BIO Bio-Rad Laboratories, Inc.
Bio-Rad Laboratories, Inc. (BIO) Institutional Ownership
What the institutions did with BIO 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 subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| First Eagle Investment Management, LLC | 5.2M | 23.4% |
| BlackRock, Inc. | 1.7M | 7.6% |
| DIMENSIONAL FUND ADVISORS LP | 944.5K | 4.2% |
| VANGUARD CAPITAL MANAGEMENT LLC | 827.0K | 3.7% |
| ARIEL INVESTMENTS, LLC | 816.8K | 3.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 816.2K | 3.7% |
| EARNEST PARTNERS LLC | 580.8K | 2.6% |
| STATE STREET CORP | 571.8K | 2.6% |
| BANK OF AMERICA CORP /DE/ | 490.4K | 2.2% |
| Assenagon Asset Management S.A. | 466.5K | 2.1% |
| Capital World Investors | 462.5K | 2.1% |
| Capital Research Global Investors | 443.5K | 2.0% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 418.9K | 1.9% |
| First Pacific Advisors, LP | 401.9K | 1.8% |
| GEODE CAPITAL MANAGEMENT, LLC | 347.6K | 1.6% |
| NOMURA HOLDINGS INC | 328.9K | 1.5% |
| UBS Group AG | 308.3K | 1.4% |
| SEI INVESTMENTS CO | 273.4K | 1.2% |
| BARCLAYS PLC | 267.6K | 1.2% |
| DEERFIELD MANAGEMENT COMPANY, L.P. | 226.1K | 1.0% |
| NORTHERN TRUST CORP | 218.3K | 1.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 195.5K | 0.9% |
| FRANKLIN RESOURCES INC | 193.7K | 0.9% |
| AQR CAPITAL MANAGEMENT LLC | 192.7K | 0.9% |
| MORGAN STANLEY | 190.3K | 0.9% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| First Eagle Investment Management, LLC | Increased | 2.6M | 5.2M | +2.6M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | 396.2K | 7.9K | -388.3K |
| Assenagon Asset Management S.A. | Increased | 147.8K | 466.5K | +318.6K |
| PARNASSUS INVESTMENTS, LLC | Sold Out | 254.3K | 0 | -254.3K |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Sold Out | 162.8K | 0 | -162.8K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 1.1M | 944.5K | -144.8K |
| GOLDMAN SACHS GROUP INC | Increased | 53.0K | 181.2K | +128.2K |
| CIBC Bancorp USA Inc. | Sold Out | 120.1K | 0 | -120.1K |
| Mawer Investment Management Ltd. | Reduced | 188.8K | 71.6K | -117.2K |
| NOMURA HOLDINGS INC | Increased | 217.3K | 328.9K | +111.6K |
| NEUBERGER BERMAN GROUP LLC | Increased | 3.0K | 111.8K | +108.8K |
| FEDERATED HERMES, INC. | Reduced | 109.9K | 4.3K | -105.6K |
| SG Americas Securities, LLC | Increased | 67.0K | 170.8K | +103.8K |
| VICTORY CAPITAL MANAGEMENT INC | Increased | 18.6K | 122.1K | +103.5K |
| AQR CAPITAL MANAGEMENT LLC | Increased | 94.5K | 192.7K | +98.2K |
| FIRST TRUST ADVISORS LP | Increased | 1.5K | 94.2K | +92.7K |
| CITADEL ADVISORS LLC | Reduced | 148.7K | 60.8K | -87.9K |
| MORGAN STANLEY | Reduced | 273.9K | 190.3K | -83.6K |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | 102.8K | 21.4K | -81.4K |
| WELLS FARGO & COMPANY/MN | Increased | 20.7K | 97.5K | +76.8K |
| Hound Partners, LLC | Reduced | 97.7K | 22.5K | -75.2K |
| Man Group plc | Reduced | 67.4K | 1.4K | -66.0K |
| WELLINGTON MANAGEMENT GROUP LLP | New | 0 | 60.2K | +60.2K |
| Capital Research Global Investors | Increased | 385.6K | 443.5K | +57.9K |
| MILLENNIUM MANAGEMENT LLC | Increased | 3.3K | 59.9K | +56.6K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 74.3K | 19.3K | -55.0K |
| Select Equity Group, L.P. | Sold Out | 48.4K | 0 | -48.4K |
| THOMPSON SIEGEL & WALMSLEY LLC | Reduced | 176.5K | 129.9K | -46.6K |
| HRT FINANCIAL LP | Sold Out | 46.6K | 0 | -46.6K |
| UBS Group AG | Reduced | 354.4K | 308.3K | -46.0K |
| BANK OF AMERICA CORP /DE/ | Increased | 445.0K | 490.4K | +45.5K |
| BANK OF NOVA SCOTIA | New | 0 | 39.7K | +39.7K |
| ARIEL INVESTMENTS, LLC | Increased | 786.0K | 816.8K | +30.8K |
| Almitas Capital LLC | Sold Out | 30.3K | 0 | -30.3K |
| Tikvah Management LLC | Reduced | 97.8K | 68.6K | -29.2K |
| Portolan Capital Management, LLC | Increased | 14.2K | 42.6K | +28.4K |
| Palliser Capital (UK) Ltd | New | 0 | 28.0K | +28.0K |
| Hosking Partners LLP | Increased | 69.0K | 94.4K | +25.4K |
| NATIONAL BANK OF CANADA /FI/ | Reduced | 90.0K | 65.0K | -25.0K |
| Amundi | Reduced | 38.8K | 15.1K | -23.7K |
| Concentric Capital Strategies, LP | New | 0 | 23.7K | +23.7K |
| FRANKLIN RESOURCES INC | Increased | 170.4K | 193.7K | +23.3K |
| ING GROEP NV | Increased | 90.0K | 112.7K | +22.7K |
| Allianz Asset Management GmbH | Reduced | 110.2K | 87.8K | -22.5K |
| TUDOR INVESTMENT CORP ET AL | Increased | 5.2K | 25.0K | +19.8K |
| VAN ECK ASSOCIATES CORP | Sold Out | 19.5K | 0 | -19.5K |
| BlackRock, Inc. | Increased | 1.7M | 1.7M | +18.9K |
| LAZARD ASSET MANAGEMENT LLC | Sold Out | 18.3K | 0 | -18.3K |
| Boston Trust Walden Corp | Increased | 93.5K | 111.2K | +17.7K |
| QVIDTVM Management LLC | Reduced | 83.7K | 66.2K | -17.5K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 364.7K | 347.6K | -17.1K |
| Allspring Global Investments Holdings, LLC | Reduced | 86.0K | 69.6K | -16.4K |
| AYAL Capital Advisors Ltd | New | 0 | 16.3K | +16.3K |
| Longaeva Partners L.P. | New | 0 | 14.6K | +14.6K |
| SEI INVESTMENTS CO | Reduced | 287.9K | 273.4K | -14.5K |
| MARSHALL WACE, LLP | Reduced | 33.2K | 19.0K | -14.2K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | New | 0 | 14.1K | +14.1K |
| Campbell & CO Investment Adviser LLC | New | 0 | 14.1K | +14.1K |
| PFM Health Sciences, LP | New | 0 | 14.0K | +14.0K |
| Gotham Asset Management, LLC | Increased | 152.4K | 166.3K | +13.9K |
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.