OPTIMIZERx Corp (OPRX)
Healthcare
Health Information Services
6.10 $
-3.5%
vs. previous close
Closing price · As of: 31. Jul 2026
Who owns OPTIMIZERx Corp (OPRX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 76.9% of the shares are freely tradable; institutional investors hold 77.7%.
Ownership Structure
Institutional ownership
Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
77.7%
Insiders
Share of the stock held by the executives, founders and major shareholders of the company itself.
12.9%
Float
Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
76.9%
Short % of float
Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
10.3%
Shares Outstanding
Total number of shares issued. Price times share count gives market cap.
19Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Whetstone Capital Advisors, LLC | 8.04 | 1,508,303 | +0.0 | 03/31/2026 |
| BlackRock Inc | 6.20 | 1,163,501 | -2.6 | 03/31/2026 |
| Vanguard Group Inc | 6.06 | 1,136,933 | +7.3 | 12/31/2025 |
| Royce & Associates, LP | 4.73 | 888,030 | +30.2 | 03/31/2026 |
| Parkman Healthcare Partners LLC | 3.89 | 729,369 | +35.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.65 | 685,449 | +0.0 | 03/31/2026 |
| Kennedy Capital Management Inc | 3.50 | 656,258 | -2.6 | 03/31/2026 |
| Blair William & Co | 3.28 | 614,992 | +5.6 | 03/31/2026 |
| Rice Hall James & Associates, LLC | 3.21 | 601,921 | +1.9 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 3.00 | 563,570 | +22.3 | 03/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.