Harvard Bioscience HBIO Institutional Ownership

NASDAQ HBIO

$7.90 -0.14 (-1.77%)

As of: Sep 10, 2026 · 9:46 AM EDT

Institutions by Trading Activity

37 Institutions

Increased 9 24.3%

Unchanged 11 29.7%

Reduced 17 45.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

37.11%

▲+1.30 pp QoQ

Shares Held by Institutions

1.68Mn

of 4.53Mn outstanding

▲+5.28% QoQ

Shares Outstanding

4.53Mn

2.85Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

■0 vs prior quarter

Net Shares Added (QoQ)

+84.22K

accumulated since last quarter

Value of Holdings

$13.47Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Harvard Bioscience Inc (NASDAQ:HBIO) showed up in the 13F filings of 37 institutional investors as of June 2026.

They owned 37.1% of outstanding stock in June 2026, up from 35.8% the prior quarter.
Their total shares held in HBIO increased 5.28% from the prior quarter, while the number of investors in Harvard Bioscience decreased 45.59% year over year.
Of these 37 funds, 9 grew their exposure to Harvard Bioscience, 17 cut back, and 11 maintained positions.
The aggregate institutional position in Harvard Bioscience amounted to 1.68Mn shares as of June 2026, up by 84.22K shares quarter on quarter, and down 209.25K shares year over year.
As of June 30, 2026, WEBER CAPITAL MANAGEMENT LLC /ADV held the largest stake in Harvard Bioscience with 310.86K shares, accounting for 6.87% of total shares outstanding.
Top purchasers of HBIO stock for the quarter ending June 2026 included Meros Investment Management, LP (64.47K), Mink Brook Asset Management LLC (33.37K), NANO CAP NEW MILLENNIUM GROWTH FUND L P (25.58K), CITADEL ADVISORS LLC (13.25K), Goldman Sachs Group Inc (10.66K).
The largest sales of HBIO for the quarter ending June 2026 came from RBF Capital, LLC (16.0K), MILLENNIUM MANAGEMENT LLC (13.71K), GEODE CAPITAL MANAGEMENT, LLC (11.96K), JANE STREET GROUP, LLC (9.85K), WEBER CAPITAL MANAGEMENT LLC /ADV (9.18K).
Per Business Quant, the top 10 investors in HBIO for the quarter ending June 2026 include WEBER CAPITAL MANAGEMENT LLC /ADV (310.86K), Meros Investment Management, LP (182.99K), ACADIAN ASSET MANAGEMENT LLC (179.61K), VANGUARD CAPITAL MANAGEMENT LLC (169.62K), NANO CAP NEW MILLENNIUM GROWTH FUND L P (143.08K), CORSAIR CAPITAL MANAGEMENT, L.P. (122.81K), TWO SIGMA INVESTMENTS, LP (114.54K), RENAISSANCE TECHNOLOGIES LLC (99.33K), BlackRock, Inc. (61.83K), GEODE CAPITAL MANAGEMENT, LLC (47.56K).

Form 13F Holdings

37 Institutional Holders

Report period 30 Jun, 2026

Total shares held 1.68Mn

Of outstanding 37.11%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	WEBER CAPITAL MANAGEMENT LLC /ADV	0001099905	310,861	6.87%	▼9,176	-2.87%	$1.91Mn
2	Meros Investment Management, LP	0001911372	182,992	4.04%	▲64,470	+54.39%	$1.13Mn
3	ACADIAN ASSET MANAGEMENT LLC	0000916542	179,614	3.97%	0	0.00%	$1.10K
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	169,625	3.75%	▲6,312	+3.86%	$1.04Mn
5	NANO CAP NEW MILLENNIUM GROWTH FUND L P	0001277890	143,082	3.16%	▲25,582	+21.77%	$879.95K
6	CORSAIR CAPITAL MANAGEMENT, L.P.	0001276470	122,810	2.71%	▼2,000	-1.60%	$755.28K
7	TWO SIGMA INVESTMENTS, LP	0001179392	114,545	2.53%	▲428	+0.38%	$704.45K
8	RENAISSANCE TECHNOLOGIES LLC	0001037389	99,327	2.19%	▼2,100	-2.07%	$610.86K
9	BlackRock, Inc.	0002012383	61,834	1.37%	▼392	-0.63%	$380.28K
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	47,555	1.05%	▼11,956	-20.09%	$292.53K
11	Mink Brook Asset Management LLC	0002052205	33,369	0.74%	▲33,369	0.00%	$205.22K
12	MILLENNIUM MANAGEMENT LLC	0001273087	32,620	0.72%	▼13,712	-29.60%	$200.61K
13	VANGUARD FIDUCIARY TRUST CO	0000933478	27,730	0.61%	0	0.00%	$170.54K
14	ESSEX INVESTMENT MANAGEMENT CO LLC	0000201772	26,973	0.60%	▼48	-0.18%	$165.88K
15	Williams & Novak Wealth Management, LLC	0001998419	20,949	0.46%	▼6,103	-22.56%	$128.84K
16	UBS Group AG	0001610520	17,581	0.39%	▲9,176	+109.17%	$108.12K
17	RBF Capital, LLC	0001134621	16,000	0.35%	▼16,000	-50.00%	$98.40K
18	State Street Corp	0000093751	14,932	0.33%	0	0.00%	$91.83K
19	JANE STREET GROUP, LLC	0001595888	13,982	0.31%	▼9,848	-41.33%	$85.99K
20	CITADEL ADVISORS LLC	0001423053	13,251	0.29%	▲13,251	0.00%	$81.49K

Showing 1 to 20 of 37 holders