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

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.