Bio-Rad Laboratories-ABIO
13F holders, Q1 2026 (March 31)395holders −5
54new positions
58sold out
10famous investors
$278.67avg. 13F price*
At the end of Q1 2026, 395 institutions reported holding Bio-Rad Laboratories-A (BIO) in their 13F filings, down 5 from Q4 2025. 54 opened new positions and 58 sold out. The largest holders were First Eagle Investment Management, LLC ($725.5M), BlackRock, Inc. ($468.3M) and Dimensional Fund Advisors LP ($303.6M). 10 famous investors held it, including John W. Rogers Jr. (2.5% of Ariel Investments's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Mario Gabelli (0.1% of GAMCO Investors's portfolio).
- Company
- Bio-Rad Laboratories-A
- CUSIP
- 090572207
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 54 | $305.4M |
| Exits | 58 | $389.8M |
All 13F filers, Q4 2025 → Q1 2026: 2,702,863 shares bought and 2,108,358 shares sold, net +594,505 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 395 holders
| First Eagle Investment Management, LLC | 1.23% | Add +1.3% | 2,602,772 | $725.5M |
| BlackRock, Inc. | 0.01% | Reduce -0.1% | 1,680,060 | $468.3M |
| Dimensional Fund Advisors LP | 0.06% | Add +1.1% | 1,089,323 | $303.6M |
| Vanguard Capital Management LLC | 0.01% | — | 831,165 | $231.7M |
| Vanguard Portfolio Management LLC | 0.01% | — | 829,186 | $231.1M |
| Ariel Investments | 2.45% | Add +2.8% | 785,961 | $219.1M |
| Earnest Partners LLC | 0.68% | Reduce -2.5% | 588,731 | $164.1M |
| State Street Corp. | 0.01% | Reduce -0.0% | 559,570 | $156.0M |
| Capital World Investors | 0.02% | New | 450,000 | $125.4M |
| Bank of America Corp. | 0.01% | Reduce -0.1% | 444,957 | $124.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.02% | Add +7.8% | 426,038 | $118.8M |
| First Pacific Advisors, LP | 1.62% | Add +1.5% | 407,358 | $113.6M |
| Massachusetts Financial Services Co. | 0.04% | Reduce -0.8% | 396,150 | $110.4M |
| Capital Research Global Investors | 0.02% | Reduce -22.0% | 385,579 | $107.5M |
| Geode Capital Management, LLC | 0.01% | Add +7.8% | 364,682 | $101.7M |
| UBS Group AG | 0.02% | Add +63.9% | 354,365 | $98.8M |
| Sei Investments Co. | 0.07% | Reduce -1.4% | 287,912 | $80.3M |
| Barclays PLC | 0.03% | Add +1038.4% | 278,835 | $77.7M |
| Morgan Stanley | 0.00% | Add +47.0% | 273,931 | $76.4M |
| Parnassus Investments, LLC | 0.21% | Add +0.9% | 254,305 | $70.9M |
| Deerfield Management Company, L.P. | 0.88% | No change | 226,070 | $63.0M |
| Northern Trust Corp. | 0.01% | Add +1.1% | 218,497 | $60.9M |
| Nomura Holdings Inc. | 0.51% | New | 217,342 | $60.6M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +9.0% | 196,558 | $54.8M |
| Mawer Investment Management Ltd. | 0.34% | Reduce -19.3% | 188,784 | $52.6M |
| Thompson Siegel & Walmsley LLC | 0.87% | Reduce -8.1% | 176,465 | $49.2M |
| GW&K Investment Management, LLC | 0.43% | Reduce -1.3% | 174,708 | $48.7M |
| Franklin Resources Inc. | 0.01% | Add +24.1% | 170,354 | $47.5M |
| Southeastern Asset Management Inc. | 2.23% | Reduce -28.5% | 162,804 | $45.4M |
| Gotham Asset Management | 0.13% | Add +30.2% | 152,384 | $42.5M |
| Citadel Advisors | 0.03% | Add +1468.2% | 148,669 | $41.4M |
| Assenagon Asset Management S.A. | 0.07% | Add +6586.3% | 147,834 | $41.2M |
| Freestone Grove Partners LP | 0.30% | Add +33.5% | 147,605 | $41.1M |
| Bank of New York Mellon Corp | 0.01% | Reduce -1.9% | 126,856 | $35.4M |
| Mangrove Partners Im, LLC | 2.87% | No change | 126,853 | $35.4M |
| CIBC Bancorp USA Inc. | 0.05% | — | 120,120 | $33.5M |
| Fisher Asset Management | 0.01% | Reduce -9.5% | 118,683 | $33.1M |
| Vanguard Fiduciary Trust Co. | 0.01% | — | 113,639 | $31.7M |
| Allianz Asset Management GmbH | 0.04% | Add +0.0% | 110,241 | $30.7M |
| Federated Hermes, Inc. | 0.05% | Reduce -3.5% | 109,895 | $30.6M |
| Envestnet Asset Management Inc. | 0.01% | Add +11.4% | 105,333 | $29.4M |
| Acadian Asset Management LLC | 0.04% | Reduce -14.8% | 102,800 | $28.6M |
| Manufacturers Life Insurance Company, The | 0.02% | Reduce -18.6% | 99,720 | $27.8M |
| Tikvah Management LLC | 8.45% | Reduce -11.9% | 97,834 | $27.3M |
| Hound Partners, LLC | 3.44% | Add +125.9% | 97,724 | $27.2M |
| JPMorgan Chase & Co. | 0.00% | Add +83.7% | 99,391 | $26.9M |
| Boston Trust Walden Corp | 0.21% | Add +4.1% | 93,495 | $26.1M |
| AQR Capital Management | 0.01% | Add +135.2% | 94,549 | $26.0M |
| JNE Partners LLP | 10.50% | No change | 92,100 | $25.7M |
| ING Groep NV | 0.15% | New | 90,000 | $25.1M |
| National Bank of Canada | 0.03% | New | 90,000 | $25.1M |
| Allspring Global Investments Holdings, LLC | 0.04% | Reduce -33.5% | 85,965 | $23.9M |
| QVIDTVM Management LLC | 28.68% | Add +0.3% | 83,732 | $23.3M |
| Natixis Advisors, LLC | 0.03% | Add +5.8% | 75,047 | $20.9M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -2.6% | 74,281 | $20.7M |
| Hosking Partners LLP | 0.69% | Add +27.9% | 69,009 | $19.2M |
| Jones Financial Companies LLLP | 0.01% | Add +5603.3% | 71,976 | $19.1M |
| Man Group plc | 0.04% | Add +978.8% | 67,436 | $18.8M |
| SG Americas Securities, LLC | 0.02% | Add +253.3% | 66,985 | $18.7M |
| Exchange Traded Concepts, LLC | 0.13% | Add +97.8% | 58,530 | $16.3M |
| Marathon Asset Management Ltd | 0.57% | Add +13.5% | 53,661 | $15.0M |
| Goldman Sachs Group Inc. | 0.00% | Add +46.4% | 53,040 | $14.8M |
| Select Equity Group, L.P. | 0.07% | New | 48,436 | $13.5M |
| HRT Financial LP | 0.03% | New | 46,556 | $13.0M |
| Rhumbline Advisers | 0.01% | Add +1.4% | 46,037 | $12.8M |
| Arnhold LLC | 0.88% | Add +23.3% | 42,902 | $12.0M |
| Principal Financial Group Inc. | 0.01% | Add +3.8% | 40,614 | $11.3M |
| Assetmark, Inc. | 0.02% | Add +19.0% | 38,989 | $10.9M |
| Amundi | 0.00% | Add +1763.4% | 38,778 | $10.8M |
| Swiss National Bank | 0.01% | No change | 36,880 | $10.3M |
| Invesco Ltd. | 0.00% | Add +5.1% | 36,835 | $10.3M |
| Teachers Retirement System of the State of Kentucky | 0.08% | No change | 36,444 | $10.2M |
| Legal & General Group Plc | 0.00% | Reduce -5.5% | 36,228 | $10.1M |
| Raymond James Financial Inc. | 0.00% | Add +8.4% | 35,894 | $10.0M |
| California Public Employees Retirement System | 0.01% | Add +1.2% | 35,348 | $9.9M |
| Quantinno Capital Management LP | 0.02% | Reduce -7.1% | 33,650 | $9.4M |
| Marshall Wace, LLP | 0.01% | Add +187.3% | 33,217 | $9.3M |
| Almitas Capital LLC | 1.91% | New | 30,254 | $8.4M |
| Nuveen, LLC | 0.00% | Add +2.5% | 29,417 | $8.2M |
| Gabelli Funds LLC | 0.05% | Reduce -16.0% | 28,400 | $7.9M |
| GAMCO Investors | 0.07% | No change | 26,750 | $7.5M |
| Alliancebernstein L.P. | 0.00% | Add +5.2% | 24,487 | $7.4M |
| BNP Paribas Financial Markets | 0.00% | Reduce -63.7% | 26,326 | $7.3M |
| Winslow Asset Management Inc. | 1.31% | Reduce -0.9% | 24,169 | $6.7M |
| Sector Gamma As | 1.56% | No change | 23,750 | $6.6M |
| Retirement Systems of Alabama | 0.02% | Add +2.1% | 22,289 | $6.2M |
| California State Teachers Retirement System | 0.01% | Add +22.9% | 21,932 | $6.1M |
| Wells Fargo & Company | 0.00% | Add +14.2% | 20,669 | $5.8M |
| Van Eck Associates Corp. | 0.00% | Reduce -2.3% | 19,450 | $5.4M |
| Victory Capital Management Inc. | 0.00% | Add +34.3% | 18,639 | $5.2M |
| New York State Teachers Retirement System | 0.01% | Add +5.0% | 18,372 | $5.1M |
| Lazard Asset Management LLC | 0.01% | New | 18,290 | $5.1M |
| Ameriprise Financial Inc. | 0.00% | Reduce -1.0% | 18,023 | $5.0M |
| Royal Bank of Canada | 0.00% | Add +16.9% | 17,198 | $4.8M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 16,368 | $4.6M |
| LPL Financial LLC | 0.00% | Add +6.2% | 16,240 | $4.5M |
| State Board of Administration of Florida Retirement System | 0.01% | Reduce -14.1% | 16,003 | $4.5M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 15,743 | $4.4M |
| Russell Investments Group, Ltd. | 0.00% | Add +250.1% | 15,494 | $4.3M |
| HSBC Holdings PLC | 0.00% | New | 15,585 | $4.3M |
"% of holder's portfolio" is BIO's weight in each manager's 13F, not the share of Bio-Rad Laboratories-A the manager owns.