OraSure Technologies is a medical - instruments & supplies company in the healthcare sector on NASDAQ, led by Stephen S. Tang, with a market cap of $178.6M. As of Q3 2025, 86% of shares are held by 145 institutional investors, with BlackRock, Inc. as the largest holder at 9.17%.
Overview of institutional ownership in OSUR as of Q3 2025 with a market cap of $234.8M
Based on market cap of $234.8M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Institutions with the largest positions in OSUR as of Q3 2025
| Institution | Position Value |
|---|---|
B BlackRock, Inc. Institution | $21.5M 0.00% of portfolio |
PRIVATE MANAGEMENT GROUP INC RIA/Wealth | $17.4M 0.51% of portfolio |
N Neuberger Berman Group LLC Institution | $13.5M 0.01% of portfolio |
VANGUARD GROUP INC Institution | $13.3M 0.00% of portfolio |
Altai Capital Management, L.P. Hedge Fund•Distressed | $12.0M 23.71% of portfolio |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | $11.7M 0.00% of portfolio |
SYSTEMATIC FINANCIAL MANAGEMENT LP Long Only Manager | $8.1M 0.20% of portfolio |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | $7.3M 0.01% of portfolio |
ACADIAN ASSET MANAGEMENT LLC Long Only Manager | $6.8M 0.01% of portfolio |
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | $6.8M 0.01% of portfolio |
Institutional buying and selling activity for OSUR in Q3 2025
| Institution | Net Bought |
|---|---|
Altai Capital Management, L.P. Hedge Fund•Distressed | +$5.1M +1.6M shares |
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | +$2.8M +878.2K shares |
K Kent Lake PR LLC Hedge Fund•Long/Short | +$1.8M +567.9K shares |
GOLDMAN SACHS GROUP INC Institution | +$1.2M +373.7K shares |
UBS Group AG Institution | +$1.1M +358.0K shares |
SYSTEMATIC FINANCIAL MANAGEMENT LP Long Only Manager | +$941.7K +293.4K shares |
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy | +$808.5K +251.9K shares |
CANNELL CAPITAL LLC Hedge Fund•Long/Short | +$753.8K +234.8K shares |
B BlackRock, Inc. Institution | +$451.6K +140.7K shares |
R ROYAL BANK OF CANADA Institution | +$285.6K +89.0K shares |
| Institution | Net Sold |
|---|---|
A AMERICAN CENTURY COMPANIES INC Institution | −$6.0M −1.9M shares |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | −$3.9M −1.2M shares |
MORGAN STANLEY RIA/Wealth | −$1.1M −348.5K shares |
Empowered Funds, LLC ETF Provider | −$1.1M −331.5K shares |
S Steamboat Capital Partners, LLC Hedge Fund•Long/Short | −$775.1K −241.5K shares |
N Nuveen, LLC Institution | −$660.0K −205.6K shares |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | −$644.6K −200.8K shares |
Q Qube Research & Technologies Ltd Institution | −$580.4K −180.8K shares |
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Long Only Manager | −$572.6K −190.9K shares |
JPMORGAN CHASE & CO Institution | −$467.7K −145.7K shares |
Institutions that initiated new positions or completely exited OSUR in Q3 2025
| Institution | Position Value |
|---|---|
K Kent Lake PR LLC Hedge Fund•Long/Short | $1.8M 567.9K shares |
SALEM INVESTMENT COUNSELORS INC RIA/Wealth | $273.0 85.0 shares |
Sunbelt Securities, Inc. RIA/Wealth | $193.0 60.0 shares |
| Institution | Previous Position |
|---|---|
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Long Only Manager | $572.6K 190.9K shares |
PRIMECAP MANAGEMENT CO/CA/ Long Only Manager | $228.3K 76.1K shares |
W Winton Capital Group Ltd Institution | $223.2K 74.4K shares |
PRINCIPAL FINANCIAL GROUP INC Institution | $194.4K 64.8K shares |
S State of Wyoming Institution | $179.1K 59.7K shares |
VICTORY CAPITAL MANAGEMENT INC Long Only Manager | $84.9K 28.3K shares |
V Virtu Financial LLC Institution | $72.9K 24.3K shares |
A AXQ CAPITAL, LP Hedge Fund•Market Neutral | $69.6K 23.2K shares |
M Man Group plc Institution | $64.9K 21.6K shares |
US BANCORP \DE\ Institution | $58.3K 19.4K shares |
Institutions with the largest Call and Put options positions in OSUR as of Q3 2025
| Institution | Position Value |
|---|---|
W WOLVERINE TRADING, LLC Institution | $68.4K 215.0 contracts |
| Institution | Position Value |
|---|---|
| No put positions found | |
Institutions with OSUR as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
Altai Capital Management, L.P. Hedge Fund•Distressed | 23.71% $12.0M |
G Gagnon Advisors, LLC Hedge Fund•Long/Short | 2.39% $3.9M |
P Peapod Lane Capital LLC Institution | 1.94% $2.2M |
CANNELL CAPITAL LLC Hedge Fund•Long/Short | 1.77% $6.7M |
S Steamboat Capital Partners, LLC Hedge Fund•Long/Short | 1.13% $4.3M |
GAGNON SECURITIES LLC RIA/Wealth | 1.04% $5.1M |
K Kent Lake PR LLC Hedge Fund•Long/Short | 0.93% $1.8M |
F Factorial Partners, LLC Hedge Fund•Value | 0.65% $897.5K |
PRIVATE MANAGEMENT GROUP INC RIA/Wealth | 0.51% $17.4M |
SYSTEMATIC FINANCIAL MANAGEMENT LP Long Only Manager | 0.20% $8.1M |
Discover hedge funds investing in OSUR

| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
ETF ETF | $1.0B | 6.02% | |
Semiconductors Technology | $544.1M | 3.25% | |
ETF ETF | $281.5M | 1.68% |
We use cookies for analytics. See our Privacy and Cookie Policy.