Bio Rad Laboratories
BIO · NYSE
$354.50+$1.68 (+0.48%)TodayMarket closed ·
Prev close $352.82
Who owns BIO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 44.2% of BIO’s shares.
- First Eagle Investment Management, L.L.C.9.7%
- Alice N. Schwartz Revocable Trust6.7%
- BlackRock Institutional Trust Company, N.A.5.6%
- Schwartz (Norman D)5.2%
- Next 6 largest institutions17.0%
- All other shareholders55.8%
| Holder | Shares | % of shares |
|---|---|---|
| First Eagle Investment Management, L.L.C. | 2.61M | 9.74% |
| Alice N. Schwartz Revocable Trust | 1.78M | 6.66% |
| BlackRock Institutional Trust Company, N.A. | 1.50M | 5.62% |
| Schwartz (Norman D) | 1.38M | 5.16% |
| Dimensional Fund Advisors, L.P. | 944.55K | 3.53% |
| Vanguard Capital Management, LLC | 826.97K | 3.09% |
| Ariel Investments, LLC | 816.75K | 3.05% |
| Vanguard Portfolio Management, LLC | 816.20K | 3.05% |
| EARNEST Partners, LLC | 580.75K | 2.17% |
| State Street Investment Management (US) | 571.76K | 2.14% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| First Eagle Global Fund | 1.88M | 7.02% |
| American Funds SMALLCAP World Fund | 881.72K | 3.29% |
| iShares Core S&P Mid-Cap ETF | 630.53K | 2.36% |
| Vanguard Total Stock Market Index Fund | 586.66K | 2.19% |
| Vanguard Small-Cap Index Fund | 424.17K | 1.59% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $135.60K (1 trade) of BIO on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| ENGELHARDT EVA ANETTE | Sale | 550 | $135.60K |
| ENLOE COURTNEY C | Option exercise | 186 | — |
| ENLOE COURTNEY C | Tax withholding | 77 | $22.16K |
| ENLOE COURTNEY C | Option exercise | 186 | — |
| Lakkaraju Roop Kalyan | Option exercise | 1.08K | — |
| Lakkaraju Roop Kalyan | Tax withholding | 420 | $120.89K |
| Lakkaraju Roop Kalyan | Option exercise | 1.08K | — |
| PEI MELINDA LITHERLAND | Option exercise | 407 | — |
| PEI MELINDA LITHERLAND | Award | 369 | — |
| PEI MELINDA LITHERLAND | Option exercise | 407 | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 1.18M
- Days to cover
- 4.27
- % of shares outstanding
- 4.42%
- Average daily volume
- 276.89K
- Change since last report
- +18.4%
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