BIO-RAD LABORATORIES-A (BIO) Institutional Shareholders
BIO-RAD LABORATORIES-A (BIO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $5.28B in BIO holdings during the latest filing period.
First Eagle U.S. Value is currently the largest disclosed institutional shareholder of BIO tracked by InsiderSet, reporting ownership valued at approximately $725.52M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $847.15M, representing an estimated gain of +16.76% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed BIO value among the investors covered in this analysis. Major shareholders include First Eagle U.S. Value, Blackrock, Inc., Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in BIO-RAD LABORATORIES-A (BIO).
This page ranks the largest institutional BIO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
381
Total Reported Value
$5.28B
Largest Holder
First Eagle U.S. Value
Largest Position
$725.52M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
53
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.96% | 2,602,772 | $725,522,734 | $847,150,231 | +$121,627,497 | +16.76% |
| Blackrock, Inc. | 0.01% | 1,680,060 | $468,316,523 | $546,825,929 | +$78,509,406 | +16.76% | |
| Dimensional Fund Advisors Lp | 0.06% | 1,089,323 | $303,636,693 | $354,552,850 | +$50,916,157 | +16.77% | |
| Vanguard Capital Management Llc | 0.01% | 831,165 | $231,687,244 | $270,527,584 | +$38,840,340 | +16.76% | |
| Vanguard Portfolio Management Llc | 0.01% | 829,186 | $231,135,598 | $269,883,459 | +$38,747,861 | +16.76% | |
| Ariel Appreciation Fund | John W. Rogers Jr. | 2.45% | 785,961 | $219,086,629 | $255,814,586 | +$36,727,957 | +16.76% |
| Earnest Partners Llc | 0.68% | 588,731 | $164,108,766 | $191,620,166 | +$27,511,400 | +16.76% | |
| State Street Corp | 0.01% | 559,570 | $155,980,138 | $182,128,844 | +$26,148,706 | +16.76% | |
| Capital World Investors | 0.02% | 450,000 | $125,437,500 | $146,466,000 | +$21,028,500 | +16.76% | |
| Bank Of America Corp | 0.01% | 444,957 | $124,031,764 | $144,824,604 | +$20,792,840 | +16.76% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.02% | 426,038 | $118,758,094 | $138,666,848 | +$19,908,754 | +16.76% | |
| First Pacific Advisors, Lp | 1.59% | 407,358 | $113,551,043 | $132,586,882 | +$19,035,839 | +16.76% | |
| Massachusetts Financial Services Co | 0.04% | 396,150 | $110,422,710 | $128,938,902 | +$18,516,192 | +16.77% | |
| Capital Research Global Investors | 0.02% | 385,579 | $107,480,146 | $125,498,253 | +$18,018,107 | +16.76% | |
| Geode Capital Management, Llc | 0.01% | 364,682 | $101,678,457 | $118,696,697 | +$17,018,240 | +16.74% | |
| Ubs Group Ag | 0.02% | 354,365 | $98,779,244 | $115,338,720 | +$16,559,476 | +16.76% | |
| Sei Investments Co | 0.07% | 287,912 | $80,260,574 | $93,709,598 | +$13,449,024 | +16.76% | |
| Barclays Plc | 0.03% | 278,835 | $77,725,256 | $90,755,216 | +$13,029,960 | +16.76% | |
| Morgan Stanley | 0.00% | 273,931 | $76,358,666 | $89,159,062 | +$12,800,396 | +16.76% | |
| Assenagon Asset Management S.A. | 0.09% | 233,227 | $68,477,779 | $75,910,724 | +$7,432,945 | +10.85% | |
| Deerfield Management Company, L.P. | 0.74% | 226,070 | $63,017,013 | $73,581,264 | +$10,564,251 | +16.76% | |
| Northern Trust Corp | 0.01% | 218,497 | $60,906,040 | $71,116,404 | +$10,210,364 | +16.76% | |
| Nomura Holdings Inc | 0.50% | 217,342 | $60,584,083 | $70,740,474 | +$10,156,391 | +16.76% | |
| Charles Schwab Investment Management Inc | 0.01% | 196,558 | $54,790,543 | $63,975,698 | +$9,185,155 | +16.76% | |
| Mawer Investment Management Ltd. | 0.34% | 188,784 | $52,623,540 | $61,445,416 | +$8,821,876 | +16.76% | |
| Franklin Resources Inc | 0.01% | 170,354 | $47,486,178 | $55,446,820 | +$7,960,642 | +16.76% | |
| Longleaf Partners | Mason Hawkins | 2.23% | 162,804 | $45,381,615 | $52,989,446 | +$7,607,831 | +16.76% |
| Gotham Asset Management, Llc | 0.13% | 152,384 | $42,477,040 | $49,597,944 | +$7,120,904 | +16.76% | |
| Citadel Advisors Llc | 0.03% | 148,669 | $41,441,484 | $48,388,786 | +$6,947,302 | +16.76% | |
| Freestone Grove Partners Lp | 0.30% | 147,605 | $41,144,894 | $48,042,475 | +$6,897,581 | +16.76% | |
| Bank Of New York Mellon Corp | 0.01% | 126,856 | $35,361,235 | $41,289,091 | +$5,927,856 | +16.76% | |
| Mangrove Partners Im, Llc | 2.86% | 126,853 | $35,360,274 | $41,288,114 | +$5,927,840 | +16.76% | |
| Cibc Bancorp Usa Inc. | 0.05% | 120,120 | $33,483,450 | $39,096,658 | +$5,613,208 | +16.76% | |
| Fisher Asset Management, Llc | 0.01% | 118,683 | $33,082,885 | $38,628,943 | +$5,546,058 | +16.76% | |
| Boston Trust Walden Corp | 0.25% | 111,167 | $32,639,743 | $36,182,635 | +$3,542,892 | +10.85% | |
| Vanguard Fiduciary Trust Co | 0.01% | 113,639 | $31,676,871 | $36,987,222 | +$5,310,351 | +16.76% | |
| Allianz Asset Management Gmbh | 0.04% | 110,241 | $30,729,679 | $35,881,241 | +$5,151,562 | +16.76% | |
| Federated Hermes, Inc. | 0.05% | 109,895 | $30,633,233 | $35,768,625 | +$5,135,392 | +16.76% | |
| Envestnet Asset Management Inc | 0.01% | 105,333 | $29,361,526 | $34,283,785 | +$4,922,259 | +16.76% | |
| Manufacturers Life Insurance Company, The | 0.02% | 99,720 | $27,796,950 | $32,456,866 | +$4,659,916 | +16.76% | |
| Tikvah Management Llc | 8.45% | 97,834 | $27,271,228 | $31,843,010 | +$4,571,782 | +16.76% | |
| Hound Partners, Llc | 3.44% | 97,724 | $27,240,565 | $31,807,208 | +$4,566,643 | +16.76% | |
| Aqr Capital Management Llc | 0.01% | 94,549 | $26,027,466 | $30,773,809 | +$4,746,343 | +18.24% | |
| Jne Partners Llp | 10.50% | 92,100 | $25,672,875 | $29,976,708 | +$4,303,833 | +16.76% | |
| Ing Groep Nv | 0.15% | 90,000 | $25,087,500 | $29,293,200 | +$4,205,700 | +16.76% | |
| National Bank Of Canada | 0.03% | 90,000 | $25,087,500 | $29,293,200 | +$4,205,700 | +16.76% | |
| Allspring Global Investments Holdings, Llc | 0.04% | 85,965 | $23,929,217 | $27,979,888 | +$4,050,671 | +16.93% | |
| Qvidtvm Management Llc | 28.68% | 83,732 | $23,340,295 | $27,253,091 | +$3,912,796 | +16.76% | |
| Exchange Traded Concepts, Llc | 0.10% | 72,116 | $21,173,979 | $23,472,316 | +$2,298,337 | +10.85% | |
| Hosking Partners Llp | 0.69% | 69,009 | $19,236,259 | $22,461,049 | +$3,224,790 | +16.76% |
Frequently asked questions about BIO
Who owns the most BIO stock?
The largest holders of BIO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for BIO-RAD LABORATORIES-A (BIO).
Is BIO widely held by superinvestors?
Many widely followed stocks like BIO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly BIO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.