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Harvard Bioscience Inc

HBIO
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
SEC CIK
0001123494

No open-market purchases or sales by Harvard Bioscience Inc insiders were filed in the last 90 days; 37 institutions reported holding it in 13F filings for Q2 2026, worth $10.3M in total; no superinvestor holds it.

13F holders, Q1 2026

Institutional positions in Harvard Bioscience Inc as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
37
−26 vs. Q4 2025
Shares held
1.59M
+31.8K (+2.0%) vs. Q4 2025Converted for a 1-for-10 split
Total value
$7.73M
−$2.67M (−25.7%) vs. Q4 2025
New holders
3
10 more added
Sold out
29
12 more reduced

1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q4 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting HBIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2026: 37 institutions
Q1 2021: 87 institutionsQ2 2021: 99 institutionsQ3 2021: 99 institutionsQ4 2021: 103 institutionsQ1 2022: 98 institutionsQ2 2022: 91 institutionsQ3 2022: 79 institutionsQ4 2022: 68 institutionsQ1 2023: 66 institutionsQ2 2023: 100 institutionsQ3 2023: 94 institutionsQ4 2023: 93 institutionsQ1 2024: 90 institutionsQ2 2024: 100 institutionsQ3 2024: 95 institutionsQ4 2024: 96 institutionsQ1 2025: 92 institutionsQ2 2025: 69 institutionsQ3 2025: 61 institutionsQ4 2025: 64 institutionsQ1 2026: 37 institutionsQ2 2026: 37 institutions
Value heldQ1 2026: $7.73M
Q1 2021: $144.2MQ2 2021: $232.3MQ3 2021: $191.7MQ4 2021: $211.4MQ1 2022: $187.3MQ2 2022: $106.8MQ3 2022: $74.0MQ4 2022: $83.3MQ1 2023: $127.2MQ2 2023: $178.2MQ3 2023: $141.6MQ4 2023: $176.4MQ1 2024: $137.8MQ2 2024: $90.7MQ3 2024: $84.2MQ4 2024: $65.5MQ1 2025: $14.5MQ2 2025: $8.39MQ3 2025: $7.29MQ4 2025: $11.7MQ1 2026: $7.73MQ2 2026: $10.3M
Institutions holding HBIO and their total value by quarter
QuarterHoldersValue
Q2 202637$10.3M
Q1 202637$7.73M
Q4 202564$11.7M
Q3 202561$7.29M
Q2 202569$8.39M
Q1 202592$14.5M
Q4 202496$65.5M
Q3 202495$84.2M
Q2 2024100$90.7M
Q1 202490$137.8M
Q4 202393$176.4M
Q3 202394$141.6M
Q2 2023100$178.2M
Q1 202366$127.2M
Q4 202268$83.3M
Q3 202279$74.0M
Q2 202291$106.8M
Q1 202298$187.3M
Q4 2021103$211.4M
Q3 202199$191.7M
Q2 202199$232.3M
Q1 202187$144.2M

Institutions, Q1 2026

Shares, value and share of portfolio for each institution holding Harvard Bioscience Inc; share changes are against Q4 2025.

Institutions holding HBIO in Q1 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Weber Capital Management LLC320,037$1.56M1.56%00.0%UnchangedConverted for a 1-for-10 split
Acadian Asset Management LLC179,614$873.0K0.00%+2,351+1.3%AddedConverted for a 1-for-10 split
Vanguard Capital Management LLC163,313$795.3K0.00%+163,313New
Corsair Capital Management, L.P.124,810$607.8K0.09%+13,941+12.6%AddedConverted for a 1-for-10 split
Meros Investment Management, LP118,522$577.2K0.25%−3,241−2.7%ReducedConverted for a 1-for-10 split
Nano Cap New Millennium Growth Fund L P117,500$572.2K0.53%+57,500+95.8%AddedConverted for a 1-for-10 split
Two Sigma Investments, LP114,117$555.8K0.00%+12,875+12.7%AddedConverted for a 1-for-10 split
Renaissance Technologies LLC101,427$493.9K0.00%−697−0.7%ReducedConverted for a 1-for-10 split
BlackRock, Inc.62,226$303.0K0.00%00.0%UnchangedConverted for a 1-for-10 split
Geode Capital Management, LLC59,511$289.9K0.00%+13,432+29.1%AddedConverted for a 1-for-10 split
Millennium Management LLC46,332$225.6K0.00%−8,275−15.2%ReducedConverted for a 1-for-10 split
Williams & Novak, LLC27,052$137.7K0.10%−7,828−22.4%ReducedConverted for a 1-for-10 split
Vanguard Fiduciary Trust Co27,730$135.0K0.00%+27,730New
Essex Investment Management Co LLC27,021$131.6K0.02%+8,553+46.3%AddedConverted for a 1-for-10 split
Jane Street Group, LLC23,830$116.1K0.00%−17,686−42.6%ReducedConverted for a 1-for-10 split
RBF Capital, LLC16,000$77.9K0.00%00.0%UnchangedConverted for a 1-for-10 split
State Street Corp14,932$72.7K0.00%00.0%UnchangedConverted for a 1-for-10 split
Bank of New York Mellon Corp10,230$49.8K0.00%−2,392−19.0%ReducedConverted for a 1-for-10 split
UBS Group AG8,405$40.9K0.00%+6,284+296.2%AddedConverted for a 1-for-10 split
Citigroup Inc6,273$30.6K0.00%−13,110−67.6%ReducedConverted for a 1-for-10 split
JPMorgan Chase & Co4,463$20.8K0.00%+4,267+2,177.0%AddedConverted for a 1-for-10 split
FMR LLC3,274$15.9K0.00%00.0%UnchangedConverted for a 1-for-10 split
Group One Trading, L.P.2,182$10.6K0.00%−369−14.5%ReducedConverted for a 1-for-10 split
Morgan Stanley1,628$7.93K0.00%−41−2.4%ReducedConverted for a 1-for-10 split
Vanguard Global Advisers, LLC1,221$5.95K0.00%+1,221New
Tower Research Capital LLC (TRC)1,152$5.61K0.00%+913+381.0%AddedConverted for a 1-for-10 split
SBI Securities Co., Ltd.866$4.22K0.00%00.0%UnchangedConverted for a 1-for-10 split
Royal Bank of Canada855$4.00K0.00%+376+78.3%AddedConverted for a 1-for-10 split
Brown Shipley& Co Ltd478$2.33K0.00%00.0%UnchangedConverted for a 1-for-10 split
Nisa Investment Advisors, LLC228$1.11K0.00%00.0%UnchangedConverted for a 1-for-10 split
Pension & Wealth Management Advisors, Inc.225$1.10K0.00%00.0%UnchangedConverted for a 1-for-10 split
Federated Hermes, Inc.73$3560.00%−93−55.9%ReducedConverted for a 1-for-10 split
BNP Paribas Arbitrage, SA68$3310.00%00.0%UnchangedConverted for a 1-for-10 split
The PNC Financial Services Group, Inc.14$680.00%−0−2.8%ReducedConverted for a 1-for-10 split
SHP Wealth Management10$490.00%00.0%UnchangedConverted for a 1-for-10 split
CWM, LLC4$190.00%−1−25.9%ReducedConverted for a 1-for-10 split
Financial Connections Group, Inc.30$00.00%00.0%UnchangedConverted for a 1-for-10 split
Two Sigma Advisers, LP0$00.00%−87,856−100.0%Sold outConverted for a 1-for-10 split
Portolan Capital Management, LLC0$00.00%−40,965−100.0%Sold outConverted for a 1-for-10 split
Susquehanna International Group, LLP0$00.00%−13,987−100.0%Sold outConverted for a 1-for-10 split
Assenagon Asset Management S.A.0$00.00%−13,922−100.0%Sold outConverted for a 1-for-10 split
Northern Trust Corp0$00.00%−9,197−100.0%Sold outConverted for a 1-for-10 split
Virtu Financial LLC0$00.00%−5,951−100.0%Sold outConverted for a 1-for-10 split
Gamco Investors, Inc. Et Al0$00.00%−5,700−100.0%Sold outConverted for a 1-for-10 split
Goldman Sachs Group Inc0$00.00%−4,975−100.0%Sold outConverted for a 1-for-10 split
Pasadena Private Wealth, LLC0$00.00%−4,500−100.0%Sold outConverted for a 1-for-10 split
Legato Capital Management LLC0$00.00%−4,347−100.0%Sold outConverted for a 1-for-10 split
Citadel Advisors LLC0$00.00%−4,299−100.0%Sold outConverted for a 1-for-10 split
XTX Topco Ltd0$00.00%−3,935−100.0%Sold outConverted for a 1-for-10 split
Gabelli Funds LLC0$00.00%−3,900−100.0%Sold outConverted for a 1-for-10 split
Callan Family Office, LLC0$00.00%−2,979−100.0%Sold outConverted for a 1-for-10 split
Dimensional Fund Advisors LP0$00.00%−2,779−100.0%Sold outConverted for a 1-for-10 split
Greenwood Capital Associates LLC0$00.00%−2,775−100.0%Sold outConverted for a 1-for-10 split
Abel Hall, LLC0$00.00%−2,528−100.0%Sold outConverted for a 1-for-10 split
Two Sigma Securities, LLC0$00.00%−1,755−100.0%Sold outConverted for a 1-for-10 split
Qube Research & Technologies Ltd0$00.00%−1,703−100.0%Sold outConverted for a 1-for-10 split
JustInvest LLC0$00.00%−1,654−100.0%Sold outConverted for a 1-for-10 split
Point72 Asset Management, L.P.0$00.00%−1,472−100.0%Sold outConverted for a 1-for-10 split
Simplex Trading, LLC0$00.00%−1,379−100.0%Sold outConverted for a 1-for-10 split
Camden Capital, LLC0$00.00%−1,368−100.0%Sold outConverted for a 1-for-10 split
GSK plc0$00.00%−1,115−100.0%Sold outConverted for a 1-for-10 split
Ethic Inc.0$00.00%−1,094−100.0%Sold outConverted for a 1-for-10 split
Balboa Wealth Partners0$00.00%−1,000−100.0%Sold outConverted for a 1-for-10 split
Bank of America Corp0$00.00%−45−100.0%Sold outConverted for a 1-for-10 split
Barclays PLC0$00.00%−2−100.0%Sold outConverted for a 1-for-10 split
Optiver Holding B.V.0$00.00%−1−100.0%Sold outConverted for a 1-for-10 split
Vanguard Group Inc––––Not filed