Bio-Rad Laboratories, Inc.
Bio-Rad Laboratories, Inc. (BIO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · BIO · as of Sep 30, 2025
Ownership Breakdown
398
Institutional Holders
▲ 10 vs Q2
$5.46B
Total Inst. Value
▲ $824.08M vs Q2
27.04M
Shares Outstanding
freeFloat 66.27%
19.48M
13F Shares Held
▲ 272,935 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
BIO largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FIRST EAGLE INVESTMENT MANAGEMENT, LLC laboratory analytical instruments | 2.52M | 9.26% | 9.26% | $706.67B | Nov 12, 2025 | ▲ 3.0K |
VANGUARD GROUP INC laboratory analytical instruments | 1.79M | 6.59% | 6.59% | $502.89B | Nov 7, 2025 | ▼ 53.0K |
BLACKROCK, INC. laboratory analytical instruments | 1.70M | 6.23% | 6.23% | $475.50B | Nov 12, 2025 | ▼ 66.8K |
DIMENSIONAL FUND ADVISORS LP laboratory analytical instruments | 1.06M | 3.90% | 3.90% | $298.02B | Nov 12, 2025 | ▲ 63.4K |
VERITAS ASSET MANAGEMENT LLP laboratory analytical instruments | 844.0K | 3.10% | 3.10% | $236.66B | Nov 4, 2025 | ▼ 19.1K |
ARIEL INVESTMENTS, LLC laboratory analytical instruments | 809.5K | 2.97% | 2.97% | $226.97B | Nov 14, 2025 | ▼ 9.1K |
EARNEST PARTNERS LLC laboratory analytical instruments | 609.3K | 2.24% | 2.24% | $170.84B | Nov 14, 2025 | ▲ 3.4K |
STATE STREET CORP laboratory analytical instruments | 571.6K | 2.10% | 2.10% | $160.27B | Nov 14, 2025 | ▼ 12.8K |
BANK OF AMERICA CORP /DE/ laboratory analytical instruments | 459.9K | 1.69% | 1.69% | $128.95B | Feb 3, 2026 | ▲ 7.8K |
CAPITAL RESEARCH GLOBAL INVESTORS laboratory analytical instruments | 418.4K | 1.54% | 1.54% | $117.30B | Nov 13, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+897.8K shares4
New Positions
first time holders18
Decreased
−521.2K shares0
Sold Out
fully exitedNet shares change (top 50)
+376.6K
+897.8K / −521.2K
Net new holders
+11
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
BIO insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
10
Buy transactions
9
Sell transactions
1.11
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
ENGELHARDT EVA ANETTE EVP, President, CDG | May 11, 2026 | Sale | 550 | $246.54 | $135.6K | 346 | Form 4 ↗ |
Lakkaraju Roop Kalyan EVP, Chief Financial Officer | Apr 24, 2026 | Tax Withhold | 420 | $287.84 | $120.9K | 2.6K | Form 4 ↗ |
ENLOE COURTNEY C EVP, General Counsel & Sec | Apr 24, 2026 | Tax Withhold | 77 | $287.84 | $22.2K | 749.777 | Form 4 ↗ |
Hinckley Greg K director | Apr 21, 2026 | Award | 369 | — | — | 369 | Form 4 ↗ |
PEI MELINDA LITHERLAND director | Apr 21, 2026 | Award | 369 | — | — | 369 | Form 4 ↗ |
EDWARDS JEFFREY L director | Apr 21, 2026 | Award | 369 | — | — | 369 | Form 4 ↗ |
PINKSTON ARNOLD A director | Apr 21, 2026 | Award | 369 | — | — | 369 | Form 4 ↗ |
BARRY JAMES EVP, President, LSG | Nov 6, 2025 | Sale | 699.873 | $306.18 | $214.3K | 509.682 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Bio-Rad Laboratories, Inc. (BIO) is primarily owned by institutional investors, who hold approximately 72.0% of total shares outstanding. Company insiders own approximately 33.73%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Bio-Rad Laboratories, Inc. is FIRST EAGLE INVESTMENT MANAGEMENT, LLC, holding approximately 2.52 million shares — equal to 9.26% of outstanding shares — as of September 30, 2025.
A total of 398 institutional investors currently hold BIO stock, with a combined institutional value of approximately $5.46 billion as of the most recent 13F filing period.
Frequently asked questions
BIO ownershipBio-Rad Laboratories, Inc. (BIO) is primarily owned by institutional investors, who hold approximately 72.0% of shares. The largest shareholder is FIRST EAGLE INVESTMENT MANAGEMENT, LLC with a 9.26% stake. Company insiders hold 33.73%. Data sourced from SEC Form 13F as of September 30, 2025.