OPRX OptimizeRx Corp.
OptimizeRx Corp. (OPRX) Institutional Ownership
What the institutions did with OPRX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Whetstone Capital Advisors, LLC | 1.5M | 13.4% |
| ROYCE & ASSOCIATES LP | 1.1M | 9.7% |
| VANGUARD CAPITAL MANAGEMENT LLC | 699.6K | 6.2% |
| KENNEDY CAPITAL MANAGEMENT LLC | 644.2K | 5.7% |
| RICE HALL JAMES & ASSOCIATES, LLC | 633.8K | 5.6% |
| BLAIR WILLIAM & CO/IL | 607.9K | 5.4% |
| AQR CAPITAL MANAGEMENT LLC | 584.0K | 5.2% |
| DIMENSIONAL FUND ADVISORS LP | 477.7K | 4.3% |
| BlackRock, Inc. | 445.4K | 4.0% |
| Parkman Healthcare Partners LLC | 350.3K | 3.1% |
| Bullseye Asset Management LLC | 258.3K | 2.3% |
| AWM Investment Company, Inc. | 240.4K | 2.1% |
| GEODE CAPITAL MANAGEMENT, LLC | 207.3K | 1.8% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 169.5K | 1.5% |
| RENAISSANCE TECHNOLOGIES LLC | 167.7K | 1.5% |
| MARSHALL WACE, LLP | 162.2K | 1.4% |
| P.A.W. CAPITAL CORP | 160.0K | 1.4% |
| CITADEL ADVISORS LLC | 158.0K | 1.4% |
| MORGAN STANLEY | 156.3K | 1.4% |
| Mink Brook Asset Management LLC | 141.2K | 1.3% |
| D. E. Shaw & Co., Inc. | 138.1K | 1.2% |
| Janney Montgomery Scott LLC | 136.0K | 1.2% |
| JANE STREET GROUP, LLC | 122.1K | 1.1% |
| GOLDMAN SACHS GROUP INC | 105.0K | 0.9% |
| Quantinno Capital Management LP | 99.1K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Reduced | 1.2M | 445.4K | -718.1K |
| STATE STREET CORP | Reduced | 477.8K | 80.6K | -397.2K |
| Parkman Healthcare Partners LLC | Reduced | 729.4K | 350.3K | -379.0K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 215.0K | 584.0K | +369.0K |
| GOLDMAN SACHS GROUP INC | Reduced | 358.4K | 105.0K | -253.4K |
| Invenomic Capital Management LP | Sold Out | 229.4K | 0 | -229.4K |
| ROYCE & ASSOCIATES LP | Increased | 888.0K | 1.1M | +201.4K |
| SEGALL BRYANT & HAMILL, LLC | Sold Out | 188.7K | 0 | -188.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 392.1K | 207.3K | -184.8K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 331.0K | 169.5K | -161.5K |
| CITADEL ADVISORS LLC | New | 0 | 158.0K | +158.0K |
| Mink Brook Asset Management LLC | New | 0 | 141.2K | +141.2K |
| Janney Montgomery Scott LLC | New | 0 | 136.0K | +136.0K |
| Squarepoint Ops LLC | Reduced | 177.6K | 45.1K | -132.5K |
| MARSHALL WACE, LLP | Increased | 31.3K | 162.2K | +130.9K |
| LPL Financial LLC | Sold Out | 129.6K | 0 | -129.6K |
| Russell Investments Group, Ltd. | Reduced | 125.5K | 885 | -124.6K |
| JANE STREET GROUP, LLC | New | 0 | 122.1K | +122.1K |
| NORTHERN TRUST CORP | Reduced | 155.4K | 37.0K | -118.4K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 563.6K | 477.7K | -85.9K |
| RAYMOND JAMES FINANCIAL INC | Sold Out | 83.2K | 0 | -83.2K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Sold Out | 82.1K | 0 | -82.1K |
| MORGAN STANLEY | Increased | 76.4K | 156.3K | +79.9K |
| Vanguard Global Advisers, LLC | Reduced | 85.4K | 6.9K | -78.5K |
| P.A.W. CAPITAL CORP | Increased | 90.0K | 160.0K | +70.0K |
| Schonfeld Strategic Advisors LLC | Reduced | 74.8K | 14.2K | -60.5K |
| SEI INVESTMENTS CO | Reduced | 98.6K | 41.4K | -57.2K |
| STATE OF WISCONSIN INVESTMENT BOARD | Reduced | 68.5K | 11.4K | -57.1K |
| Ancora Advisors LLC | Sold Out | 55.6K | 0 | -55.6K |
| Point72 Asset Management, L.P. | New | 0 | 55.6K | +55.6K |
| GWN SECURITIES INC. | Sold Out | 54.9K | 0 | -54.9K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Sold Out | 54.0K | 0 | -54.0K |
| Qube Research & Technologies Ltd | Reduced | 120.9K | 67.3K | -53.7K |
| MILLENNIUM MANAGEMENT LLC | Increased | 25.3K | 78.8K | +53.5K |
| Jain Global LLC | New | 0 | 51.7K | +51.7K |
| Quantinno Capital Management LP | Increased | 49.0K | 99.1K | +50.1K |
| Manatuck Hill Partners, LLC | Sold Out | 50.0K | 0 | -50.0K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 216.9K | 167.7K | -49.2K |
| Trexquant Investment LP | Reduced | 136.9K | 89.7K | -47.2K |
| FMR LLC | Reduced | 69.4K | 23.4K | -46.1K |
| HSBC HOLDINGS PLC | Increased | 13.3K | 58.9K | +45.7K |
| PRUDENTIAL FINANCIAL INC | Sold Out | 42.7K | 0 | -42.7K |
| Integrated Quantitative Investments LLC | Sold Out | 40.7K | 0 | -40.7K |
| ALLIANCEBERNSTEIN L.P. | Sold Out | 39.9K | 0 | -39.9K |
| OXFORD ASSET MANAGEMENT LLP | Sold Out | 39.0K | 0 | -39.0K |
| Nuveen, LLC | Sold Out | 39.0K | 0 | -39.0K |
| Bank of New York Mellon Corp | Reduced | 102.4K | 64.7K | -37.7K |
| HRT FINANCIAL LP | New | 0 | 35.7K | +35.7K |
| State of Wyoming | Sold Out | 35.3K | 0 | -35.3K |
| Man Group plc | Increased | 38.9K | 72.3K | +33.4K |
| Samjo Management, LLC | New | 0 | 32.0K | +32.0K |
| RICE HALL JAMES & ASSOCIATES, LLC | Increased | 601.9K | 633.8K | +31.9K |
| Bullseye Asset Management LLC | Increased | 226.5K | 258.3K | +31.8K |
| XTX Topco Ltd | Increased | 18.4K | 46.5K | +28.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 11.4K | 39.0K | +27.6K |
| Cetera Investment Advisers | Sold Out | 27.5K | 0 | -27.5K |
| Quadrature Capital Ltd | New | 0 | 25.6K | +25.6K |
| 9823 Capital, L.P. | New | 0 | 24.6K | +24.6K |
| STRS OHIO | Sold Out | 24.5K | 0 | -24.5K |
| UBS Group AG | Reduced | 79.3K | 55.5K | -23.7K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.