13F

Stock

Harvard Bioscience Inc

HBIO · held by 63 managers

Reported value

$10.5M

Holders

63

+0 new · −0 exited

Holders’ est. mark

$27K

Price effect on 4 books still in the name

Largest holder

$2.14M

WEBER CAPITAL MANAGEMENT LLC /ADV

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
WEBER CAPITAL MANAGEMENT LLC /ADV3.2M$2.14MHeld
Vanguard1.92M$1.29MHeld
Meros Investment Management, LP1.22M$814.4KHeld
CORSAIR CAPITAL MANAGEMENT, L.P.1.11M$741.5K$23KAdded$697.6K
Renaissance Technologies1.02M$683KHeld
TWO SIGMA INVESTMENTS, LP1.01M$677.1KHeld
TWO SIGMA ADVISERS, LP878.6K$587.6KHeld
BlackRock, Inc.622.3K$416.2KHeld
NANO CAP NEW MILLENNIUM GROWTH FUND L P600K$401.3KHeld
MILLENNIUM MANAGEMENT LLC546.1K$365.2KHeld
GEODE CAPITAL MANAGEMENT, LLC460.8K$308.2KHeld
JANE STREET GROUP, LLC415.2K$277.7KHeld
Portolan Capital Management, LLC409.6K$274KHeld
Williams & Novak, LLC348.8K$233.3KHeld
CITIGROUP INC193.8K$129.6KHeld
ESSEX INVESTMENT MANAGEMENT CO LLC184.7K$123.5KHeld
RBF Capital, LLC160K$107KHeld
State Street149.4K$99.9KHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP139.9K$93.5KHeld
Assenagon Asset Management S.A.139.2K$93.1KHeld
Bank of New York Mellon Corp126.2K$84.4KHeld
NORTHERN TRUST CORP92K$61.5KHeld
GAMCO INVESTORS, INC. ET AL57K$38.1KHeld
GOLDMAN SACHS GROUP INC49.8K$33.3KHeld
Pasadena Private Wealth, LLC45K$30.1KHeld
Legato Capital Management LLC43.5K$29.1KHeld
Citadel43K$28.8KHeld
XTX Topco Ltd39.3K$26.3KHeld
GABELLI FUNDS LLC39K$26.1KHeld
Fidelity32.9K$22KHeld
Callan Family Office, LLC29.8K$19.9KHeld
DIMENSIONAL FUND ADVISORS LP27.8K$18.6KHeld
GREENWOOD CAPITAL ASSOCIATES LLC27.8K$18.6KHeld
GROUP ONE TRADING LLC25.5K$17.1KHeld
Abel Hall, LLC25.3K$16.9KHeld
UBS Group AG21.2K$14.2KHeld
TWO SIGMA SECURITIES, LLC17.5K$11.7KHeld
Qube Research & Technologies Ltd17K$11.4KHeld
MORGAN STANLEY16.7K$11.2K$3.84KAdded$3.84K
Vanguard Personalized Indexing Management, LLC16.5K$11.1KHeld
Point72 Asset Management, L.P.14.7K$9.84KHeld
SIMPLEX TRADING, LLC13.8K$9.22KHeld
CERTUITY, LLC13.7K$9.15KHeld
GSK plc11.2K$7.46KHeld
Ethic Inc.10.9K$7.32KHeld
Balboa Wealth Partners10K$6.69KHeld
SBI Securities Co., Ltd.8.67K$5.8KHeld
Brown Shipley& Co Ltd4.78K$3.2KHeld
ROYAL BANK OF CANADA4.79K$3KHeld
Tower Research Capital LLC (TRC)2.4K$1.6KHeld
NISA INVESTMENT ADVISORS, LLC2.29K$1.53KHeld
JPMORGAN CHASE & CO1.96K$1.31KHeld
ACADIAN ASSET MANAGEMENT LLC1.77M$1.18KHeld
FEDERATED HERMES, INC.1.66K$1.11KHeld
BNP PARIBAS FINANCIAL MARKETS680$455Held
BANK OF AMERICA CORP /DE/451$301$102Added$108
PNC Financial Services Group, Inc.144$96Held
SHP Wealth Management100$67Held
Virtu Financial LLC59.5K$40Held
BARCLAYS PLC21$14$1Added$14
Optiver Holding B.V.14$9Held
Financial Connections Group, Inc.300$0Held
CWM, LLC54$0Held

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.