Opko Health Inc
Ownership
Ownership Structure
Who owns Opko Health Inc (OPK)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 43.4% of the shares are freely tradable; institutional investors hold 27.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Rubric Capital Management LP | 6.40 | 47,791,243 | +0.0 | 06/30/2026 |
| BlackRock Inc | 4.95 | 36,978,893 | +2.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 2.01 | 14,968,930 | +3.2 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 2.00 | 14,934,924 | +1.1 | 06/30/2026 |
| Geode Capital Management, LLC | 1.55 | 11,581,027 | +2.5 | 06/30/2026 |
| State Street Corp | 1.38 | 10,309,070 | +8.5 | 06/30/2026 |
| The Goldman Sachs Group Inc | 0.94 | 7,035,492 | -8.3 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Russell 2000 ETF | 1.38 | 10,318,703 | -1.1 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 1.31 | 9,753,393 | +0.0 | 09/30/2026 |
| Vanguard Small Cap Index | 0.90 | 6,722,912 | -3.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Rubin Steven D | Executive VP-Administration | 6,571,966 | 11,172,342 $ | Jul 24, 2026 | direct |
| Logal Adam | Sr. Vice President, CFO | 563,396 | 957,773 $ | Jul 24, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 24, 2026 | Logal Adam | Sr. Vice President, CFO | Other | 53,266 | 1.22 | 64,985 |
| Jul 24, 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: October 30, 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.