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

SecurityBIO / Bio-Rad Laboratories, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership1,089,323 shares
Latest Disclosed Value $ 303,636,693
Dimensional Fund Advisors Lp reports 1.14% increase in ownership of BIO / Bio-Rad Laboratories, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 1,089,323 shares of Bio-Rad Laboratories, Inc. (US:BIO) valued at $303,648,786 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,077,072 shares of Bio-Rad Laboratories, Inc.. This represents a change in shares of 1.14% during the quarter. The current value of the position is $320,609,545 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.

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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)
2026-05-07 2026-03-31 13F BIO RAD LABS CL A 090572207 1,089,323 12,251 1.14 303,637 -6.96 0.0136
2026-02-12 2025-12-31 13F BIO RAD LABS CL A 090572207 1,077,072 14,134 1.33 326,344 9.50 0.0685
2025-11-12 2025-09-30 13F BIO RAD LABS CL A 090572207 1,062,938 63,370 6.34 298,019 23.55 0.0640
2025-08-12 2025-06-30 13F BIO RAD LABS CL A 090572207 999,568 122,528 13.97 241,222 12.93 0.0558
2025-05-13 2025-03-31 13F BIO RAD LABS CL A 090572207 877,040 130,921 17.55 213,608 -12.85 0.0531
2025-02-13 2024-12-31 13F BIO RAD LABS CL A 090572207 746,119 91,690 14.01 245,106 11.94 0.0589
2024-11-07 2024-09-30 13F BIO RAD LABS CL A 090572207 654,429 159,825 32.31 218,955 62.09 0.0531
2024-08-09 2024-06-30 13F BIO RAD LABS CL A 090572207 494,604 193,700 64.37 135,081 29.79 0.0353
2024-05-10 2024-03-31 13F BIO RAD LABS CL A 090572207 300,904 81,334 37.04 104,074 46.79 0.0282
2024-02-07 2023-12-31 13F BIO RAD LABS CL A 090572207 219,570 -402 -0.18 70,900 -10.08 0.0207
2023-11-09 2023-09-30 13F BIO RAD LABS CL A 090572207 219,972 15,966 7.83 78,849 1.95 0.0259
2023-08-09 2023-06-30 13F BIO RAD LABS CL A 090572207 204,006 15,607 8.28 77,340 -14.29 0.0246
2023-05-12 2023-03-31 13F BIO RAD LABS CL A 090572207 188,399 2,265 1.22 90,237 115,588.46 0.0304
2023-02-09 2022-12-31 13F BIO RAD LABS CL A 090572207 186,134 2,920 1.59 78 -99.90 0.0231
2022-11-10 2022-09-30 13F BIO RAD LABS CL A 090572207 183,214 4,635 2.60 76,429 -13.53 0.0293
2022-08-12 2022-06-30 13F BIO RAD LABS CL A 090572207 178,579 1,439 0.81 88,391 -11.43 0.0317
2022-05-13 2022-03-31 13F BIO RAD LABS CLA 090572207 177,140 216 0.12 99,797 -25.35 0.0307
2022-02-09 2021-12-31 13F BIO RAD LABS CLA 090572207 176,924 1,629 0.93 133,682 2.23 0.0404
2021-11-12 2021-09-30 13F BIO RAD LABS CLA 090572207 175,295 -2,095 -1.18 130,770 14.42 0.0421
2021-08-12 2021-06-30 13F BIO RAD LABS CLA 090572207 177,390 3,563 2.05 114,292 15.13 0.0362
2021-05-14 2021-03-31 13F BIO RAD LABS CLA 090572207 173,827 5,897 3.51 99,274 1.42 0.0328
2021-03-08 2020-12-31 13F/A-2 BIO RAD LABS CLA 090572207 167,930 700 0.42 97,880 13.55 0.0353
2021-02-11 2020-12-31 13F BIO RAD LABS CLA 090572207 167,930 700 97,880 35,349.0534
2020-11-12 2020-09-30 13F BIO RAD LABS CLA 090572207 167,230 1,740 1.05 86,197 15.41 0.0366
2020-08-13 2020-06-30 13F BIO RAD LABS CLA 090572207 165,490 4,640 2.88 74,686 32.47 0.0328
2020-05-14 2020-03-31 13F BIO RAD LABS CLA 090572207 160,850 -15,131 -8.60 56,380 -13.42 0.0294
2020-02-14 2019-12-31 13F BIO RAD LABS CLA 090572207 175,981 -7,105 -3.88 65,118 6.88 0.0237
2019-11-12 2019-09-30 13F BIO RAD LABS CLA 090572207 183,086 -15,461 -7.79 60,924 -1.82 0.0237
2019-08-13 2019-06-30 13F BIO RAD LABS CLA 090572207 198,547 -42,573 -17.66 62,052 -15.81 0.0241
2019-08-12 2019-03-31 13F/A-2 BIO RAD LABS CLA 090572207 241,120 20,276 9.18 73,703 43.72 0.0294
2019-05-10 2019-03-31 13F BIO RAD LABS CLA 090572207 241,120 20,276 73,703
2019-02-26 2018-12-31 13F/A-1 BIO RAD LABS CLA 090572207 220,844 30,185 15.83 51,282 -14.06 0.0232
2019-02-13 2018-12-31 13F BIO RAD LABS CLA 090572207 220,844 30,185 51,282
2018-11-13 2018-09-30 13F BIO RAD LABS CLA 090572207 190,659 16,674 9.58 59,672 18.86 0.0227
2018-08-10 2018-06-30 13F BIO RAD LABS CLA 090572207 173,985 -2,077 -1.18 50,202 14.02 0.0200
2018-05-11 2018-03-31 13F BIO RAD LABS CLA 090572207 176,062 -8,258 -4.48 44,030 0.08 0.0184
2018-02-12 2017-12-31 13F BIO RAD LABS CLA 090572207 184,320 -22,644 -10.94 43,995 -4.34 0.0182
2017-11-13 2017-09-30 13F BIO RAD LABS CLA 090572207 206,964 -15,236 -6.86 45,992 -8.53 0.0201
2017-08-11 2017-06-30 13F BIO RAD LABS CLA 090572207 222,200 -50,802 -18.61 50,283 -7.60 0.0232
2017-05-12 2017-03-31 13F BIO RAD LABS CLA 090572207 273,002 1,887 0.70 54,419 10.11 0.0260
2017-02-09 2016-12-31 13F BIO RAD LABS CLA 090572207 271,115 -5,728 -2.07 49,421 8.99 0.0247
2016-11-10 2016-09-30 13F BIO RAD LABS CLA 090572207 276,843 6,685 2.47 45,346 17.38 0.0245
2016-08-09 2016-06-30 13F BIO RAD LABS CLA 090572207 270,158 843 0.31 38,631 4.92 0.0222
2016-05-13 2016-03-31 13F BIO RAD LABS CLA 090572207 269,315 9,695 3.73 36,820 2.27 0.0220
2016-02-10 2015-12-31 13F BIO RAD LABS CLA 090572207 259,620 10,154 4.07 36,001 7.45 0.0224
2015-11-13 2015-09-30 13F BIO RAD LABS CLA 090572207 249,466 5,182 2.12 33,505 -8.93 0.0220
2015-08-14 2015-06-30 13F BIO RAD LABS CLA 090572207 244,284 11,364 4.88 36,792 16.86 0.0225
2015-05-14 2015-03-31 13F BIO RAD LABS CLA 090572207 232,920 53,929 30.13 31,484 45.87 0.0199
2015-02-06 2014-12-31 13F BIO RAD LABS CLA 090572207 178,991 32,006 21.78 21,583 29.45 0.0142
2014-11-13 2014-09-30 13F BIO RAD LABS CLA 090572207 146,985 2,272 1.57 16,673 -3.74 0.0118
2014-08-08 2014-06-30 13F BIO RAD LABS CLA 090572207 144,713 16,297 12.69 17,321 5.29 0.0120
2014-05-14 2014-03-31 13F BIO RAD LABS CLA 090572207 128,416 -107 -0.08 16,450 3.54 0.0123
2014-02-12 2013-12-31 13F BIO RAD LABS CLA 090572207 128,523 12,484 10.76 15,888 16.49 0.0124
2013-11-13 2013-09-30 13F BIO RAD LABS CLA 090572207 116,039 7,370 6.78 13,639 11.87 0.0118
2013-08-15 2013-06-30 13F BIO RAD LABS CLA 090572207 108,669 108,669 12,192 0.0115
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.