Bio-Rad Laboratories shares owned by Parnassus Investments
Quarter-by-quarter ownership of Bio-Rad Laboratories (BIO) shares owned by Parnassus Investments
from 13F filings
Historical chart of Parnassus Investments investment in Bio-Rad Laboratories
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Quarterly reported holdings in Bio-Rad Laboratories by Parnassus Investments
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $88M | 315k | 280.39 |
| 2025-06-30 | $77M | 317k | 241.32 |
| 2025-03-31 | $78M | 318k | 243.56 |
| 2024-12-31 | $102M | 311k | 328.51 |
| 2024-09-30 | $104M | 311k | 334.58 |
| 2024-06-30 | $85M | 311k | 273.11 |
| 2024-03-31 | $82M | 238k | 345.87 |
| 2023-12-31 | $77M | 238k | 322.89 |
| 2023-09-30 | $79M | 221k | 358.45 |
| 2012-12-31 | $17M | 159k | 105.05 |
| 2012-09-30 | $16M | 154k | 106.72 |
| 2012-06-30 | $17M | 169k | 100.01 |
| 2012-03-31 | $19M | 178k | 103.69 |
| 2011-12-31 | $17M | 178k | 96.04 |
| 2011-09-30 | $14M | 154k | 90.77 |
| 2011-06-30 | $11M | 90k | 119.36 |
| 2011-03-31 | $13M | 105k | 120.14 |