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Disclosery

HBIO HARVARD BIOSCIENCE INC

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CMN (common), issuer CIK 1123494

33 managers (35 13F filers) reported a position in HBIO shares at 2026-06-30, 1,353,415 shares in all. 4 filers opened a position and 2 filers sold out during the quarter.

Managers
33
13F filers
35
New
4
Added
3
Reduced
16
Sold out
2
Shares held by filers
1,353,415

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
WEBER CAPITAL MANAGEMENT LLC /ADV310,861$1.91M1.63%-9,17613F-HRTimeline
VANGUARD GROUP INCgroup of 3 filers holding198,576$1.22M+6,312Timeline
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC179,614$1.1M<0.01%013F-HRTimelineGroup
CORSAIR CAPITAL MANAGEMENT, L.P.122,810$755K0.1%-2,00013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP114,545$704K<0.01%+42813F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC99,327$611K<0.01%-2,10013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.61,834$380K<0.01%-39213F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC47,555$293K<0.01%-11,95613F-HRTimelineGroup
Mink Brook Asset Management LLCin group Mink Brook Asset Management L…33,369$205K0.09%new13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC32,620$201K<0.01%-13,71213F-HRTimelineGroup
ESSEX INVESTMENT MANAGEMENT CO LLC26,973$166K0.02%-4813F-HRTimeline
Williams & Novak, LLC20,949$129K0.09%-6,10313F-HRTimeline
UBS Group AGin group UBS Group AG17,581$108K<0.01%+9,17613F-HRTimelineGroup
RBF Capital, LLC16,000$98.4K<0.01%013F-HRTimeline
STATE STREET CORPin group STATE STREET CORP14,932$91.8K<0.01%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC13,982$86K<0.01%-9,84813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC13,251$81.5K<0.01%new13F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC10,657$65.5K<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp10,230$62.9K<0.01%013F-HRTimelineGroup
FMR LLCin group FMR LLC3,179$19.6K<0.01%-9513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,627$10K<0.01%-113F-HRTimelineGroup
SBI Securities Co., Ltd.866$5.33K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…580$3.57K<0.01%-57213F-HRTimelineGroup
Brown Shipley& Co Ltd478$2.94K<0.01%013F-HRTimeline
GROUP ONE TRADING LLC240$1.48K<0.01%-1,94213F-HRTimeline
NISA INVESTMENT ADVISORS, LLC228$1.4K<0.01%013F-HRTimeline
PENSION & WEALTH MANAGEMENT ADVISORS, I…225$1.38K<0.01%013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO195$1.19K<0.01%-4,26813F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS66$406<0.01%-213F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC26$160<0.01%new13F-HRTimelineGroup
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…14$86<0.01%013F-HRTimelineGroup
SHP Wealth Management10$62<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA15$00%-84013F-HRTimelineGroupValue filed as zero, left out of ratios.