Harvard BioscienceHBIO
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 34 institutions reported holding Harvard Bioscience Inc. (HBIO) in their 13F filings, up 33 from Q4 2025. 0 opened new positions and 0 sold out. The largest holders were Weber Capital Management LLC ($1.6M), Acadian Asset Management LLC ($873K) and Vanguard Capital Management LLC ($795K). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Harvard Bioscience Inc.
- CUSIP
- 416906204
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 0 | $0 |
All 13F filers, Q4 2025 → Q1 2026: 62,991 shares bought and 52,535 shares sold, net +10,456 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 34 holders
| Weber Capital Management LLC | 1.56% | No change | 320,037 | $1.6M |
| Acadian Asset Management LLC | 0.00% | Add +1.3% | 179,614 | $873K |
| Vanguard Capital Management LLC | 0.00% | — | 163,313 | $795K |
| Corsair Capital Management, L.P. | 0.09% | Add +12.6% | 124,810 | $608K |
| Two Sigma Investments, LP | 0.00% | Add +12.7% | 114,117 | $556K |
| Renaissance Technologies | 0.00% | Reduce -0.7% | 101,427 | $494K |
| BlackRock, Inc. | 0.00% | No change | 62,226 | $303K |
| Geode Capital Management, LLC | 0.00% | Add +29.1% | 59,511 | $290K |
| Millennium Management | 0.00% | Reduce -15.2% | 46,332 | $226K |
| Williams & Novak, LLC | 0.10% | Reduce -22.4% | 27,052 | $138K |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 27,730 | $135K |
| Essex Investment Management Co. LLC | 0.02% | Add +46.3% | 27,021 | $132K |
| Jane Street Group, LLC | 0.00% | Reduce -42.6% | 23,830 | $116K |
| RBF Capital, LLC | 0.00% | No change | 16,000 | $78K |
| State Street Corp. | 0.00% | No change | 14,932 | $73K |
| Bank of New York Mellon Corp | 0.00% | Reduce -18.9% | 10,230 | $50K |
| UBS Group AG | 0.00% | Add +296.2% | 8,405 | $41K |
| Citigroup Inc. | 0.00% | Reduce -67.6% | 6,273 | $31K |
| JPMorgan Chase & Co. | 0.00% | Add +2177.0% | 4,463 | $21K |
| FMR LLC | 0.00% | Reduce -0.5% | 3,274 | $16K |
| Group One Trading LLC | 0.00% | Reduce -14.5% | 2,182 | $11K |
| Morgan Stanley | 0.00% | Reduce -2.4% | 1,628 | $8K |
| Vanguard Global Advisers, LLC | 0.00% | — | 1,221 | $6K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +381.0% | 1,152 | $6K |
| SBI Securities Co., Ltd. | 0.00% | Reduce -0.1% | 866 | $4K |
| Royal Bank of Canada | 0.00% | Add +78.3% | 855 | $4K |
| Brown Shipley& Co Ltd | 0.00% | No change | 478 | $2K |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -0.4% | 228 | $1K |
| Pension & Wealth Management Advisors, Inc. | 0.00% | Reduce -90.0% | 225 | $1K |
| Federated Hermes, Inc. | 0.00% | Reduce -55.9% | 73 | $356 |
| BNP Paribas Financial Markets | 0.00% | No change | 68 | $331 |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -2.8% | 14 | $68 |
| SHP Wealth Management | 0.00% | No change | 10 | $49 |
| Cwm, LLC | 0.00% | Reduce -25.9% | 4 | $19 |
"% of holder's portfolio" is HBIO's weight in each manager's 13F, not the share of Harvard Bioscience Inc. the manager owns.