Stock Taper
| DATE | TYPE | RATIO |
|---|---|---|
| 2005-06-21 | Forward | 2:1 |
| 2001-06-01 | Forward | 2:1 |
Quest Diagnostics provides diagnostic testing, information, and services across the U.S. and internationally for patients, clinicians, and organizations through labs, centers, and IT solutions.

Quest's at-home genetic test analyzes 36 genes to assess inherited risks for various health conditions, offering personalized reports and genetic counseling as part of its direct-to-consumer strategy.
| Icon | PRODUCT | Q3-2025 | Q4-2025 | Q1-2026 | Q2-2026 |
|---|---|---|---|---|---|
![]() | Diagnostic Information Services Business | $2.75B | $2.74B ▼ | $2.83B ▲ | $2.98B ▲ |
Overall rating: B
| PEER | PRICE | |
|---|---|---|
ILMN | $215.59 | COMPARE |
WAT | $414.69 | COMPARE |
LH | $335.11 | COMPARE |
INCY | $124.37 | COMPARE |
WST | $337.47 | COMPARE |
UTHR | $515.46 | COMPARE |
THC | $266.80 | COMPARE |
ZBH | $100.91 | COMPARE |