Harvard Bioscience Inc (HBIO) Institutional Ownership

Institutions by Trading Activity

44,556,000Shares Outstanding

236,052Shares held by institutions

$1,319,531Value of institutional holdings

0.53%Institutional ownership %

-87.02%Shares Changed QoQ

3No. of institutional investors

Harvard Bioscience Inc (NASDAQ:HBIO) has 64 institutional investors that have filed 13F reports for the period ending December 2025.

They owned 39.5% of outstanding stock in December 2025, up from 38.4% the prior quarter.
They increased total shares held in Harvard Bioscience by 87.82% from last quarter, and the number of investors in HBIO decreased 34.02% annually.
During the quarter, 33 of these 64 funds increased positions in HBIO, 19 reduced exposure, and 12 held steady.
Combined, these investors held 17.62Mn shares in HBIO for December 2025, up by 8.24Mn shares quarter on quarter, and down 13.84Mn shares year over year.
As of December 31, 2025, the biggest holder of Harvard Bioscience is Meros Investment Management, LP at 118.52K shares, representing 0.27% of shares outstanding.
The largest sellers of Harvard Bioscience for the quarter ending December 2025 were Meros Investment Management, LP (1.1Mn), NANO CAP NEW MILLENNIUM GROWTH FUND L P (482.5K), Financial Connections Group, Inc. (270).
Business Quant data shows the 3 biggest positions in Harvard Bioscience as of December 2025 are held by Meros Investment Management, LP (118.52K), NANO CAP NEW MILLENNIUM GROWTH FUND L P (117.5K), Financial Connections Group, Inc. (30).

236,052 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
WEBER CAPITAL MANAGEMENT LLC /ADV	31 Dec, 2025	3,200,380	3,200,380	0.00%	$2,140,413.00
VANGUARD GROUP INC	31 Dec, 2025	1,923,275	71,429	3.86%	$1,286,671.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	1,772,627	702,937	65.71%	$1,184.00
Meros Investment Management, LP	31 Dec, 2025	1,217,628	299,369	32.60%	$814,365.00
CORSAIR CAPITAL MANAGEMENT, L.P.	31 Dec, 2025	1,108,692	908,692	454.35%	$741,493.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	1,021,241	152,763	17.59%	$683,006.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	1,012,417	538,260	113.52%	$677,104.00
TWO SIGMA ADVISERS, LP	31 Dec, 2025	878,556	635,400	261.31%	$587,578.00
BlackRock, Inc.	31 Dec, 2025	622,296	929	0.15%	$416,191.00
NANO CAP NEW MILLENNIUM GROWTH FUND L P	31 Dec, 2025	600,000	600,000	0.00%	$401,280.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	546,067	-25,636	-4.48%	$365,210.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	460,793	18,923	4.28%	$308,248.00
JANE STREET GROUP, LLC	31 Dec, 2025	415,159	374,595	923.47%	$277,658.00
Portolan Capital Management, LLC	31 Dec, 2025	409,650	409,650	0.00%	$273,974.00
Williams & Novak, LLC	31 Dec, 2025	348,800	73,300	26.61%	$233,277.00
RBF Capital, LLC	31 Dec, 2025	320,000	160,000	100.00%	$214,016.00
Citigroup Inc	31 Dec, 2025	193,828	192,319	12,744.80%	$129,632.00
ESSEX INVESTMENT MANAGEMENT CO LLC	31 Dec, 2025	184,678	184,678	0.00%	$123,513.00
State Street Corp	31 Dec, 2025	149,352	0	0.00%	$99,887.00
SUSQUEHANNA INTERNATIONAL GROUP, LLP	31 Dec, 2025	139,869	55,520	65.82%	$93,544.00

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