BIO — BIO-RAD LABORATORIES INC - US
Public company
InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.
Sourced from SEC EDGAR public filings
Why are billionaires buying BIO?
Built from public SEC filings and public economic data. Not a recommendation.
Why? — Evidence & Confidence ▾
Of 3 tracked investors who changed their BIO position last quarter, 3 bought and 0 sold (100% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Expansion regime).
- +3 tracked investors added or increased positions last quarter (Izzy Englander, Ken Griffin, Paul Tudor Jones)
- +3 tracked investors reported holding BIO at their latest filing
- +Macro Health is 56/100 in a Expansion regime — historically acceptable for this sectorsource
- −13F data is disclosed up to 45 days after quarter end — positions may have changed since
- · 13F disclosure lag (up to 45 days)
- · Tracked investors are a sample, not the whole market
- · Sector regime fit is a historical average, not a guarantee
Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/19/2026.
About BIO-RAD LABORATORIES INC - US (BIO)
BIO-RAD LABORATORIES INC - US (BIO) appears in the most recent 13F filings of 3 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $197M. Across recent filings, tracked investors recorded 8 new positions, 4 increased, 5 reduced, and 5 exited. All data sourced from SEC 13F filings.
Based on recent institutional activity in BIO
How many top investors track BIO
A small number of top investors own this.
BIO Ownership Composition
How BIO-RAD LABORATORIES INC - US is held across tracked investor types, based on reported 13F positions.
- Multi-Strategy / Quant83.2%
- Macro16.8%
Tracked investors currently reporting BIO
2 tracked investors have since exited this position — listed separately below.
- Izzy EnglanderJun 30, 2026Millennium ManagementShares59.9KValue$17.6M% Portfolio0.01%
- Ken GriffinJun 30, 2026Citadel AdvisorsShares63.9KValue$18.8M% Portfolio0.00%
- Paul Tudor JonesJun 30, 2026Tudor Investment CorpShares25KValue$7.3M% Portfolio0.01%
Previously held BIO
These investors reported BIO in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.
| Investor | Firm | Last reported shares | Value then | Last held |
|---|---|---|---|---|
| Steve Cohen | Point72 Asset Management | 250.1K | $83.7M | Sep 30, 2024 |
| Ray Dalio | Bridgewater Associates | 771 | $248.9K | Dec 31, 2023 |
Recent activity
- Increased$196.7M(5168.44%)Nov 14, 2024
- Reduced$125.2M(-35.17%)Feb 14, 2025
- Reduced$81.8M(-11.82%)May 15, 2025
- Reduced$60.8M(-25.06%)Aug 14, 2025
- Sold$0(-100.00%)Feb 17, 2026
- $17.6MAug 14, 2026
- Increased$10.3M(98.66%)Nov 14, 2024
- Increased$6.7M(103.56%)May 15, 2025
- Reduced$6.5M(-1.79%)Aug 14, 2025
- Sold$0(-100.00%)Nov 14, 2025
- New$18.8MAug 14, 2026
- Reduced$248.9K(-95.40%)Feb 14, 2024
- Sold$0(-100.00%)May 14, 2024
- New$83.7MNov 14, 2024
- Sold$0(-100.00%)Feb 14, 2025
- $2.4MFeb 14, 2025
- Sold$0(-100.00%)May 15, 2025
- $1.4MMay 15, 2026
- Increased$7.3M(384.40%)Aug 14, 2026
- New$6MNov 13, 2023
- New$4.2MAug 14, 2024
- $8.6MMay 15, 2024
Frequently asked questions
- How many institutional investors hold BIO?
- 3 tracked institutional investors disclosed a position in BIO (BIO-RAD LABORATORIES INC - US) in their most recent 13F filing.
- Who is the largest institutional holder of BIO?
- Izzy Englander, Millennium Management, holds the largest disclosed position in BIO, valued at $197M.
- Did institutional ownership of BIO increase or decrease?
- Across recent 13F filings, tracked investors recorded 8 new positions, 4 increased, 5 reduced, and 5 fully exited BIO.
- Where does this BIO ownership data come from?
- SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.