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

SecurityBIO / Bio-Rad Laboratories, Inc.
InstitutionFirst Manhattan Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
First Manhattan Co closes position in BIO / Bio-Rad Laboratories, Inc.

On May 15, 2026 - First Manhattan Co filed a 13F-HR form disclosing ownership of 0 shares of Bio-Rad Laboratories, Inc. (US:BIO) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Bio-Rad Laboratories, Inc.. The current value of the position is $0 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)
2026-05-15 2026-03-31 13F BIO RAD LABS CL A 090572207 0 -100.00 0
2026-02-17 2025-12-31 13F BIO RAD LABS CL A 090572207 0 -100.00 0
2026-02-17 2025-12-31 13F BIO RAD LABS CL A 090572207 1,915 -200 -9.46 580 -2.19 0.0015
2025-11-14 2025-09-30 13F BIO RAD LABS CL A 090572207 2,115 -1,950 -47.97 593 -39.49 0.0016
2025-08-14 2025-06-30 13F BIO RAD LABS CL A 090572207 4,065 -40 -0.97 981 -1.90 0.0028
2025-05-15 2025-03-31 13F BIO RAD LABS CL A 090572207 4,105 -600 -12.75 1,000 -35.34 0.0029
2025-02-14 2024-12-31 13F BIO RAD LABS CL A 090572207 4,705 -870 -15.61 1,546 -17.16 0.0045
2024-11-14 2024-09-30 13F BIO RAD LABS CL A 090572207 5,575 -525 -8.61 1,865 12.01 0.0055
2024-08-15 2024-06-30 13F/A-1 BIO RAD LABS CL A 090572207 6,100 -1,610 -20.88 1,666 -37.55 0.0053
2024-08-14 2024-06-30 13F BIO RAD LABS CL A 090572207 6,100 -1,610 1,666 0.0053
2024-05-15 2024-03-31 13F BIO RAD LABS CL A 090572207 7,710 -741 -8.77 2,667 -2.27 0.0086
2024-02-13 2023-12-31 13F BIO RAD LABS CL A 090572207 8,451 -72,925 -89.61 2,729 -89.88 0.0095
2023-11-14 2023-09-30 13F BIO RAD LABS CL A 090572207 81,376 81,376 26,948 0.0995
2023-05-15 2023-03-31 13F BIO RAD LABS CL A 090572207 0 -13 -100.00 0 -100.00
2023-02-14 2022-12-31 13F BIO RAD LABS CL A 090572207 13 13 5 0.0000
2022-11-14 2022-09-30 13F BIO RAD LABS CL A 090572207 0 -250 -100.00 0 -100.00
2022-08-15 2022-06-30 13F BIO RAD LABS CL A 090572207 250 0 0.00 123 -12.14 0.0005
2022-05-16 2022-03-31 13F BIO RAD LABS CL A 090572207 250 0 0.00 140 -25.53 0.0005
2022-02-14 2021-12-31 13F BIO RAD LABS CL A 090572207 250 0 0.00 188 1.08 0.0006
2021-11-15 2021-09-30 13F BIO RAD LABS CL A 090572207 250 0 0.00 186 15.53 0.0007
2021-08-16 2021-06-30 13F BIO RAD LABS CL A 090572207 250 0 0.00 161 13.38 0.0006
2021-05-14 2021-03-31 13F BIO RAD LABS CL A 090572207 250 0 0.00 142 -2.07 0.0006
2021-02-16 2020-12-31 13F BIO RAD LABS CL A 090572207 250 0 0.00 145 13.28 0.0007
2020-11-12 2020-09-30 13F BIO RAD LABS CLASS A 090572207 250 0 0.00 128 14.29 0.0007
2020-08-14 2020-06-30 13F BIO RAD LABS CLASS A 090572207 250 0 0.00 112 28.74 0.0006
2020-05-06 2020-03-31 13F BIO RAD LABS CLASS A 090572207 250 0 0.00 87 -5.43 0.0006
2020-02-13 2019-12-31 13F BIO RAD LABS CLASS A 090572207 250 0 0.00 92 10.84 0.0005
2019-11-13 2019-09-30 13F BIO RAD LABS CLASS A 090572207 250 -349 -58.26 83 -55.61 0.0005
2019-08-16 2019-06-30 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 187 2.19 0.0010
2019-04-12 2019-03-31 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 183 31.65 0.0011
2019-01-30 2018-12-31 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 139 -25.67 0.0009
2018-10-15 2018-09-30 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 187 8.72 0.0010
2018-08-01 2018-06-30 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 172 15.44 0.0010
2018-04-20 2018-03-31 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 149 4.93 0.0008
2018-01-22 2017-12-31 13F BIO RAD LABS CLASS A 090572207 599 0 0.00 142 6.77 0.0008
2017-10-25 2017-09-30 13F BIO RAD LABS CLASS A 090572207 599 250 71.63 133 70.51 0.0008
2017-08-10 2017-06-30 13F/A-2 BIO RAD LABS CLASS A 090572207 349 0 0.00 78 13.04 0.0005
2017-08-01 2017-06-30 13F/A-1 BIO RAD LABS CLASS A 090572207 349 0 78 0.0005
2017-04-25 2017-03-31 13F/A-1 BIO RAD LABS CLASS A 090572207 349 0 0.00 69 9.52 0.0004
2017-04-24 2017-03-31 13F BIO RAD LABS CLASS A 090572207 349 57
2017-01-25 2016-12-31 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 63 10.53 0.0004
2016-10-20 2016-09-30 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 57 16.33 0.0003
2016-07-14 2016-06-30 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 49 4.26 0.0003
2016-04-22 2016-03-31 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 47 -2.08 0.0003
2016-01-20 2015-12-31 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 48 4.35 0.0003
2015-10-26 2015-09-30 13F BIO RAD LABS CLASS A 090572207 349 0 0.00 46 -11.54 0.0003
2015-07-17 2015-06-30 13F BIO RAD LABS CLASS A 090572207 349 -119 -25.43 52 -17.46 0.0003
2015-04-30 2015-03-31 13F BIO RAD LABS CLASS A 090572207 468 0 0.00 63 12.50 0.0004
2015-01-20 2014-12-31 13F BIO RAD LABS CLASS A 090572207 468 468 56 0.0003
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.