HARVARD BIOSCIENCE INC (HBIO) Institutional Ownership Changes & 13F Activity

HARVARD BIOSCIENCE INC (HBIO). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Meros Investment Management, Lp, Mink Brook Asset Management Llc, Nano Cap New Millennium Growth Fund L P, Millennium Management Llc, and Citadel Advisors Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Citadel Advisors LlcBuy+13,251—13,251$81.49KQ2 2026Sep 02, 2026
Meros Investment Management, LpBuy+64,470+54.4%182,992$1.13MQ2 2026Aug 14, 2026
Mink Brook Asset Management LlcBuy+33,369—33,369$205.22KQ2 2026Aug 14, 2026
Nano Cap New Millennium Growth Fund L PBuy+25,582+21.8%143,082$879.95KQ2 2026Aug 14, 2026
Millennium Management LlcSell-13,712-29.6%32,620$200.61KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+10,657—10,657$65.54KQ2 2026Aug 14, 2026
Jane Street Group, LlcSell-9,848-41.3%13,982$85.99KQ2 2026Aug 14, 2026
Corsair Capital Management, L.P.Sell-2,000-1.6%122,810$755.28KQ2 2026Aug 14, 2026
Group One Trading LlcSell-1,942-89.0%240$1.48KQ2 2026Aug 14, 2026
Royal Bank Of CanadaSell-840-98.2%15$0.00Q2 2026Aug 14, 2026
Two Sigma Investments, LpBuy+428+0.4%114,545$704.45KQ2 2026Aug 14, 2026
Barclays PlcBuy+26—26$160.00Q2 2026Aug 14, 2026
Ubs Group AgBuy+9,176+109.2%17,581$108.12KQ2 2026Aug 13, 2026
Weber Capital Management LlcSell-9,176-2.9%310,861$1.91MQ2 2026Aug 13, 2026
Vanguard Capital Management LlcBuy+6,312+3.9%169,625$1.04MQ2 2026Aug 13, 2026
Renaissance Technologies LLCSell-2,100-2.1%99,327$610.86KQ2 2026Aug 13, 2026
Fmr LlcSell-95-2.9%3,179$19.55KQ2 2026Aug 13, 2026
Bnp Paribas Financial MarketsSell-2-2.9%66$406.00Q2 2026Aug 13, 2026
Morgan StanleySell-1-0.1%1,627$10.01KQ2 2026Aug 13, 2026
Geode Capital Management, LlcSell-11,956-20.1%47,555$292.53KQ2 2026Aug 12, 2026
Jpmorgan Chase & CoBuy+195—195$1.19KQ2 2026Aug 12, 2026
Tower Research Capital Llc (Trc)Sell-572-49.7%580$3.57KQ2 2026Aug 11, 2026
Blackrock, Inc.Sell-392-0.6%61,834$380.28KQ2 2026Aug 07, 2026
Essex Investment Management Co LlcSell-48-0.2%26,973$165.88KQ2 2026Aug 06, 2026
Williams & Novak, LlcSell-6,103-22.6%20,949$128.84KQ2 2026Jul 08, 2026
Cwm, LlcSell-4-100.0%0$0.00Q2 2026May 14, 2026
Citigroup IncSell-6,273-100.0%0$0.00Q2 2026May 11, 2026
Federated Hermes, Inc.Sell-73-100.0%0$0.00Q2 2026May 11, 2026
Financial Connections Group, Inc.Sell-30-100.0%0$0.00Q2 2026May 01, 2026
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Frequently asked questions about HBIO activity

  • Which institutional owners are buying HBIO?

    Institutional owners buying HBIO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in HBIO activity?

    "Buy" means an investor increased their reported position in HBIO compared to the prior reporting period. This reflects growing exposure to HARVARD BIOSCIENCE INC (HBIO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in HBIO increasing?

    Institutional interest in HBIO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.