BIO RAD LABS INC BIO
CL A · Common Stock · CUSIP 090572207 · ISIN US0905722072
American life science research firm
- SectorTechnology
- IndustryLaboratory Analytical Instruments
- HeadquartersHercules, CA
- Founded1952
- Websitebio-rad.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($6.5m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $241.38. Options: 6 managers hold calls ($2.9m notional), 6 hold puts ($8.8m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 486 |
| Q4 2022 | 473 |
| Q1 2023 | 509 |
| Q2 2023 | 471 |
| Q3 2023 | 472 |
| Q4 2023 | 488 |
| Q1 2024 | 467 |
| Q2 2024 | 442 |
| Q3 2024 | 441 |
| Q4 2024 | 458 |
| Q1 2025 | 437 |
| Q2 2025 | 387 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 199 | 236 |
| Q4 2023 | 230 | 235 |
| Q1 2024 | 220 | 234 |
| Q2 2024 | 187 | 260 |
| Q3 2024 | 193 | 237 |
| Q4 2024 | 205 | 204 |
| Q1 2025 | 189 | 248 |
| Q2 2025 | 161 | 270 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $6.6m | $4.6m | 0.71 |
| Q4 2024 | $5.2m | $3.9m | 0.75 |
| Q1 2025 | $3.6m | $3.8m | 1.05 |
| Q2 2025 | $2.9m | $8.8m | 2.99 |
Biggest buyers
| First Eagle Investment Management, LLC | Added | +951.1k |
| ROYAL BANK OF CANADA | Added | +272.8k |
| DIMENSIONAL FUND ADVISORS LP | Added | +122.5k |
| Ilex Capital Partners (UK) LLP | Added | +114.5k |
| SCOPIA CAPITAL MANAGEMENT LP | New | +94.7k |
| ARIEL INVESTMENTS, LLC | Added | +94.0k |
| JNE Partners LLP | New | +92.1k |
| Freestone Grove Partners LP | New | +73.6k |
| Man Group plc | Added | +73.6k |
| ExodusPoint Capital Management, LP | Added | +64.3k |
Biggest sellers
| VAN ECK ASSOCIATES CORP | Reduced | -556.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -366.1k |
| BlackRock, Inc. | Reduced | -259.1k |
| Nuveen, LLC | Reduced | -121.5k |
| STATE STREET CORP | Reduced | -110.2k |
| DAVENPORT & Co LLC | Reduced | -91.9k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -84.2k |
| Bank of New York Mellon Corp | Reduced | -67.0k |
| VANGUARD GROUP INC | Reduced | -65.6k |
| Veritas Asset Management LLP | Reduced | -50.0k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $1.3m5.3k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $1.1m4.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $313.0k1.3k shares |
| Cubist Systematic Strategies, LLC | New | $241.3k1.0k shares |
| GROUP ONE TRADING LLC | New | $48.3k200 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $4.6m19.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $3.5m14.5k shares |
| JANE STREET GROUP, LLC | New | $434.4k1.8k shares |
| GROUP ONE TRADING LLC | New | $144.8k600 shares |
| SIMPLEX TRADING, LLC | Reduced | $96.0k400 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
SCHWARTZ NORMAN D
13D · may seek influence
+82.6 pts · filed 2025-10-30
Stated purposeItem 4 to the Schedule 13D is hereby amended, in pertinent part, as follows: The purpose of the Shareholders' ownership of Bio-Rad shares has been control of the Company. The Shareholders control the management of the Company and may be deemed to be "parents" of the Company as that term is defined in the Rules and Regulations of the Commission. Full filing |
97.2% |
SCHWARTZ ALICE N
13D · may seek influence
filed 2025-07-18
Stated purposeItem 4 to the Schedule 13D is hereby amended, in pertinent part, as follows: The purposes of the transactions on December 10, 2018, December 3, 2019, December 7, 2020, November 9, 2021, November 7, 2022, December 5, 2023 and August 26, 2024 for Alice N. Schwartz and for the Alice N. Schwartz Revocable Trust set forth in Item 5 were estate planning. The purpose of the Shareholders' ownership of Bio-Rad shares has been control of the Company. Mrs. Schwartz, along with other members of her family, control the management of the Company and may be deemed to be a "parent" of the Company as that term is defined in the Rules and Regulations of the Commission. Full filing |
12.3% |
| First Eagle Investment Management, LLC 13G · institution +1.4 pts · filed 2025-08-06 | 11.4% |
| BlackRock, Inc. 13G · institution filed 2025-10-17 | 7.4% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 1 | $1.0m | — |
| Q4 2023 | 0 | — | 2 | $554.9k | — |
| Q1 2024 | 0 | — | 2 | $1.8m | — |
| Q2 2024 | 0 | — | 1 | $104.0k | — |
| Q3 2024 | 0 | — | 2 | $1.2m | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 1 | $741.2k | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| First Eagle Investment Management, LLC 1.22% of their portfolio | 2.5m $607.5m | Added +951.1k |
| VANGUARD GROUP INC 0.01% of their portfolio | 1.8m $445.6m | Reduced -65.6k |
| BlackRock, Inc. 0.01% of their portfolio | 1.8m $425.4m | Reduced -259.1k |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 999.6k $241.2m | Added +122.5k |
| Veritas Asset Management LLP 2.08% of their portfolio | 863.1k $208.3m | Reduced -50.0k |
| ARIEL INVESTMENTS, LLC 2.24% of their portfolio | 818.6k $197.6m | Added +94.0k |
| EARNEST PARTNERS LLC 0.66% of their portfolio | 605.9k $146.2m | Added +6.3k |
| STATE STREET CORP 0.01% of their portfolio | 584.4k $141.0m | Reduced -110.2k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 452.1k $109.1m | Added +21.6k |
| First Pacific Advisors, LP 1.34% of their portfolio | 386.9k $93.4m | Added +14.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 334.1k $80.6m | Reduced -8.8k |
| PARNASSUS INVESTMENTS, LLC 0.18% of their portfolio | 317.2k $76.6m | Reduced -893 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 3.84% of their portfolio | 315.3k $76.1m | Reduced -8.5k |
| THOMPSON SIEGEL & WALMSLEY LLC 1.25% of their portfolio | 306.1k $73.9m | Added +26.6k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 303.1k $73.2m | Added +272.8k |
| Mawer Investment Management Ltd. 0.33% of their portfolio | 267.1k $64.5m | Reduced -27.8k |
| SEI INVESTMENTS CO 0.07% of their portfolio | 265.4k $64.0m | Added +11.8k |
| Select Equity Group, L.P. 0.26% of their portfolio | 256.0k $61.8m | Reduced -9.2k |
| MILLENNIUM MANAGEMENT LLC 0.05% of their portfolio | 251.8k $60.8m | Reduced -84.2k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 226.5k $54.7m | Reduced -34.6k |
| DEERFIELD MANAGEMENT COMPANY, L.P. 0.99% of their portfolio | 226.1k $54.6m | Unchanged |
| UBS Group AG 0.01% of their portfolio | 200.8k $48.4m | Reduced -16.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 197.6k $47.7m | Reduced -5.6k |
| Hound Partners, LLC 5.93% of their portfolio | 181.9k $43.9m | Reduced -19.8k |
| MORGAN STANLEY 0.00% of their portfolio | 170.1k $41.0m | Reduced -26.5k |
| GW&K Investment Management, LLC 0.32% of their portfolio | 147.2k $35.5m | Added +3.3k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.14% of their portfolio | 139.5k $33.7m | Added +4.8k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 137.7k $33.2m | Reduced -5.9k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 135.8k $32.8m | Reduced -67.0k |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 131.7k $31.8m | Added +18.0k |
| Allspring Global Investments Holdings, LLC 0.05% of their portfolio | 130.5k $32.4m | Reduced -5.4k |
| NORGES BANK 0.00% of their portfolio | 128.4k $31.0m | Reduced -28.3k |
| FEDERATED HERMES, INC. 0.06% of their portfolio | 127.1k $30.7m | Reduced -13.2k |
| QVIDTVM Management LLC 30.47% of their portfolio | 126.1k $30.4m | Reduced -120 |
| Ilex Capital Partners (UK) LLP 0.97% of their portfolio | 120.9k $29.2m | Added +114.5k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.03% of their portfolio | 119.5k $28.8m | Added +5.5k |
| Artisan Partners Limited Partnership 0.04% of their portfolio | 118.2k $28.5m | Reduced -1.7k |
| Tikvah Management LLC 8.63% of their portfolio | 111.1k $26.8m | Unchanged |
| ExodusPoint Capital Management, LP 0.32% of their portfolio | 108.6k $26.2m | Added +64.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 104.9k $25.3m | Reduced -132 |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 103.4k $25.0m | Added +178 |
| SCOPIA CAPITAL MANAGEMENT LP 2.79% of their portfolio | 94.7k $22.9m | New |
| JNE Partners LLP 8.94% of their portfolio | 92.1k $22.2m | New |
| Gotham Asset Management, LLC 0.13% of their portfolio | 87.9k $21.2m | Added +59.4k |
| Man Group plc 0.04% of their portfolio | 80.3k $19.4m | Added +73.6k |
| HRT FINANCIAL LP 0.10% of their portfolio | 74.8k $18.1m | Added +16.1k |
| Freestone Grove Partners LP 0.13% of their portfolio | 73.6k $17.8m | New |
| Portolan Capital Management, LLC 0.95% of their portfolio | 62.8k $15.2m | Added +41.0k |
| CITIGROUP INC 0.01% of their portfolio | 61.7k $14.9m | Added +27.1k |
| Marathon Asset Management Ltd 0.46% of their portfolio | 59.8k $14.4m | Reduced -844 |
| Allianz Asset Management GmbH 0.02% of their portfolio | 54.2k $13.1m | Added +37.9k |
| Hosking Partners LLP 0.52% of their portfolio | 54.1k $13.1m | Reduced -393 |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 53.7k $13.0m | Reduced -3.5k |
| ACADIAN ASSET MANAGEMENT LLC 0.03% of their portfolio | 51.4k $12.4m | Reduced -22.0k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 50.1k $12.1m | Reduced -5.3k |
| T. Rowe Price Investment Management, Inc. 0.01% of their portfolio | 48.2k $11.6m | New |
| Legal & General Group Plc 0.00% of their portfolio | 44.2k $10.7m | Reduced -13.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 42.2k $10.2m | Reduced -2.1k |
| VAN ECK ASSOCIATES CORP 0.01% of their portfolio | 40.3k $9.7m | Reduced -556.5k |
| GABELLI FUNDS LLC 0.07% of their portfolio | 39.8k $9.6m | Reduced -500 |
| NATIXIS ADVISORS, LLC 0.01% of their portfolio | 39.0k $9.4m | Added +12.3k |
| Invesco Ltd. 0.00% of their portfolio | 37.9k $9.2m | Reduced -2.1k |
| Swiss National Bank 0.01% of their portfolio | 37.2k $9.0m | Reduced -17.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 36.8k $8.9m | Added +7.3k |
| Arnhold LLC 0.77% of their portfolio | 34.8k $8.4m | New |
| California Public Employees Retirement System 0.00% of their portfolio | 32.2k $7.8m | Reduced -1.3k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 30.5k $7.4m | Added +740 |
| Nuveen, LLC 0.00% of their portfolio | 29.8k $7.2m | Reduced -121.5k |
| PRELUDE CAPITAL MANAGEMENT, LLC 0.69% of their portfolio | 29.3k $7.1m | Reduced -870 |
| ICICI Prudential Asset Management Co Ltd 0.85% of their portfolio | 28.3k $6.8m | Unchanged |
| AQR CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 28.2k $6.8m | Added +9.6k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 27.4k $6.6m | Reduced -4.4k |
| GAMCO INVESTORS, INC. ET AL 0.06% of their portfolio | 26.8k $6.5m | Unchanged |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.05% of their portfolio | 26.6k $6.4m | Unchanged |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 24.0k $5.8m | New |
| WINSLOW ASSET MANAGEMENT INC 1.12% of their portfolio | 23.0k $5.6m | Reduced -866 |
| Retirement Systems of Alabama 0.02% of their portfolio | 22.7k $5.5m | Reduced -723 |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 22.6k $5.4m | Added +7.4k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 22.5k $5.4m | Reduced -3.9k |
| Brevan Howard Capital Management LP 0.06% of their portfolio | 21.8k $5.3m | New |
| ASSETMARK, INC 0.01% of their portfolio | 21.2k $5.1m | Added +12.0k |
| CAPITAL FUND MANAGEMENT S.A. 0.05% of their portfolio | 20.6k $5.0m | New |
| BARCLAYS PLC 0.00% of their portfolio | 19.8k $4.8m | Reduced -10.0k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 19.8k $4.8m | Added +468 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 19.0k $4.6m | Reduced -4.7k |
| Sivik Global Healthcare LLC 1.94% of their portfolio | 18.0k $4.3m | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 17.9k $4.3m | Reduced -8.3k |
| SECTOR GAMMA AS 1.41% of their portfolio | 17.8k $4.3m | Added +4.0k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 17.5k $4.2m | Unchanged |
| Aquatic Capital Management LLC 0.08% of their portfolio | 17.3k $4.2m | Added +9.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 16.7k $4.0m | Reduced -366.1k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 16.1k $3.9m | Added +1.6k |
| Jain Global LLC 0.06% of their portfolio | 15.1k $3.6m | Added +5.3k |
| RK Asset Management, LLC 3.37% of their portfolio | 14.5k $3.5m | Added +113 |
| COMERICA BANK 0.01% of their portfolio | 14.5k $3.5m | Reduced -1.2k |
| CenterBook Partners LP 0.19% of their portfolio | 14.4k $3.5m | Reduced -12.3k |
| EXCHANGE TRADED CONCEPTS, LLC 0.04% of their portfolio | 13.9k $3.4m | Added +7.7k |
| CANADA LIFE ASSURANCE Co 0.01% of their portfolio | 13.1k $3.2m | Reduced -1.3k |
| LPL Financial LLC 0.00% of their portfolio | 13.1k $3.2m | Added +7.7k |
| XTX Topco Ltd 0.13% of their portfolio | 12.8k $3.1m | Added +8.2k |