BUZZ-Quest Diagnostics shares fall due to disclosure of cybersecurity incident

October 22 - ** Quest Diagnostics (DGX.N) shares fell 2.9% in pre-market trading, to $231.90

** The company reported it has become aware of unauthorized access to its Quanum LSM system, which some customers use to place test orders, receive, and query results

** While the full scope of the unauthorized access is still under investigation, DGX currently believes that an unauthorized party accessed certain patient records

** The company added that the incident has not had a material impact on its business operations or its ability to serve patients

** In addition, the company now expects annual revenue to be between $12.07 billion and $12.11 billion, compared with prior guidance of $11.95 billion to $12.05 billion

** Full-year adjusted earnings per share guidance was raised to $11.25–$11.35 from $9.97–$10.17

** As of the close of the previous trading day, the stock had gained 37.5% year to date

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