HBIO Institutional Ownership & Shareholders
HARVARD BIOSCIENCE INC (HBIO) is currently held by 36 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $10.84M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Weber Capital Management Llc is currently the largest disclosed institutional shareholder of HBIO tracked by InsiderSet, reporting ownership valued at approximately $2.37M in its September 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.58M, representing an estimated gain of +8.59% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 86% of the total disclosed HBIO value among the investors covered in this analysis. Major shareholders include Weber Capital Management Llc, Meros Investment Management, Lp, Acadian Asset Management Llc, and several other long-term asset managers with concentrated positions in HARVARD BIOSCIENCE INC (HBIO).
This page ranks the largest institutional HBIO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
36
Total Reported Value
$10.84M
Largest Holder
Weber Capital Management Llc
Largest Position
$2.37M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
68
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Weber Capital Management Llc | 2.16% | 299,816 | $2,374,543 | $2,578,418 | +$203,875 | +8.59% | |
| Meros Investment Management, Lp | 0.36% | 182,992 | $1,125,401 | $1,573,731 | +$448,330 | +39.84% | |
| Acadian Asset Management Llc | 0.00% | 179,614 | $1,103,000 | $1,544,680 | +$441,680 | +40.04% | |
| Vanguard Capital Management Llc | 0.00% | 169,625 | $1,043,194 | $1,458,775 | +$415,581 | +39.84% | |
| Nano Cap New Millennium Growth Fund L P | 0.68% | 143,082 | $879,954 | $1,230,505 | +$350,551 | +39.84% | |
| Corsair Capital Management, L.P. | 0.10% | 122,810 | $755,282 | $1,056,166 | +$300,884 | +39.84% | |
| Two Sigma Investments, Lp | 0.00% | 114,545 | $704,452 | $985,087 | +$280,635 | +39.84% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 99,327 | $610,861 | $854,212 | +$243,351 | +39.84% |
| Blackrock, Inc. | 0.00% | 61,834 | $380,280 | $531,772 | +$151,492 | +39.84% | |
| Geode Capital Management, Llc | 0.00% | 47,555 | $292,534 | $408,973 | +$116,439 | +39.80% | |
| Essex Investment Management Co Llc | 0.03% | 26,973 | $213,626 | $231,968 | +$18,342 | +8.59% | |
| Mink Brook Asset Management Llc | 0.09% | 33,369 | $205,219 | $286,973 | +$81,754 | +39.84% | |
| Millennium Management Llc | 0.00% | 32,620 | $200,613 | $280,532 | +$79,919 | +39.84% | |
| Vanguard Fiduciary Trust Co | 0.00% | 27,730 | $170,540 | $238,478 | +$67,938 | +39.84% | |
| Williams & Novak, Llc | 0.08% | 16,555 | $131,116 | $142,373 | +$11,257 | +8.59% | |
| Ubs Group Ag | 0.00% | 17,581 | $108,123 | $151,197 | +$43,074 | +39.84% | |
| Rbf Capital, Llc | 0.00% | 16,000 | $98,400 | $137,600 | +$39,200 | +39.84% | |
| State Street Corp | 0.00% | 14,932 | $91,832 | $128,415 | +$36,583 | +39.84% | |
| Jane Street Group, Llc | 0.00% | 13,982 | $85,989 | $120,245 | +$34,256 | +39.84% | |
| Citadel Advisors Llc | 0.00% | 13,251 | $81,494 | $113,959 | +$32,465 | +39.84% | |
| Goldman Sachs Group Inc | 0.00% | 10,657 | $65,541 | $91,650 | +$26,109 | +39.84% | |
| Bank Of New York Mellon Corp | 0.00% | 10,230 | $62,915 | $87,978 | +$25,063 | +39.84% | |
| Fmr Llc | 0.00% | 3,179 | $19,551 | $27,339 | +$7,788 | +39.84% | |
| Morgan Stanley | 0.00% | 1,627 | $10,006 | $13,992 | +$3,986 | +39.84% | |
| Vanguard Global Advisers, Llc | 0.00% | 1,221 | $7,509 | $10,501 | +$2,992 | +39.84% | |
| Sbi Securities Co., Ltd. | 0.00% | 866 | $6,859 | $7,448 | +$589 | +8.58% | |
| Brown Shipley& Co Ltd | 0.00% | 478 | $3,786 | $4,111 | +$325 | +8.58% | |
| Tower Research Capital Llc (Trc) | 0.00% | 580 | $3,567 | $4,988 | +$1,421 | +39.84% | |
| Nisa Investment Advisors, Llc | 0.00% | 228 | $1,806 | $1,961 | +$155 | +8.57% | |
| Group One Trading Llc | 0.00% | 240 | $1,476 | $2,064 | +$588 | +39.84% | |
| Jpmorgan Chase & Co | 0.00% | 195 | $1,194 | $1,677 | +$483 | +40.45% | |
| Bnp Paribas Financial Markets | 0.00% | 66 | $406 | $568 | +$162 | +39.80% | |
| Barclays Plc | 0.00% | 26 | $160 | $224 | +$64 | +39.75% | |
| Pnc Financial Services Group, Inc. | 0.00% | 14 | $86 | $120 | +$34 | +40.00% | |
| Shp Wealth Management | 0.00% | 10 | $62 | $86 | +$24 | +38.71% | |
| Cwm, Llc | 0.00% | 4 | $19 | $34 | +$15 | +81.05% |
Frequently asked questions about HBIO
Who are the largest institutional holders of HBIO?
The largest institutional holders of HBIO reported in the latest SEC Form 13F filings include Weber Capital Management Llc, Meros Investment Management, Lp, Acadian Asset Management Llc, Vanguard Capital Management Llc, and Nano Cap New Millennium Growth Fund L P. InsiderSet ranks institutional holders by their latest reported HBIO position.
What is HBIO institutional ownership?
This page tracks HBIO positions reported by institutional investment managers through SEC Form 13F. HARVARD BIOSCIENCE INC (HBIO) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own HBIO?
InsiderSet currently tracks 36 institutional managers reporting HBIO holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of HBIO shareholders.
How much HBIO stock do institutions own?
Institutional investment managers disclosed approximately $10.84M in HBIO holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was HBIO institutional ownership last updated?
The latest HBIO institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional HBIO holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its HBIO position after the reporting date.
Are institutions buying or selling HBIO?
Institutional buying and selling can be analyzed by comparing HBIO positions across consecutive 13F reporting periods. InsiderSet's HBIO Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View HBIO ownership changes.
How has HBIO institutional ownership changed over time?
InsiderSet tracks HBIO institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.