Quest Diagnostics reports third-quarter earnings beat

Quest Diagnostics reported third-quarter revenue of $3.10 billion, a 10% increase compared to the same period in 2025. Reported diluted earnings per share rose 28.7% to $2.78, while adjusted diluted earnings per share reached $3.00, both exceeding analyst expectations.

Following these results, the company raised its full-year revenue guidance to a range of $12.065 billion to $12.105 billion. It also increased its adjusted earnings per share outlook to between $11.25 and $11.35. Despite the positive financial performance and consecutive quarters of revenue growth, the company's shares fell nearly 5% following the announcement.