BIO
Bio-rad Laboratories-a
4 of the 83 super-investors we track hold BIO, worth a combined $1.14B per their latest 13F filings. The largest position: John Rogers at 2.4% of their portfolio. This quarter the cohort logged 0 buys and 1 sell on the name. Conviction score: 26 of 100 (how strongly the cohort backs it) — ranked #485 of 742 stocks. Conviction easing: 1 fewer super-investor hold it than in 2026Q1.
Why super-investors own BIO
BIO is held by 4 super-investors in our cohort, with a combined position value of $1.1B. The highest-conviction owner is John Rogers at 2.4% of their portfolio. Cohort ownership has shrunk from 5 to 4 over the last four quarters — net interest is fading. This quarter the cohort registered 1 exited.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q3 → 2026Q2How many of the cohort members held this stock each quarter.
Owners (4) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | First Eagle Investment Management | 1.3% | 13q | $765M | 2,606,219 |
| 2 | John Rogers | 2.4% | 40q | $240M | 816,751 |
| 3 | First Pacific Advisors | 1.5% | 11q | $118M | 401,861 |
| 4 | Joel Greenblatt | <0.1% | 38q | $18M | 60,819 |
Owners of BIO also hold
Congress is trading BIO
Congress tracker →- Lois Frankelsold$1,001 - $15,000 · 2023-09-08
- Lois Frankelbought$1,001 - $15,000 · 2023-06-29
- Lois Frankelbought$1,001 - $15,000 · 2023-06-28
- Susie Leesold$1,001 - $15,000 · 2022-11-30
- Thomas H Tubervillesold$1,001 - $15,000 · 2022-03-30
- Thomas H Tubervillebought$1,001 - $15,000 · 2021-03-29 · late
STOCK Act periodic transaction reports; amounts are disclosed ranges. Who files late →
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Mason Hawkins | EXIT | 2.2% | -100% | $0 | Aug 14, 2026 |
Long US equity 13F-HR filings only. CUSIP 090572207. Not investment advice.