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

SecurityBIO / Bio-Rad Laboratories, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership218,497 shares
Latest Disclosed Value $ 60,906,040
Northern Trust Corp reports 1.08% increase in ownership of BIO / Bio-Rad Laboratories, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 218,497 shares of Bio-Rad Laboratories, Inc. (US:BIO) valued at $60,906,039 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 216,171 shares of Bio-Rad Laboratories, Inc.. This represents a change in shares of 1.08% during the quarter. The current value of the position is $66,604,441 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)
2026-05-14 2026-03-31 13F BIO RAD LABS CL A 090572207 218,497 2,326 1.08 60,906 -7.01 0.0017
2026-02-17 2025-12-31 13F BIO RAD LABS CL A 090572207 216,171 -9,835 -4.35 65,498 3.36 0.0017
2025-11-14 2025-09-30 13F BIO RAD LABS CL A 090572207 226,006 -499 -0.22 63,370 15.93 0.0081
2025-08-13 2025-06-30 13F BIO RAD LABS CL A 090572207 226,505 -34,617 -13.26 54,660 -14.05 0.0075
2025-05-13 2025-03-31 13F BIO RAD LABS CL A 090572207 261,122 254 0.10 63,599 -25.79 0.0094
2025-02-14 2024-12-31 13F BIO RAD LABS CL A 090572207 260,868 51,048 24.33 85,698 22.07 0.0121
2024-11-13 2024-09-30 13F BIO RAD LABS COM 090572207 209,820 -38,908 -15.64 70,202 3.34 0.0115
2024-08-14 2024-06-30 13F BIO RAD LABS COM 090572207 248,728 -4,805 -1.90 67,930 -22.53 0.0114
2024-05-14 2024-03-31 13F BIO RAD LABS COM 090572207 253,533 1,138 0.45 87,689 7.60 0.0152
2024-02-13 2023-12-31 13F BIO RAD LABS COM 090572207 252,395 -9,265 -3.54 81,496 -13.11 0.0148
2023-11-13 2023-09-30 13F BIO RAD LABS COM 090572207 261,660 16,808 6.86 93,792 1.04 0.0182
2023-08-11 2023-06-30 13F BIO RAD LABS COM 090572207 244,852 -16,459 -6.30 92,828 -25.84 0.0178
2023-05-15 2023-03-31 13F BIO RAD LABS COM 090572207 261,311 1,859 0.72 125,173 14.74 0.0248
2023-02-13 2022-12-31 13F BIO RAD LABS COM 090572207 259,452 10,972 4.42 109,097 5.25 0.0229
2022-11-14 2022-09-30 13F BIO RAD LABS COM 090572207 248,480 -4,770 -1.88 103,651 -17.32 0.0237
2022-08-12 2022-06-30 13F BIO RAD LABS COM 090572207 253,250 -997 -0.39 125,360 -12.46 0.0269
2022-05-13 2022-03-31 13F BIO RAD LABS COM 090572207 254,247 -239 -0.09 143,200 -25.53 0.0252
2022-02-08 2021-12-31 13F BIO RAD LABS CL A 090572207 254,486 -5,876 -2.26 192,282 -1.00 0.0315
2021-11-15 2021-09-30 13F BIO RAD LABS CL A 090572207 260,362 -13,766 -5.02 194,217 9.96 0.0344
2021-08-13 2021-06-30 13F BIO RAD LABS CL A 090572207 274,128 17,163 6.68 176,619 20.34 0.0311
2021-05-12 2021-03-31 13F BIO RAD LABS CL A 090572207 256,965 -1,460 -0.56 146,771 -2.57 0.0273
2021-02-11 2020-12-31 13F BIO RAD LABS CL A 090572207 258,425 1,676 0.65 150,646 13.83 0.0293
2020-11-16 2020-09-30 13F BIO RAD LABS CL A 090572207 256,749 -670 -0.26 132,344 13.87 0.0290
2020-08-14 2020-06-30 13F BIO RAD LABS COM 090572207 257,419 21,322 9.03 116,223 40.42 0.0275
2020-05-14 2020-03-31 13F BIO RAD LABS CL A 090572207 236,097 6,319 2.75 82,766 -2.66 0.0238
2020-02-14 2019-12-31 13F BIO RAD LABS CL A 090572207 229,778 34,967 17.95 85,024 31.17 0.0190
2019-11-13 2019-09-30 13F BIO RAD LABS COM 090572207 194,811 4,186 2.20 64,822 8.79 0.0155
2019-08-13 2019-06-30 13F BIO RAD LABS CL A 090572207 190,625 -3 -0.00 59,587 2.26 0.0141
2019-05-13 2019-03-31 13F BIO RAD LABS CL A 090572207 190,628 4,256 2.28 58,271 34.64 0.0144
2019-02-12 2018-12-31 13F BIO RAD LABS CL A 090572207 186,372 831 0.45 43,279 -25.47 0.0121
2018-11-14 2018-09-30 13F BIO RAD LABS CL A 090572207 185,541 -1,352 -0.72 58,072 7.69 0.0142
2018-09-18 2018-06-30 13F/A-1 BIO RAD LABS CL A 090572207 186,893 -908 -0.48 53,926 14.82 0.0137
2018-08-14 2018-06-30 13F BIO RAD LABS CL A 090572207 188,824 1,023 54,483
2018-05-09 2018-03-31 13F BIO RAD LABS CL A 090572207 187,801 949 0.51 46,965 5.31 0.0122
2018-02-14 2017-12-31 13F BIO RAD LABS CL A 090572207 186,852 -19,539 -9.47 44,596 -2.76 0.0113
2017-11-13 2017-09-30 13F BIO RAD LABS CL A 090572207 206,391 -8,081 -3.77 45,864 -5.51 0.0120
2017-08-11 2017-06-30 13F BIO RAD LABS COM 090572207 214,472 -58,739 -21.50 48,537 -10.88 0.0136
2017-05-12 2017-03-31 13F BIO RAD LABS COM 090572207 273,211 54,142 24.71 54,462 36.38 0.0157
2017-02-13 2016-12-31 13F BIO RAD LABS COM 090572207 219,069 -22,058 -9.15 39,933 1.10 0.0122
2016-11-09 2016-09-30 13F BIO RAD LABS COM 090572207 241,127 1,297 0.54 39,499 15.16 0.0123
2016-08-12 2016-06-30 13F BIO RAD LABS CL A 090572207 239,830 -4,243 -1.74 34,300 3.05 0.0111
2016-08-19 2016-03-31 13F/A-1 BIO RAD LABS CL A 090572207 244,073 8,988 3.82 33,284 2.11 0.0110
2016-05-13 2016-03-31 13F Bio Rad Labs COMM 090572207 244,071 33,369
2016-02-12 2015-12-31 13F Bio Rad Labs COMM 090572207 235,085 6,487 2.84 32,597 6.17 0.0108
2015-11-12 2015-09-30 13F Bio Rad Labs COMM 090572207 228,598 -1,251 -0.54 30,704 -11.30 0.0102
2015-08-13 2015-06-30 13F BIO RAD LABS COM 090572207 229,849 -47,653 -17.17 34,617 -7.72 0.0235
2015-05-14 2015-03-31 13F Bio Rad Labs COMM 090572207 277,502 8,345 3.10 37,513 15.60 0.0113
2015-02-12 2014-12-31 13F Bio Rad Labs COM 090572207 269,157 1,064 0.40 32,450 6.74 0.0098
2014-11-13 2014-09-30 13F Bio Rad Labs COMM 090572207 268,093 -587 -0.22 30,402 -5.48 0.0095
2014-08-14 2014-06-30 13F BIO RAD LABS com 090572207 268,680 8,112 3.11 32,164 -3.65 0.0100
2014-05-14 2014-03-31 13F BIO RAD LABS COMM 090572207 260,568 494 0.19 33,384 3.84 0.0105
2014-02-21 2013-12-31 13F/A-1 BIO RAD LABS COM 090572207 260,074 2,819 1.10 32,148 6.30 0.0103
2014-02-12 2013-12-31 13F BIO RAD LABS COM 090572207 260,074 32,148
2013-11-13 2013-09-30 13F BIO RAD LABS COM 090572207 257,255 15,444 6.39 30,243 11.47 0.0107
2013-08-09 2013-06-30 13F BIO RAD LABS COM 090572207 241,811 241,811 27,131 0.0098
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.