HARVARD BIOSCIENCE INC

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HBIO·416906204·US·Common Stock-Activist

HBIO (HARVARD BIOSCIENCE INC) is held by 23 institutional investors as of Q2 2026. Largest holders: VANGUARD CAPITAL MANAGEMENT LLC ($1M), TWO SIGMA INVESTMENTS, LP ($704,452), RENAISSANCE TECHNOLOGIES LLC ($610,861). Net institutional sentiment: Bearish.

23

Holders

(2 Elite)

$3.9M

Total Value

32% (19)

Consensus

6 buying - 13 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)47

Insider (Form 4)52

Activist (13D/13G)35

Congressional (STOCK Act)83

Holder Quality

57

★★★★★

Elite

37

★★★★

Strong

65

★★★

Solid

23

★★

Below

54

★

Weak

Held by 23 funds

2 elite

Who's Trading

Source dates: Price Aug 28, 2026 · Insiders Jun 12, 2026 · Activists Mar 23, 2026 · Congress none

InsiderGEGagnon Robert E.Vest 17K shJun 9, 2026

InsiderSWSnider WilliamVest 17K shJun 9, 2026

InsiderEAEade Katherine A.Vest 17K shJun 9, 2026

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Top Holders

Top Holders (23)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	169,625(+3.9%)	$1M	0.0%	+61.26%	18
TWO SIGMA INVESTMENTS, LP	Increased	114,545(+0.4%)	$704,452	0.0%	+12.75%	25
RENAISSANCE TECHNOLOGIES LLC	Decreased	99,327(-2.1%)	$610,861	0.0%	-66.87%	0
BlackRock, Inc.	Decreased	61,834(-0.6%)	$380,280	0.0%	-62.38%	0
GEODE CAPITAL MANAGEMENT, LLC	Decreased	47,555(-20.1%)	$292,534	0.0%	-81.49%	0
MILLENNIUM MANAGEMENT LLC	Decreased	32,620(-29.6%)	$200,613	0.0%	+80.23%	0
VFVANGUARD FIDUCIARY TRUST CO	Unchanged	27,730	$170,540	0.0%	+62.83%	0
UBS Group AG	Increased	17,581(+109.2%)	$108,123	0.0%	+32.43%	24
STATE STREET CORP	Unchanged	14,932	$91,832	0.0%	-84.53%	0
JANE STREET GROUP, LLC	Decreased	13,982(-41.3%)	$85,989	0.0%	+15.31%	0
CITADEL ADVISORS LLC	New	13,251	$81,494	0.0%	+28.94%	33
GOLDMAN SACHS GROUP INC	New	10,657	$65,541	0.0%	+28.94%	32
Bank of New York Mellon Corp	Unchanged	10,230	$62,915	0.0%	-85.04%	0
FMR LLC	Decreased	3,179(-2.9%)	$19,551	0.0%	+34.34%	0
MORGAN STANLEY	Decreased	1,627(-0.1%)	$10,006	0.0%	-68.05%	0
VGVanguard Global Advisers, LLC	Unchanged	1,221	$7,509	0.0%	+62.83%	0
GROUP ONE TRADING LLC	Decreased	240(-89.0%)	$1,476	0.0%	+20.34%	0
NISA INVESTMENT ADVISORS, LLC	Unchanged	228	$1,402	0.0%	-4.56%	0
JPMORGAN CHASE & CO	Decreased	195(-95.6%)	$1,194	0.0%	+70.04%	0
BNP PARIBAS FINANCIAL MARKETS	Decreased	66(-2.9%)	$406	0.0%	-80.68%	0

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HBIOHARVARD BIOSCIENCE INC

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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer