BIO — BIO-RAD LABORATORIES, INC.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
Others in Healthcare
Measured signals that fired on BIO
| date | signal | measured base rate |
|---|---|---|
| 2026-08-05 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-04 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-03 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-07-28 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-07-27 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-26 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-25 | ENGELHARDT EVA ANETTE EVP, President, CDG | Shares withheld for tax | 89 | 314.46 | 28.0K |
| 2026-07-25 | ENGELHARDT EVA ANETTE EVP, President, CDG | Option exercise | 246 | 0.00 | 0 |
| 2026-05-11 | ENGELHARDT EVA ANETTE EVP, President, CDG | Open-market sale | 550 | 246.54 | 135.6K |
| 2026-04-24 | Lakkaraju Roop Kalyan EVP, Chief Financial Officer | Shares withheld for tax | 420 | 287.84 | 120.9K |
| 2026-04-24 | ENLOE COURTNEY C EVP, General Counsel & Sec | Shares withheld for tax | 77 | 287.84 | 22.2K |
| 2026-04-24 | ENLOE COURTNEY C EVP, General Counsel & Sec | Option exercise | 186 | 0.00 | 0 |
| 2026-04-24 | Lakkaraju Roop Kalyan EVP, Chief Financial Officer | Option exercise | 1.1K | 0.00 | 0 |
| 2026-04-21 | PINKSTON ARNOLD A Director | Option exercise | 407 | 0.00 | 0 |
| 2026-04-21 | Hinckley Greg K Director | Option exercise | 407 | 0.00 | 0 |
| 2026-04-21 | EDWARDS JEFFREY L Director | Option exercise | 407 | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| First Eagle Investment Management, LLC | 725.5M | 2.6M |
| BlackRock, Inc. | 468.3M | 1.7M |
| DIMENSIONAL FUND ADVISORS LP | 303.6M | 1.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | 231.7M | 831.2K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 231.1M | 829.2K |
| ARIEL INVESTMENTS, LLC | 219.1M | 786.0K |
| EARNEST PARTNERS LLC | 164.1M | 588.7K |
| STATE STREET CORP | 156.0M | 559.6K |
| Capital World Investors | 125.4M | 450.0K |
| BANK OF AMERICA CORP /DE/ | 124.0M | 445.0K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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