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.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| Whetstone Capital Advisors, LLC | 1.5M | 13.5% |
| 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 | 5.7% |
| 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 |
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.