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

SecurityBIO / Bio-Rad Laboratories, Inc.
InstitutionDeerfield Management Company, L.p. (series C)
Latest Disclosed Ownership226,070 shares
Latest Disclosed Value $ 63,017,013
Deerfield Management Company, L.p. (series C) ownership in BIO / Bio-Rad Laboratories, Inc.

On May 15, 2026 - Deerfield Management Company, L.p. (series C) filed a 13F-HR form disclosing ownership of 226,070 shares of Bio-Rad Laboratories, Inc. (US:BIO) valued at $63,017,012 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 226,070 shares of Bio-Rad Laboratories, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $68,912,918 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 226,070 0 0.00 63,017 -8.00 0.7434
2026-02-17 2025-12-31 13F BIO RAD LABS CL A 090572207 226,070 0 0.00 68,497 8.06 0.8748
2025-11-14 2025-09-30 13F BIO RAD LABS CL A 090572207 226,070 0 0.00 63,388 16.19 0.9676
2025-08-14 2025-06-30 13F BIO RAD LABS CL A 090572207 226,070 0 0.00 54,555 -0.92 0.9901
2025-05-15 2025-03-31 13F BIO RAD LABS CL A 090572207 226,070 74,426 49.08 55,062 10.53 1.0871
2025-02-14 2024-12-31 13F BIO RAD LABS CL A 090572207 151,644 69 0.05 49,817 -1.77 0.9435
2024-11-14 2024-09-30 13F BIO RAD LABS CL A 090572207 151,575 -139 -0.09 50,714 22.39 0.7577
2024-08-14 2024-06-30 13F BIO RAD LABS CL A 090572207 151,714 -664 -0.44 41,435 -21.38 0.6894
2024-05-15 2024-03-31 13F BIO RAD LABS CL A 090572207 152,378 803 0.53 52,703 7.68 0.9169
2024-02-14 2023-12-31 13F BIO RAD LABS CL A 090572207 151,575 -22,372 -12.86 48,942 -21.51 0.9037
2023-11-14 2023-09-30 13F BIO RAD LABS CL A 090572207 173,947 173,947 62,351 1.3737
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.