Bio-Rad Laboratories Inc (BIO)
Who owns Bio-Rad Laboratories Inc (BIO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 96.4% of the shares are freely tradable; institutional investors hold 94.4%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Arnhold & S. Bleichroeder Advisers, LLC | 9.73 | 2,602,772 | +1.3 | 03/31/2026 |
| Vanguard Group Inc | 6.63 | 1,774,263 | -1.1 | 12/31/2025 |
| BlackRock Inc | 6.28 | 1,680,060 | -0.1 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 4.07 | 1,089,323 | +1.1 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.11 | 831,165 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.10 | 829,186 | +0.0 | 03/31/2026 |
| Ariel Investments, LLC | 2.94 | 785,961 | +2.8 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| First Eagle Global A | 7.02 | 1,878,739 | +0.0 | 05/31/2026 |
| UBS: Global Equity | 4.74 | 1,269,058 | +0.0 | 12/31/2025 |
| American Funds SMALLCAP World A | 2.83 | 756,037 | +72.0 | 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.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 25. Jul 2026 | Engelhardt Eva Anette | EVP, President, CDG | Other | 89 | 314.46 | 27,987 |
| 25. Jul 2026 | Engelhardt Eva Anette | EVP, President, CDG | Other | 246 | 0.00 | – |
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.