeld
CITIGROUP INC238.6K$675.3KHeld
DEUTSCHE BANK AG\223.1K$631.4KHeld
XTX Topco Ltd202K$571.7KHeld
Bank of New York Mellon Corp196.9K$557.2KHeld
FIRST TRUST ADVISORS LP196.6K$556.3KHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP191.2K$541.1KHeld
Inspire Investing, LLC166.9K$472.3KHeld
Graham Capital Management, L.P.158.8K$449.5KHeld
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND157.4K$445.4KHeld
Sargent Investment Group, LLC141.6K$400.7KHeld
JACOBS LEVY EQUITY MANAGEMENT, INC140.1K$396.5KHeld
Swiss National Bank135.2K$382.6KHeld
Mitsubishi UFJ Asset Management Co., Ltd.131.5K$379.9KHeld
Nuveen, LLC133.9K$378.8KHeld
IRONWOOD INVESTMENT MANAGEMENT LLC127.5K$360.7KHeld
Firsthand Capital Management, Inc.125K$353.8KHeld
STATE OF WISCONSIN INVESTMENT BOARD120.2K$340.3KHeld
Engineers Gate Manager LP119.2K$337.4KHeld
ALPS ADVISORS INC116.4K$329.3KHeld
EntryPoint Capital, LLC110.1K$311.7KHeld
BARCLAYS PLC109.5K$310K−$410.4KCut−$381.6K
TWO SIGMA ADVISERS, LP104.3K$295.2KHeld
Dynamic Technology Lab Private Ltd103.3K$292KHeld
IMC-Chicago, LLC102.9K$291.3KHeld
RBF Capital, LLC100K$283KHeld
Assenagon Asset Management S.A.97K$274.5KHeld
Verition Fund Management LLC97K$274.4KHeld
Russell Investments Group, Ltd.95.7K$270.7KHeld
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC94.6K$267.7KHeld
RHUMBLINE ADVISERS89.3K$252.8KHeld
Jain Global LLC87.8K$248.6KHeld
WELLS FARGO & COMPANY/MN82.2K$232.5KHeld
TUDOR INVESTMENT CORP ET AL79.2K$224.1K−$327KCut−$3.16M
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM78.5K$222KHeld
OPPENHEIMER & CO INC77K$218KHeld
Legal & General Group Plc67.1K$190KHeld
ExodusPoint Capital Management, LP65.5K$185.3KHeld
WJ Financial Advisors LLC64.8K$183.4KHeld
ALLIANCEBERNSTEIN L.P.64.1K$181.4KHeld
Aristides Capital LLC62.4K$176.6KHeld
CONNORS INVESTOR SERVICES INC55.2K$156.1KHeld
LPL Financial LLC55.1K$155.9KHeld
Odyssean, LLC41.8K$118.2KHeld
AWM Investment Company, Inc.41.1K$116.3KHeld
ARS Investment Partners, LLC40.8K$115.4KHeld
Caption Management, LLC36.1K$102.2KHeld
Quadrature Capital Ltd35.6K$100.7KHeld
PharVision Advisers, LLC33.8K$95.7KHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.30.8K$87.2KHeld
JANUS HENDERSON GROUP PLC30.5K$86.3KHeld
Concurrent Investment Advisors, LLC30K$84.9KHeld
Lighthouse Investment Partners, LLC30K$84.9KHeld
MetLife Investment Management, LLC27.2K$76.8KHeld
INTECH INVESTMENT MANAGEMENT LLC25.4K$71.8KHeld
JOURNEY STRATEGIC WEALTH LLC25.2K$71.2KHeld
OXFORD ASSET MANAGEMENT LLP24.1K$68.2KNew
HSBC HOLDINGS PLC23.3K$66KHeld
D. E. Shaw & Co., Inc.23.2K$65.7KHeld
Centiva Capital, LP21.2K$60.1KHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE21.2K$59.9KHeld
Schonfeld Strategic Advisors LLC20.4K$57.6KHeld
Voleon Capital Management LP19.7K$55.7KHeld
ARIZONA STATE RETIREMENT SYSTEM19.3K$54.7KHeld
AlphaQuest LLC18.2K$51.4KHeld
CHOREO, LLC16.8K$49.6KHeld
Police & Firemen's Retirement System of New Jersey16.7K$47.2KHeld
NEW YORK STATE COMMON RETIREMENT FUND16.2K$45.9KHeld
TWO SIGMA SECURITIES, LLC16K$45.3KHeld
Legato Capital Management LLC15.6K$44KHeld
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM14.6K$41.4KHeld
WOODMONT INVESTMENT COUNSEL LLC14.6K$41.3KHeld
StoneX Group Inc.14.5K$41KHeld
GROUP ONE TRADING LLC14.3K$40.3KHeld
WINTON GROUP Ltd14.2K$40.2KHeld
KLP KAPITALFORVALTNING AS13.8K$39.1KHeld
VOYA INVESTMENT MANAGEMENT LLC12.4K$35KHeld
ProShare Advisors LLC12.1K$34.3KHeld
CANADA PENSION PLAN INVESTMENT BOARD11.9K$33.7KHeld
Jefferson Bridge Capital, LLC11.4K$32.4KHeld
Baird Financial Group, Inc.11.3K$32.1KHeld
IFP Advisors, Inc11.3K$32K−$46.6KCut−$51.8K
OSAIC HOLDINGS, INC.10.8K$30.6KHeld
Zurcher Kantonalbank (Zurich Cantonalbank)10.7K$30.3KHeld
DRIVE WEALTH MANAGEMENT, LLC10.7K$30.2KHeld
Caitong International Asset Management Co., Ltd10.6K$30KHeld
Balance Wealth, LLC10.3K$29.1KHeld
Cannell & Spears LLC10K$28.3KHeld
Choate Investment Advisors10K$28.3KHeld
Quaker Wealth Management, LLC8.47K$24KHeld
SBI Securities Co., Ltd.7.67K$21.7KHeld
Strategic Investment Solutions, Inc. /IL7.01K$19.8KNew
Banque Cantonale Vaudoise6.36K$18KHeld
Optiver Holding B.V.6.05K$17.1KHeld
Fidelity5.77K$16.3KHeld
Ameritas Investment Partners, Inc.5.71K$16.2KHeld
SIMPLEX TRADING, LLC4.83K$13.7KHeld
Tower Research Capital LLC (TRC)4.73K$13.4KHeld
ROYAL BANK OF CANADA4.35K$13KHeld
Gunpowder Capital Management, LLC dba Oliver Wealth Management3.86K$10.9KHeld
MAI Capital Management3.65K$10.3KHeld
Sterling Capital Management LLC3.53K$10KHeld
Performa Ltd (US), LLC3.25K$9.2KHeld
Quarry LP2.67K$7.56KHeld
BOKF, NA2K$5.66KHeld
JONES FINANCIAL COMPANIES LLLP1.75K$4.94KHeld
Larson Financial Group LLC1.06K$3.01KHeld
GGM Financials LLC1.01K$2.86KHeld
GAMMA Investing LLC936$2.65KHeld
Cornerstone Planning Group LLC750$2.57KHeld
Walleye Capital LLC834$2.36KHeld
US BANCORP \DE\739$2.09KHeld
Rachor Investment Advisory Services, LLC690$1.95KHeld
Quantbot Technologies LP595$1.68KHeld
Allworth Financial LP419$1.19K−$1.73KCut−$4.72K
Stone House Investment Management, LLC405$1.15KHeld
Minot DeBlois Advisors LLC300$849Held
SG Americas Securities, LLC263.4K$745Held
HighMark Wealth Management LLC250$707Held
SIGNATUREFD, LLC234$662Held
NATIONAL BANK OF CANADA /FI/200$566Held
Rockefeller Capital Management L.P.200$566Held
Morse Asset Management, Inc175$495Held
Strategic Wealth Partners, Ltd.156$441Held
PRICE T ROWE ASSOCIATES INC /MD/98.3K$279Held
Smartleaf Asset Management LLC85$251Held
Parkside Financial Bank & Trust80$227Held
Farther Finance Advisors, LLC80$226Held
Sunbelt Securities, Inc.63$178Held
Essential Partners LLC56$158−$232Cut−$1.3K
ALGERT GLOBAL LLC55.8K$158Held
PNC Financial Services Group, Inc.56$158Held
ROTHSCHILD INVESTMENT LLC55$156Held
Colonial Trust Advisors50$142Held
ACADIAN ASSET MANAGEMENT LLC43.8K$122Held
COMERICA BANK28$78Held
Asset Planning,Inc25$71Held
True Wealth Design, LLC18$51Held
Janney Montgomery Scott LLC14.1K$40Held
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO6.09K$17Held
First PREMIER Bank4K$11Held
State of Alaska, Department of Revenue3.38K$9Held
Covestor Ltd2.46K$7Held
AMALGAMATED BANK2.08K$6Held
CWM, LLC1.76K$5Held
BESSEMER GROUP INC730$2Held

Who left

Positions as of Q4 2025. 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.