BIO-RAD LABORATORIES, INC. (BIO) Stock
4 members of Congress disclosed 7 trades in BIO since 2015: 2 purchases and 5 sales, most recently Lois Frankel (sale, Sep 8, 2023). 4 of the hedge funds AlphaScala tracks reported BIO in 13F filings for the quarter ended Jun 30, 2026; the largest reported position is Citadel's at $17.86M.
Which members of Congress traded BIO-RAD LABORATORIES, INC. (BIO)?
Most recent: Lois Frankel (sale, Sep 8, 2023); records start Feb 13, 2015.
| Politician | Trade date | Type | Amount |
|---|---|---|---|
| Lois Frankel D-FL · House | 2023-09-08 | sale | $1k – $15k |
| Lois Frankel D-FL · House | 2023-06-29 | purchase | $1k – $15k |
| Lois Frankel D-FL · House | 2023-06-28 | purchase | $1k – $15k |
| Susie Lee D-NV · House | 2022-11-30 | sale | $1k – $15k |
| Susie Lee D-NV · House | 2021-01-05 | partial sale | $1k – $15k |
| Tom MacArthur R-NJ · House | 2015-05-27 | sale | $1k – $15k |
| Thom Tillis R-NC · Senate | 2015-02-13 | sale | $1k – $15k |
From STOCK Act periodic transaction reports. House filings as of Nov 5, 2026. Senate records here end Oct 21, 2026; later Senate trades are not included.
See all BIO political trades →Which hedge funds own BIO?
From 13F filings| Fund | Shares Held | Position Value | Change vs prior Q |
|---|---|---|---|
| Citadel Ken Griffin | 61K | $17.86M | -59% |
| Millennium Management Israel Englander | 60K | $17.59M | +1718% |
| D.E. Shaw David Shaw | 19K | $5.65M | +136% |
| Marshall Wace | 19K | $5.57M | -43% |
13F holdings as of Jun 30, 2026
Explore all tracked funds →BIO price chart
Powered by TradingViewWhat does BIO-RAD LABORATORIES, INC. do?
Bio-Rad Laboratories Inc. operates as a leading manufacturer and distributor of life science research products and clinical diagnostics systems. Established in 1952 and headquartered in Hercules, California, the company plays a pivotal role in the healthcare and medical research sectors. Bio-Rad provides a broad range of products for life science research, including reagents, instruments, and software used for techniques such as gel electrophoresis, chromatography, and polymerase chain reaction (PCR). These tools facilitate advancements in biology and medical research, aiding in the discovery of genetic information and the analysis of cell functions. In the clinical diagnostics realm, Bio-Rad offers solutions used to identify, track, and diagnose diseases through blood and tissue analysis, impacting critical areas like diabetes testing, blood typing, and autoimmune disease testing. With a comprehensive portfolio that supports innovation and efficiency in research laboratories and hospitals, Bio-Rad Laboratories Inc. significantly contributes to the improvement of diagnostic procedures and research methodologies, cementing its role as a key player in the enhancement of global health and medical science.