Harvard Bioscience
HBIO • NASDAQ
Harvard Bioscience is a medical - instruments & supplies company in the healthcare sector on NASDAQ, led by John Duke, with a market cap of $33.0M. As of Q3 2025, 37% of shares are held by 57 institutional investors, with AMH Equity Ltd as the largest holder at 9.09%.
President and Chief Executive OfficerJohn Duke
Market Cap$33.0M
Medical - Instruments & Supplies
Healthcare
Employees416.0
Websiteharvardbioscience.com
Country
United States of America
Overview
Overview of institutional ownership in HBIO as of Q3 2025 with a market cap of $19.5M
All Institutions
- Institutions
- 57
- Value Held
- $7.3M
- Shares Held
- 16.6M
- Avg Position
- $127.9K
- Median Position
- $13.1K
Hedge Funds
- Hedge Funds
- 6
- Value Held
- $2.8M
- Shares Held
- 6.3M
- Avg Position
- $460.8K
- Median Position
- $229.3K
Ownership Breakdown
Based on market cap of $19.5M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in HBIO as of Q3 2025
| Institution | Position Value |
|---|---|
 AMH Equity Ltd Hedge Fund•Long/Short | $1.8M 2.25% of portfolio |
H Harvey Partners, LLC Institution | $898.9K 0.08% of portfolio |
 VANGUARD GROUP INC Institution | $813.0K 0.00% of portfolio |
 ACADIAN ASSET MANAGEMENT LLC Long Only Manager | $469.1K 0.00% of portfolio |
 Meros Investment Management, LP Long Only Manager | $402.7K 0.17% of portfolio |
 RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $380.8K 0.00% of portfolio |
B BlackRock, Inc. Institution | $272.5K 0.00% of portfolio |
 GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | $264.6K 0.01% of portfolio |
 MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | $250.7K 0.00% of portfolio |
 DIMENSIONAL FUND ADVISORS LP Long Only Manager | $217.6K 0.00% of portfolio |
Net Capital Flow
Institutional buying and selling activity for HBIO in Q3 2025
- Traded
- −$560.6K
- Buyers
- 17
- Sellers
- 35
- Total Bought
- +$671.4K
- Total Sold
- −$1.2M
- Avg Position
- $101.3K
Biggest Buyers
| Institution | Net Bought |
|---|---|
AMH Equity Ltd Hedge Fund•Long/Short | +$236.3K +538.8K shares |
 TWO SIGMA INVESTMENTS LLC Hedge Fund•Multi-Strategy | +$121.2K +276.4K shares |
 TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy | +$86.1K +196.3K shares |
W Williams & Novak, LLC Institution | +$74.1K +168.9K shares |
A Assenagon Asset Management S.A. Institution | +$44.9K +102.4K shares |
 CORSAIR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy | +$43.9K +100.0K shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | +$33.5K +76.5K shares |
ACADIAN ASSET MANAGEMENT LLC Long Only Manager | +$13.4K +30.5K shares |
 UBS Group AG Institution | +$5.8K +-778.9K shares |
 GOLDMAN SACHS GROUP INC Institution | +$5.6K +-195.0K shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | −$393.8K −898.0K shares |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | −$276.3K −630.1K shares |
B BlackRock, Inc. Institution | −$216.3K −493.2K shares |
 Marshall Wace LLP Institution | −$61.0K −138.7K shares |
H Harvey Partners, LLC Institution | −$39.9K −91.1K shares |
G GAMCO INVESTORS, INC. ET AL Institution | −$34.2K −77.0K shares |
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$29.9K −68.2K shares |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | −$24.6K −56.1K shares |
 AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy | −$20.3K −45.7K shares |
 NORTHERN TRUST CORP Institution | −$19.2K −43.7K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited HBIO in Q3 2025
- New Positions
- 1
- New Value
- $6.0
- Exited Positions
- 12
- Exited Value
- $170.1K
New Positions
| Institution | Position Value |
|---|---|
O Optiver Holding B.V. Institution | $6.0 14.0 shares |
Exited Positions
| Institution | Previous Position |
|---|---|
Marshall Wace LLP Institution | $61.0K 138.7K shares |
G GAMCO INVESTORS, INC. ET AL Institution | $34.2K 77.0K shares |
AQR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy | $20.3K 45.7K shares |
H HRT FINANCIAL LLC Institution | $18.4K 41.5K shares |
V Virtu Financial LLC Institution | $11.8K 26.5K shares |
S SG Americas Securities, LLC Institution | $9.5K 21.5K shares |
Y Y-Intercept Ltd Institution | $7.5K 16.9K shares |
X XTX Topco Ltd Institution | $4.9K 11.1K shares |
 RAYMOND JAMES FINANCIAL INC RIA/Wealth | $1.7K 3.8K shares |
 Transce3nd, LLC RIA/Wealth | $416.0 938.0 shares |
Options Activity
Institutions with the largest Call and Put options positions in HBIO as of Q3 2025
- Call Positions
- 2
- Call Value
- $23.7K
- Put Positions
- 2
- Put Value
- -
Call Positions
| Institution | Position Value |
|---|---|
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | $18.6K 424.0 contracts |
W WOLVERINE TRADING, LLC Institution | $5.1K 116.0 contracts |
Put Positions
| Institution | Position Value |
|---|---|
W WOLVERINE TRADING, LLC Institution | - - contracts |
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | - - contracts |
Most Committed Institutions
Institutions with HBIO as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
AMH Equity Ltd Hedge Fund•Long/Short | 2.25% $1.8M |
Meros Investment Management, LP Long Only Manager | 0.17% $402.7K |
A Acuitas Investments, LLC Fund of Funds | 0.14% $215.3K |
W Williams & Novak, LLC Institution | 0.09% $120.8K |
H Harvey Partners, LLC Institution | 0.08% $898.9K |
 Pasadena Private Wealth, LLC RIA/Wealth | 0.02% $107.0K |
GRANAHAN INVESTMENT MANAGEMENT INC/MA Long Only Manager | 0.01% $264.6K |
CORSAIR CAPITAL MANAGEMENT LLC Hedge Fund•Multi-Strategy | 0.01% $43.9K |
A Abel Hall, LLC RIA/Wealth | 0.01% $14.1K |
R RBF Capital, LLC Institution | 0.00% $70.2K |
Hedge Fund Spotlight
Discover hedge funds investing in HBIO
RENAISSANCE TECHNOLOGIES LLC
Hedge Fund • Quant
Portfolio ManagerPeter Fitzhugh Brown
- Portfolio Value
- $75.8B
- Positions
- 3,419
- Last Reported
- Q3 2025
Sector Allocation
Position in Harvard Bioscience
- Market Value
- $380.8K
- Shares Held
- 868.5K
- Portfolio Weight
- 0.00%
- Owned Since
- 2013-Q2
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Software - Infrastructure Technology | $1.6B | 2.06% | |
Semiconductors Technology | $1.1B | 1.39% | |
Electronic Gaming & Multimedia Technology | $953.5M | 1.26% |
