HARVARD BIOSCIENCE INC (HBIO) — Institutional Holders, Q2 2026
37 institutional investment managers reported a HBIO position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $10.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
HBIO in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- Mink Brook Asset ManagementNew · +33,369 sh+$205.2K
- CITADEL ADVISORSNew · +13,251 sh+$81.5K
- GOLDMAN SACHS GROUPNew · +10,657 sh+$65.5K
- UBS Group AGAdded · +9,176 sh+$56.4K
- VANGUARD CAPITAL MANAGEMENTAdded · +6,312 sh+$38.8K
Biggest sellers
- MILLENNIUM MANAGEMENTTrimmed · -13,712 sh-$84.3K
- GEODE CAPITAL MANAGEMENTTrimmed · -11,956 sh-$73.5K
- JANE STREET GROUPTrimmed · -9,848 sh-$60.6K
- WEBER CAPITAL MANAGEMENTTrimmed · -9,176 sh-$56.4K
- CITIGROUPSold out · -6,273 sh-$38.6K
HBIO 13F holders ranked 1–37 of 37
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | WEBER CAPITAL MANAGEMENT#1 · 310,861 sh | 310,861 | $1.9M | — | -2.9% |
| 2 | Meros Investment Management#2 · 182,992 sh | 182,992 | $1.1M | 0.36% | +54.4% |
| 3 | ACADIAN ASSET MANAGEMENT#3 · 179,614 sh | 179,614 | $1.1M | <0.01% | 0.0% |
| 4 | VANGUARD CAPITAL MANAGEMENT#4 · 169,625 sh | 169,625 | $1.0M | 0.00% | +3.9% |
| 5 | NANO CAP NEW MILLENNIUM GROWTH FUND L P#5 · 143,082 sh | 143,082 | $880.0K | 0.68% | +21.8% |
| 6 | CORSAIR CAPITAL MANAGEMENT, L.P.#6 · 122,810 sh | 122,810 | $755.3K | 0.09% | -1.6% |
| 7 | TWO SIGMA INVESTMENTS#7 · 114,545 sh | 114,545 | $704.5K | <0.01% | +0.4% |
| 8 | RENAISSANCE TECHNOLOGIES#8 · 99,327 sh | 99,327 | $610.9K | <0.01% | -2.1% |
| 9 | BlackRock#9 · 61,834 sh | 61,834 | $380.3K | 0.00% | -0.6% |
| 10 | GEODE CAPITAL MANAGEMENT#10 · 47,555 sh | 47,555 | $292.5K | 0.00% | -20.1% |
| 11 | Mink Brook Asset Management#11 · 33,369 sh | 33,369 | $205.2K | 0.09% | New |
| 12 | MILLENNIUM MANAGEMENT#12 · 32,620 sh | 32,620 | $200.6K | <0.01% | -29.6% |
| 13 | VANGUARD FIDUCIARY#13 · 27,730 sh | 27,730 | $170.5K | 0.00% | 0.0% |
| 14 | ESSEX INVESTMENT MANAGEMENT#14 · 26,973 sh | 26,973 | $165.9K | — | -0.2% |
| 15 | Williams & Novak#15 · 20,949 sh | 20,949 | $128.8K | — | -22.6% |
| 16 | UBS Group AG#16 · 17,581 sh | 17,581 | $108.1K | 0.00% | +109.2% |
| 17 | RBF Capital#17 · 16,000 sh | 16,000 | $98.4K | <0.01% | 0.0% |
| 18 | STATE STREET#18 · 14,932 sh | 14,932 | $91.8K | 0.00% | 0.0% |
| 19 | JANE STREET GROUP#19 · 13,982 sh | 13,982 | $86.0K | 0.00% | -41.3% |
| 20 | CITADEL ADVISORS#20 · 13,251 sh | 13,251 | $81.5K | 0.00% | New |
| 21 | GOLDMAN SACHS GROUP#21 · 10,657 sh | 10,657 | $65.5K | 0.00% | New |
| 22 | Bank of New York Mellon#22 · 10,230 sh | 10,230 | $62.9K | 0.00% | 0.0% |
| 23 | FMR#23 · 3,179 sh | 3,179 | $19.6K | 0.00% | -2.9% |
| 24 | MORGAN STANLEY#24 · 1,627 sh | 1,627 | $10.0K | 0.00% | -0.1% |
| 25 | Vanguard Global Advisers#25 · 1,221 sh | 1,221 | $7.5K | 0.00% | 0.0% |
| 26 | SBI Securities , Ltd.#26 · 866 sh | 866 | $5.3K | — | 0.0% |
| 27 | Tower Research Capital (TRC)#27 · 580 sh | 580 | $3.6K | <0.01% | -49.7% |
| 28 | Brown Shipley& Ltd#28 · 478 sh | 478 | $2.9K | — | 0.0% |
| 29 | GROUP ONE TRADING, L.P.#29 · 240 sh | 240 | $1.5K | 0.00% | -89.0% |
| 30 | NISA INVESTMENT ADVISORS#30 · 228 sh | 228 | $1.4K | — | 0.0% |
| 31 | PENSION & WEALTH MANAGEMENT ADVISORS#31 · 225 sh | 225 | $1.4K | — | 0.0% |
| 32 | JPMORGAN CHASE#32 · 195 sh | 195 | $1.2K | 0.00% | -95.6% |
| 33 | BNP PARIBAS FINANCIAL MARKETS#33 · 66 sh | 66 | $406.00 | 0.00% | -2.9% |
| 34 | BARCLAYS PLC#34 · 26 sh | 26 | $160.00 | 0.00% | New |
| 35 | PNC FINANCIAL SERVICES GROUP#35 · 14 sh | 14 | $86.00 | 0.00% | 0.0% |
| 36 | SHP Wealth Management#36 · 10 sh | 10 | $62.00 | 0.00% | 0.0% |
| 37 | ROYAL BANK OF CANADA#37 · 15 sh | 15 | $0.00 | 0.00% | -98.2% |
Funds that sold out of HBIO in Q2 2026 (2)
Held HBIO at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| CITIGROUP6,273 sh | 6,273 | $30.6K |
| FEDERATED HERMES73 sh | 73 | $356.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.