Opko Health Inc (OPK)
Who owns Opko Health Inc (OPK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 44.1% of the shares are freely tradable; institutional investors hold 27.2%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Rubric Capital Management LP | 6.33 | 47,791,243 | +0.0 | 03/31/2026 |
| BlackRock Inc | 4.80 | 36,232,223 | +4.0 | 03/31/2026 |
| Vanguard Group Inc | 4.30 | 32,457,788 | -13.5 | 12/31/2025 |
| Vanguard Portfolio Management, LLC | 1.96 | 14,769,719 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 1.92 | 14,499,164 | +0.0 | 03/31/2026 |
| Geode Capital Management, LLC | 1.50 | 11,301,501 | +2.2 | 03/31/2026 |
| State Street Corp | 1.26 | 9,501,377 | +6.1 | 03/31/2026 |
| The Goldman Sachs Group Inc | 1.02 | 7,675,026 | +28.2 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Russell 2000 ETF | 1.30 | 9,823,369 | +0.9 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 1.25 | 9,433,793 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 24. Jul 2026 | Logal Adam | Sr. Vice President, CFO | Other | 53,266 | 1.22 | 64,985 |
| 24. Jul 2026 | Rubin Steven D | Executive VP-Administration | Other | 53,266 | 1.22 | 64,985 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →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.