HBIO
Harvard Bioscience Inc
$6.35
+0.20 (+3.25%)
At close · Jul 6
Market Cap
$29.00M
Shares
4,510,182
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 33
Total Value: $6,571,441
Total Shares: 1,349,376
Institutional Ownership Trend
2 quarters
Holder Concentration
Across 33 13F filers · Δ vs Jun 30, 2025Top Holder
23.7%
−76.3 pts
Top 5
66.8%
−33.2 pts
Top 10
88.9%
−11.1 pts
HHI
1,172
Broadly held−8,828
Quarterly Activity
vs Jun 30, 2025
New
33
Increased
0
Decreased
0
Sold Out
1
Unchanged
0
Holder count:
+32
Institutional value:
+1720172.5%
Shares held:
+1550906.9%
Top New Positions
vs Jun 30, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Micro WEBER CAPITAL MANAGEMENT LLC /ADV | 320,037 | $1,558,580 | |
| Large ACADIAN ASSET MANAGEMENT LLC | 179,614 | $874,720 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 163,313 | $795,334 | |
| Small CORSAIR CAPITAL MANAGEMENT, L.P. | 124,810 | $607,824 | |
| Mega TWO SIGMA INVESTMENTS, LP | 114,117 | $555,749 |
Top Sold-Out Positions
vs Jun 30, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Small Essential Partners LLC | 87 | $382 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Micro WEBER CAPITAL MANAGEMENT LLC /ADV | $1,558,580 | 23.72% | 320,037 | Shares | Sole | 2026-04-23 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $874,720 | 13.31% | 179,614 | Shares | Defined | 2026-05-13 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $795,334 | 12.10% | 163,313 | Shares | Defined | 2026-05-15 | ||||
| Small CORSAIR CAPITAL MANAGEMENT, L.P. | $607,824 | 9.25% | 124,810 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $555,749 | 8.46% | 114,117 | Shares | Sole | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $493,949 | 7.52% | 101,427 | Shares | Sole | 2026-05-14 | ||||
| Mega BlackRock, Inc. | $303,039 | 4.61% | 62,226 | Shares | Sole | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $289,818 | 4.41% | 59,511 | Shares | Defined | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $225,636 | 3.43% | 46,332 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $135,045 | 2.06% | 27,730 | Shares | Defined | 2026-05-08 | ||||
| Micro Williams & Novak, LLC | $131,743 | 2.00% | 27,052 | Shares | Sole | 2026-04-21 | ||||
| Small ESSEX INVESTMENT MANAGEMENT CO LLC | $131,592 | 2.00% | 27,021 | Shares | Sole | 2026-05-11 | ||||
| Mega JANE STREET GROUP, LLC | $116,051 | 1.77% | 23,830 | Shares | Defined | 2026-05-12 | ||||
| Mid RBF Capital, LLC | $77,920 | 1.19% | 16,000 | Shares | Sole | 2026-05-18 | ||||
| Mega STATE STREET CORP | $72,718 | 1.11% | 14,932 | Shares | Defined | 2026-05-15 | ||||
| Mega Bank of New York Mellon Corp Bank | $49,819 | 0.76% | 10,230 | Shares | Defined | 2026-05-05 | ||||
| Mega UBS Group AG | $40,931 | 0.62% | 8,405 | Shares | Defined | 2026-05-05 | ||||
| Mega CITIGROUP INC | $30,549 | 0.46% | 6,273 | Shares | Defined | 2026-05-11 | ||||
| Mega JPMORGAN CHASE & CO | $21,733 | 0.33% | 4,463 | Shares | Defined | 2026-05-13 | ||||
| Mega FMR LLC | $15,944 | 0.24% | 3,274 | Shares | Defined | 2026-05-15 | ||||
| Mid GROUP ONE TRADING LLC | $10,626 | 0.16% | 2,182 | Shares | Sole | 2026-05-13 | ||||
| Mega MORGAN STANLEY | $7,927 | 0.12% | 1,628 | Shares | Defined | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $5,946 | 0.09% | 1,221 | Shares | Defined | 2026-05-08 | ||||
| Mid Tower Research Capital LLC (TRC) | $5,610 | 0.09% | 1,152 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $4,217 | 0.06% | 866 | Shares | Defined | 2026-04-28 | ||||
| Mega ROYAL BANK OF CANADA Bank | $4,163 | 0.06% | 855 | Shares | Defined | 2026-05-15 | ||||
| Small Brown Shipley& Co Ltd | $2,327 | 0.04% | 478 | Shares | Sole | 2026-05-06 | ||||
| Large NISA INVESTMENT ADVISORS, LLC | $1,110 | 0.02% | 228 | Shares | Sole | 2026-04-30 | ||||
| Large FEDERATED HERMES, INC. | $355 | 0.01% | 73 | Shares | Defined | 2026-05-11 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $331 | 0.01% | 68 | Shares | Defined | 2026-05-12 | ||||
| Mega PNC FINANCIAL SERVICES GROUP, INC. | $68 | 0.00% | 14 | Shares | Defined | 2026-05-08 | ||||
| Small SHP Wealth Management | $48 | 0.00% | 10 | Shares | Sole | 2026-05-08 | ||||
| Large CWM, LLC | $19 | 0.00% | 4 | Shares | Sole | 2026-05-14 | ||||
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