# BIO RAD LABS INC (BIO) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 090572207
Page URL: https://superinvestorclub.com/stock/BIO
Last updated: 2026-08-29T13:46:03.438Z

## Summary

As of the most recent 13F filing period, BIO RAD LABS INC (BIO) is held by 3 tracked superinvestors with an aggregate position value of $1.89B representing 05212438816751401861 shares.

## Top institutional holders (3)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [First Eagle](https://superinvestorclub.com/manager/21222) | First Eagle Investment Management | 5212438 | $1.53B | 1.27% | 2026-06-30 |
| 2 | [John Rogers](https://superinvestorclub.com/manager/76) | Ariel Investments | 816751 | $239.8M | 2.39% | 2026-06-30 |
| 3 | [Steven Romick](https://superinvestorclub.com/manager/289) | First Pacific Advisors | 401861 | $118.0M | 1.46% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2023-06-30: 1 holders, $72,412 aggregate, 0191 shares
- 2023-09-30: 1 holders, $164,170 aggregate, 0458 shares
- 2023-12-31: 1 holders, $154,664 aggregate, 0479 shares
- 2024-03-31: 2 holders, $119.6M aggregate, 03439591964 shares
- 2024-06-30: 3 holders, $291.0M aggregate, 0636275325013104187 shares
- 2024-09-30: 4 holders, $524.6M aggregate, 0713000378695318336157877 shares
- 2024-12-31: 4 holders, $571.7M aggregate, 0713505560524308469157850 shares
- 2025-03-31: 4 holders, $727.6M aggregate, 01566190724660372555323805 shares
- 2025-06-30: 4 holders, $974.5M aggregate, 02517313818624386949315285 shares
- 2025-09-30: 5 holders, $1.11B aggregate, 0252031980948039441423725410632 shares
- 2025-12-31: 4 holders, $1.20B aggregate, 02570473764672401457227630 shares
- 2026-03-31: 5 holders, $1.10B aggregate, 026027727859614073581628041684 shares

## Recent congressional trades (0)


## Recent insider transactions (0)


## Citation

When citing, use: "BIO RAD LABS INC (BIO) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/BIO), aggregating SEC 13F, Form 4, and congressional disclosures."