BIO Ownership
Bio-Rad Laboratories Inc - Institutional & insider holdings
Ownership Breakdown
Institutions
74+
Stock Price
$278.44
Top Institutional Holders
View All Holders →| Holder | Shares | Value | % Owned |
|---|---|---|---|
| Arnhold & S. Bleichroeder Advisers, LLC | 2.52M | $862.88M | 930.19% |
| Vanguard Group Inc | 1.85M | $632.96M | 682.33% |
| BlackRock Inc | 1.76M | $604.20M | 651.33% |
| Dimensional Fund Advisors, Inc. | 999.57K | $342.63M | 369.36% |
| Veritas Asset Management LLP | 863.14K | $295.87M | 318.94% |
| Ariel Investments, LLC | 818.62K | $280.61M | 302.49% |
| Earnest Partners LLC | 605.89K | $207.69M | 223.88% |
| iShares Core S&P Mid-Cap ETF | 605.41K | $207.52M | 223.71% |
| First Pacific Advisors, LP | 386.95K | $132.64M | 142.98% |
| Geode Capital Management, LLC | 334.14K | $114.54M | 123.47% |
| Parnassus Investments LLC | 317.22K | $108.74M | 117.22% |
| Southeastern Asset Management Inc | 315.29K | $108.07M | 116.50% |
| Thompson, Siegel & Walmsley LLC | 306.13K | $104.94M | 113.12% |
| DFA US Small Cap Value I | 270.12K | $92.59M | 99.81% |
| Mawer Investment Management Ltd | 267.11K | $91.56M | 98.70% |
Recent Insider Trading
View All Insider Trades →Insider trading data for BIO is being updated.
Insider trades are reported via SEC Form 4.
Understanding Stock Ownership
Institutional Ownership
Large investors like hedge funds and mutual funds that manage $100M+ must disclose their holdings quarterly via 13F filings. High institutional ownership often indicates strong fundamentals.
Insider Ownership
Company executives and directors must report their trades via SEC Form 4. Insider buying can signal confidence, while selling may occur for various reasons including diversification.
Why It Matters
Ownership structure reveals who believes in the company. Institutional investors conduct deep research, while insider buying shows internal confidence. Track ownership changes for investment signals.
Data Sources
Institutional data from SEC 13F filings (quarterly), insider trades from Form 4 filings (within 2 business days), and company proxy statements (annual ownership disclosures).
Get Full BIO Analysis
AI insights, financials, valuation, and complete ownership tracking
View Complete AnalysisFrequently Asked Questions
Who owns BIO?
BIO (Bio-Rad Laboratories Inc) is owned by institutional investors (multiple), company insiders (various holdings), and retail investors. The largest institutional holders are disclosed in quarterly SEC 13F filings.
What is BIO institutional ownership?
BIO has significant institutional ownership from hedge funds, mutual funds, and investment firms. Check the holdings table above for detailed data.
What is BIO insider ownership?
Company insiders hold shares of BIO. Insider trading activity is tracked through SEC Form 4 filings.
Are BIO insiders buying or selling?
Check the insider trading activity section above for the latest BIO insider transactions.