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BIO

Bio-Rad Laboratories, Inc.

Company with tickers: BIO, BIO-B

CIK
12208
CUSIP
090572207
Shares Outstanding
21,700,560
Price History Institutional Holders Short Volume Short Interest Fails to Deliver Financials SEC Filings Earnings Calls Insider Trades Congressional Trades
Holders: 384
Total Value: $4,891,830,095
Total Shares: 17,549,167
Showing 1–100 of 388 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 384 13F filers · Δ vs Dec 31, 2025
Top Holder
14.8%
−0.1 pts
Top 5
38.4%
−0.3 pts
Top 10
51.5%
−1.4 pts
HHI
462
Broadly held −10

Quarterly Activity

vs Dec 31, 2025
New
370
Increased
7
Decreased
3
Sold Out
378
Unchanged
4
Holder count: -8
Institutional value: -6.5%
Shares held: +1.6%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds
Mega GOLDMAN SACHS GROUP INC +16,821 53,040
Mid Arnhold LLC +8,118 42,902
Mega VICTORY CAPITAL MANAGEMENT INC +4,761 18,639
Mid OP Asset Management Ltd +3,894 6,552
Large Rockefeller Capital Management L.P. +806 1,768

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds
Large GW&K Investment Management, LLC −2,375 174,708
Large Corient Private Wealth LLC −439 1,425
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC −265 903

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD)
Large First Eagle Investment Management, LLC 2,602,772 $725,522,694
Mega BlackRock, Inc. 1,680,060 $468,316,719
Mega DIMENSIONAL FUND ADVISORS LP 1,089,323 $303,648,784
Mid ARIEL INVESTMENTS, LLC 785,961 $219,086,628
Large EARNEST PARTNERS LLC 588,731 $164,108,766

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD)
Large First Eagle Investment Management, LLC 2,570,473 $778,827,614
Mega BlackRock, Inc. 1,680,948 $509,310,426
Mega DIMENSIONAL FUND ADVISORS LP 1,077,072 $326,342,043
Mid ARIEL INVESTMENTS, LLC 764,672 $231,687,968
Large EARNEST PARTNERS LLC 603,594 $182,882,946
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Action
Large First Eagle Investment Management, LLC $725,522,694 14.83% 2,602,772 View
Mega BlackRock, Inc. $468,316,719 9.57% 1,680,060 View
Mega DIMENSIONAL FUND ADVISORS LP $303,648,784 6.21% 1,089,323 View
Mid ARIEL INVESTMENTS, LLC $219,086,628 4.48% 785,961 View
Large EARNEST PARTNERS LLC $164,108,766 3.35% 588,731 View
Mega STATE STREET CORP $155,980,137 3.19% 559,570 View
Mega Capital World Investors $125,437,500 2.56% 450,000 View
Mega BANK OF AMERICA CORP /DE/ $124,031,762 2.54% 444,957 View
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $118,758,086 2.43% 426,038 View
Mid First Pacific Advisors, LP $113,551,042 2.32% 407,358 View
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ $110,426,810 2.26% 396,150 View
Mega Capital Research Global Investors $107,480,146 2.20% 385,579 View
Mega GEODE CAPITAL MANAGEMENT, LLC $101,655,106 2.08% 364,682 View
Mega UBS Group AG $98,779,242 2.02% 354,365 View
Large SEI INVESTMENTS CO $80,255,469 1.64% 287,912 View
Mega BARCLAYS PLC $77,725,255 1.59% 278,835 View
Large PARNASSUS INVESTMENTS, LLC $70,887,518 1.45% 254,305 View
Mid DEERFIELD MANAGEMENT COMPANY, L.P. $63,017,012 1.29% 226,070 View
Large NOMURA HOLDINGS INC $60,584,082 1.24% 217,342 View
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $54,790,542 1.12% 196,558 View
Large Mawer Investment Management Ltd. $52,623,540 1.08% 188,784 View
Mid THOMPSON SIEGEL & WALMSLEY LLC $49,189,618 1.01% 176,465 View
Large GW&K Investment Management, LLC $48,699,855 1.00% 174,708 View
Mega FRANKLIN RESOURCES INC $47,486,174 0.97% 170,354 View
Mid SOUTHEASTERN ASSET MANAGEMENT INC/TN/ $45,381,614 0.93% 162,804 View
Large Gotham Asset Management, LLC $42,477,040 0.87% 152,384 View
Mega CITADEL ADVISORS LLC $41,441,483 0.85% 148,669 View
Large Assenagon Asset Management S.A. $41,208,727 0.84% 147,834 View
Large Freestone Grove Partners LP $41,144,893 0.84% 147,605 View
Mega Bank of New York Mellon Corp $35,361,104 0.72% 126,856 View
Mid MANGROVE PARTNERS IM, LLC $35,360,273 0.72% 126,853 View
Mega Fisher Asset Management, LLC $33,082,886 0.68% 118,683 View
Large Allianz Asset Management GmbH $30,729,678 0.63% 110,241 View
Large FEDERATED HERMES, INC. $30,633,230 0.63% 109,895 View
Mega ENVESTNET ASSET MANAGEMENT INC $29,361,573 0.60% 105,333 View
Large ACADIAN ASSET MANAGEMENT LLC $28,655,500 0.59% 102,800 View
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE $27,796,950 0.57% 99,720 View
Mega JPMORGAN CHASE & CO $27,705,238 0.57% 99,391 View
Small Tikvah Management LLC $27,271,227 0.56% 97,834 View
Small Hound Partners, LLC $27,240,565 0.56% 97,724 View
Mega AQR CAPITAL MANAGEMENT LLC $26,355,531 0.54% 94,549 View
Large Boston Trust Walden Corp $26,061,731 0.53% 93,495 View
Small JNE Partners LLP $25,672,875 0.52% 92,100 View
Large NATIONAL BANK OF CANADA /FI/ $25,087,500 0.51% 90,000 View
Large ING GROEP NV $25,087,500 0.51% 90,000 View
Large Allspring Global Investments Holdings, LLC $23,962,743 0.49% 85,965 View
Micro QVIDTVM Management LLC $23,340,295 0.48% 83,732 View
Large NATIXIS ADVISORS, LLC $20,919,351 0.43% 75,047 View
Mega PRICE T ROWE ASSOCIATES INC /MD/ $20,705,828 0.42% 74,281 View
Mid Hosking Partners LLP $19,236,258 0.39% 69,009 View
Large Man Group plc $18,797,784 0.38% 67,436 View
Large SG Americas Securities, LLC $18,672,068 0.38% 66,985 View
Mid EXCHANGE TRADED CONCEPTS, LLC $16,315,236 0.33% 58,530 View
Mega MORGAN STANLEY $15,500,728 0.32% 55,608 View
Mid Marathon Asset Management Ltd $14,958,003 0.31% 53,661 View
Mega GOLDMAN SACHS GROUP INC $14,784,899 0.30% 53,040 View
Large Select Equity Group, L.P. $13,501,535 0.28% 48,436 View
Large HRT FINANCIAL LP $12,977,485 0.27% 46,556 View
Mega RHUMBLINE ADVISERS $12,832,813 0.26% 46,037 View
Mid Arnhold LLC $11,958,932 0.24% 42,902 View
Mega PRINCIPAL FINANCIAL GROUP INC $11,321,151 0.23% 40,614 View
Large ASSETMARK, INC $10,868,183 0.22% 38,989 View
Mega Amundi $10,809,367 0.22% 38,778 View
Mega Swiss National Bank $10,280,300 0.21% 36,880 View
Mega Invesco Ltd. $10,267,755 0.21% 36,835 View
Mega Legal & General Group Plc $10,098,553 0.21% 36,228 View
Mega RAYMOND JAMES FINANCIAL INC $10,005,452 0.20% 35,894 View
Mega California Public Employees Retirement System $9,853,255 0.20% 35,348 View
Large Quantinno Capital Management LP $9,379,937 0.19% 33,650 View
Large MARSHALL WACE, LLP $9,259,238 0.19% 33,217 View
Mid TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY $8,670,240 0.18% 31,104 View
Small Almitas Capital LLC $8,433,302 0.17% 30,254 View
Mega Nuveen, LLC $8,199,988 0.17% 29,417 View
Large GABELLI FUNDS LLC $7,916,500 0.16% 28,400 View
Mid GAMCO INVESTORS, INC. ET AL $7,456,562 0.15% 26,750 View
Mega BNP PARIBAS ARBITRAGE, SA $7,338,372 0.15% 26,326 View
Mega ALLIANCEBERNSTEIN L.P. $6,825,751 0.14% 24,487 View
Small WINSLOW ASSET MANAGEMENT INC $6,737,108 0.14% 24,169 View
Small SECTOR GAMMA AS $6,620,312 0.14% 23,750 View
Large Retirement Systems of Alabama $6,213,058 0.13% 22,289 View
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM $6,113,545 0.12% 21,932 View
Mega WELLS FARGO & COMPANY/MN $5,761,482 0.12% 20,669 View
Mega VAN ECK ASSOCIATES CORP $5,421,686 0.11% 19,450 View
Mega VICTORY CAPITAL MANAGEMENT INC $5,195,621 0.11% 18,639 View
Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM $5,121,195 0.10% 18,372 View
Large LAZARD ASSET MANAGEMENT LLC $5,098,337 0.10% 18,290 View
Mega AMERIPRISE FINANCIAL INC $5,023,911 0.10% 18,023 View
Mega ROYAL BANK OF CANADA $4,793,940 0.10% 17,198 View
Mega LPL Financial LLC $4,526,900 0.09% 16,240 View
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM $4,460,836 0.09% 16,003 View
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $4,388,361 0.09% 15,743 View
Mega HSBC HOLDINGS PLC $4,344,318 0.09% 15,585 View
Large Russell Investments Group, Ltd. $4,318,949 0.09% 15,494 View
Mid Portolan Capital Management, LLC $3,950,723 0.08% 14,173 View
Large Universal- Beteiligungs- und Servicegesellschaft mbH $3,719,640 0.08% 13,344 View
Large STATE OF WISCONSIN INVESTMENT BOARD $3,644,377 0.07% 13,074 View
Large FIFTH THIRD BANCORP $3,604,795 0.07% 12,932 View
Large DekaBank Deutsche Girozentrale $3,403,816 0.07% 12,211 View
Large NEW YORK STATE COMMON RETIREMENT FUND $3,310,156 0.07% 11,875 View
Mega TWO SIGMA INVESTMENTS, LP $3,062,905 0.06% 10,988 View
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