HARVARD BIOSCIENCE INC (HBIO) Institutional Ownership Changes & 13F Activity
HARVARD BIOSCIENCE INC (HBIO). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Meros Investment Management, Lp, Mink Brook Asset Management Llc, Nano Cap New Millennium Growth Fund L P, Millennium Management Llc, and Citadel Advisors Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Citadel Advisors Llc | Buy | +13,251 | — | 13,251 | $81.49K | Q2 2026 | Sep 02, 2026 |
| Meros Investment Management, Lp | Buy | +64,470 | +54.4% | 182,992 | $1.13M | Q2 2026 | Aug 14, 2026 |
| Mink Brook Asset Management Llc | Buy | +33,369 | — | 33,369 | $205.22K | Q2 2026 | Aug 14, 2026 |
| Nano Cap New Millennium Growth Fund L P | Buy | +25,582 | +21.8% | 143,082 | $879.95K | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -13,712 | -29.6% | 32,620 | $200.61K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +10,657 | — | 10,657 | $65.54K | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Sell | -9,848 | -41.3% | 13,982 | $85.99K | Q2 2026 | Aug 14, 2026 |
| Corsair Capital Management, L.P. | Sell | -2,000 | -1.6% | 122,810 | $755.28K | Q2 2026 | Aug 14, 2026 |
| Group One Trading Llc | Sell | -1,942 | -89.0% | 240 | $1.48K | Q2 2026 | Aug 14, 2026 |
| Royal Bank Of Canada | Sell | -840 | -98.2% | 15 | $0.00 | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +428 | +0.4% | 114,545 | $704.45K | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Buy | +26 | — | 26 | $160.00 | Q2 2026 | Aug 14, 2026 |
| Ubs Group Ag | Buy | +9,176 | +109.2% | 17,581 | $108.12K | Q2 2026 | Aug 13, 2026 |
| Weber Capital Management Llc | Sell | -9,176 | -2.9% | 310,861 | $1.91M | Q2 2026 | Aug 13, 2026 |
| Vanguard Capital Management Llc | Buy | +6,312 | +3.9% | 169,625 | $1.04M | Q2 2026 | Aug 13, 2026 |
| Renaissance Technologies LLC | Sell | -2,100 | -2.1% | 99,327 | $610.86K | Q2 2026 | Aug 13, 2026 |
| Fmr Llc | Sell | -95 | -2.9% | 3,179 | $19.55K | Q2 2026 | Aug 13, 2026 |
| Bnp Paribas Financial Markets | Sell | -2 | -2.9% | 66 | $406.00 | Q2 2026 | Aug 13, 2026 |
| Morgan Stanley | Sell | -1 | -0.1% | 1,627 | $10.01K | Q2 2026 | Aug 13, 2026 |
| Geode Capital Management, Llc | Sell | -11,956 | -20.1% | 47,555 | $292.53K | Q2 2026 | Aug 12, 2026 |
| Jpmorgan Chase & Co | Buy | +195 | — | 195 | $1.19K | Q2 2026 | Aug 12, 2026 |
| Tower Research Capital Llc (Trc) | Sell | -572 | -49.7% | 580 | $3.57K | Q2 2026 | Aug 11, 2026 |
| Blackrock, Inc. | Sell | -392 | -0.6% | 61,834 | $380.28K | Q2 2026 | Aug 07, 2026 |
| Essex Investment Management Co Llc | Sell | -48 | -0.2% | 26,973 | $165.88K | Q2 2026 | Aug 06, 2026 |
| Williams & Novak, Llc | Sell | -6,103 | -22.6% | 20,949 | $128.84K | Q2 2026 | Jul 08, 2026 |
| Cwm, Llc | Sell | -4 | -100.0% | 0 | $0.00 | Q2 2026 | May 14, 2026 |
| Citigroup Inc | Sell | -6,273 | -100.0% | 0 | $0.00 | Q2 2026 | May 11, 2026 |
| Federated Hermes, Inc. | Sell | -73 | -100.0% | 0 | $0.00 | Q2 2026 | May 11, 2026 |
| Financial Connections Group, Inc. | Sell | -30 | -100.0% | 0 | $0.00 | Q2 2026 | May 01, 2026 |
Frequently asked questions about HBIO activity
Which institutional owners are buying HBIO?
Institutional owners buying HBIO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in HBIO activity?
"Buy" means an investor increased their reported position in HBIO compared to the prior reporting period. This reflects growing exposure to HARVARD BIOSCIENCE INC (HBIO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in HBIO increasing?
Institutional interest in HBIO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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