Bio-Rad Laboratories, Inc.
US ˙ NYSE ˙ US0905722072

SecurityBIO / Bio-Rad Laboratories, Inc.
InstitutionEarnest Partners Llc
Latest Disclosed Ownership588,731 shares
Latest Disclosed Value $ 164,108,766
Earnest Partners Llc reports 2.46% decrease in ownership of BIO / Bio-Rad Laboratories, Inc.

On May 15, 2026 - Earnest Partners Llc filed a 13F-HR form disclosing ownership of 588,731 shares of Bio-Rad Laboratories, Inc. (US:BIO) valued at $164,108,766 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 603,594 shares of Bio-Rad Laboratories, Inc.. This represents a change in shares of -2.46% during the quarter. The current value of the position is $173,275,308 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F BIO RAD LABS CL A 090572207 588,731 -14,863 -2.46 164,109 -10.27 0.6766
2026-02-12 2025-12-31 13F BIO RAD LABS CL A 090572207 603,594 -5,690 -0.93 182,883 7.05 0.7837
2025-11-14 2025-09-30 13F BIO RAD LABS CL A 090572207 609,284 3,398 0.56 170,837 16.84 0.7411
2025-08-15 2025-06-30 13F BIO RAD LABS CL A 090572207 605,886 6,265 1.04 146,212 0.12 0.6591
2025-05-14 2025-03-31 13F BIO RAD LABS CL A 090572207 599,621 -18,428 -2.98 146,044 -28.07 0.6993
2025-02-14 2024-12-31 13F BIO RAD LABS CL A 090572207 618,049 12,500 2.06 203,035 0.21 0.9074
2024-11-14 2024-09-30 13F BIO RAD LABS CL A 090572207 605,549 -1,239 -0.20 202,605 22.26 0.8822
2024-08-14 2024-06-30 13F BIO RAD LABS CL A 090572207 606,788 91,882 17.84 165,720 -6.95 0.7748
2024-05-15 2024-03-31 13F BIO RAD LABS CL A 090572207 514,906 121,272 30.81 178,091 40.12 0.8154
2024-02-14 2023-12-31 13F BIO RAD LABS CL A 090572207 393,634 42,124 11.98 127,100 0.87 0.6346
2023-11-14 2023-09-30 13F BIO RAD LABS CL A 090572207 351,510 71,570 25.57 125,999 18.72 0.7267
2023-08-07 2023-06-30 13F BIO-RAD LABS-A COM 090572207 279,940 26,476 10.45 106,131 -12.59 0.5932
2023-05-15 2023-03-31 13F BIO-RAD LABS-A COM 090572207 253,464 8,519 3.48 121,414 17.88 0.7022
2023-02-14 2022-12-31 13F BIO-RAD LABS-A COM 090572207 244,945 14,265 6.18 102,997 7.04 0.6313
2022-11-14 2022-09-30 13F BIO-RAD LABS-A COM 090572207 230,680 6,464 2.88 96,226 -13.30 0.6464
2022-08-12 2022-06-30 13F BIO-RAD LABS-A COM 090572207 224,216 32,275 16.82 110,987 2.66 0.7393
2022-05-16 2022-03-31 13F BIO-RAD LABS-A COM 090572207 191,941 1,360 0.71 108,107 -24.92 0.6403
2022-02-07 2021-12-31 13F BIO-RAD LABS-A COM 090572207 190,581 18,419 10.70 143,997 12.13 0.8306
2021-11-15 2021-09-30 13F BIO-RAD LABS-A COM 090572207 172,162 -2,257 -1.29 128,424 14.28 0.7849
2021-08-16 2021-06-30 13F BIO-RAD LABS-A COM 090572207 174,419 7,410 4.44 112,376 17.81 0.6603
2021-05-17 2021-03-31 13F BIO-RAD LABS-A COM 090572207 167,009 15,547 10.26 95,391 8.04 0.5698
2021-02-16 2020-12-31 13F BIO-RAD LABS-A COM 090572207 151,462 8,286 5.79 88,293 19.63 0.6100
2020-11-16 2020-09-30 13F BIO-RAD LABS-A COM 090572207 143,176 10,780 8.14 73,802 23.47 0.6367
2020-08-13 2020-06-30 13F BIO-RAD LABS-A COM 090572207 132,396 8,558 6.91 59,775 37.69 0.5647
2020-05-14 2020-03-31 13F BIO-RAD LABS-A COM 090572207 123,838 2,872 2.37 43,413 -3.01 0.4892
2020-02-07 2019-12-31 13F BIO-RAD LABS-A COM 090572207 120,966 12,889 11.93 44,761 24.47 0.3518
2019-11-14 2019-09-30 13F BIO-RAD LABS-A COM 090572207 108,077 174 0.16 35,962 6.62 0.3249
2019-08-13 2019-06-30 13F BIO-RAD LABS-A COM 090572207 107,903 5,111 4.97 33,729 7.35 0.3048
2019-05-15 2019-03-31 13F BIO-RAD LABS-A COM 090572207 102,792 -1,626 -1.56 31,421 29.58 0.3002
2019-02-14 2018-12-31 13F BIO-RAD LABS-A COM 090572207 104,418 164 0.16 24,248 -25.69 0.2640
2018-11-14 2018-09-30 13F BIO-RAD LABS-A COM 090572207 104,254 -2,471 -2.32 32,630 5.96 0.2923
2018-08-13 2018-06-30 13F BIO-RAD LABS-A COM 090572207 106,725 -2,332 -2.14 30,794 12.91 0.2880
2018-05-15 2018-03-31 13F BIO-RAD LABS-A COM 090572207 109,057 -250 -0.23 27,273 4.54 0.2579
2018-02-14 2017-12-31 13F BIO-RAD LABS-A COM 090572207 109,307 -5,464 -4.76 26,088 2.29 0.2498
2017-11-14 2017-09-30 13F BIO-RAD LABS-A COM 090572207 114,771 -2,458 -2.10 25,504 -3.87 0.2541
2017-08-14 2017-06-30 13F BIO-RAD LABS-A COM 090572207 117,229 -6,367 -5.15 26,530 7.68 0.2787
2017-05-15 2017-03-31 13F BIO-RAD LABS-A COM 090572207 123,596 -1,730 -1.38 24,638 7.85 0.2628
2017-02-14 2016-12-31 13F BIO-RAD LABS-A COM 090572207 125,326 -5,646 -4.31 22,844 6.47 0.2494
2016-11-14 2016-09-30 13F BIO-RAD LABS-A COM 090572207 130,972 -2,727 -2.04 21,455 12.20 0.2250
2016-08-15 2016-06-30 13F BIO-RAD LABS-A COM 090572207 133,699 -2,157 -1.59 19,122 2.95 0.2075
2016-05-16 2016-03-31 13F BIO-RAD LABS-A COM 090572207 135,856 816 0.60 18,574 -0.81 0.1946
2016-02-16 2015-12-31 13F BIO-RAD LABS-A COM 090572207 135,040 -3,131 -2.27 18,725 0.90 0.1910
2015-11-16 2015-09-30 13F BIO-RAD LABS-A COM 090572207 138,171 -15,808 -10.27 18,558 -19.98 0.1823
2015-08-14 2015-06-30 13F BIO-RAD LABS-A COM 090572207 153,979 -2,505 -1.60 23,191 9.63 0.2026
2015-05-15 2015-03-31 13F BIO-RAD LABS-A COM 090572207 156,484 -5,008 -3.10 21,154 8.65 0.1821
2015-02-17 2014-12-31 13F BIO-RAD LABS-A COM 090572207 161,492 -6,398 -3.81 19,469 2.26 0.1598
2014-11-14 2014-09-30 13F Bio-Rad Laboratories COM 090572207 167,890 -4,599 -2.67 19,039 -7.80 0.1592
2014-08-14 2014-06-30 13F BIO-RAD LABS-A COM 090572207 172,489 -4,948 -2.79 20,649 -9.17 0.1644
2014-05-15 2014-03-31 13F Bio-Rad Laboratories COM 090572207 177,437 498 0.28 22,733 3.94 0.1823
2014-02-14 2013-12-31 13F Bio-Rad Laboratories COM 090572207 176,939 176,939 21,871 0.1754
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.