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DGX

Quest Diagnostics, Inc.

NYSE · Healthcare · Medical - Diagnostics & Research · US

$247.06
−1.50%
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  • Oct 23, 2026, 15:00 UTC

    QUEST DIAGNOSTICS INC confirmed that a cyberattack compromised personal and health data stored in its systems, with the number of affected patients unspecified.

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  • Oct 22, 2026, 23:59 UTC

    QUEST DIAGNOSTICS INC disclosed unauthorized access to its Quanum Lab Services Manager, with certain patient records believed to have been accessed; the scope remains under investigation.

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  • Oct 22, 2026, 19:21 UTC

    QUEST DIAGNOSTICS INC shares fell in pre-market trading.

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  • Oct 22, 2026, 13:00 UTC

    QUEST DIAGNOSTICS INC reported quarterly earnings of $3 per share, above the Zacks Investment Research, Inc. Consensus Estimate of $2.85 and compared with $2.60 per share a year earlier.

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  • Oct 22, 2026, 10:46 UTC

    QUEST DIAGNOSTICS INC raised its full-year 2026 guidance to revenue of $12.065 billion to $12.105 billion, reported diluted EPS of $10.21 to $10.31, and adjusted diluted EPS of $11.25 to $11.35.

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  • Oct 22, 2026, 10:46 UTC

    QUEST DIAGNOSTICS INC reported third-quarter 2026 revenue of $3.10 billion, up 10.0% year over year, reported diluted EPS of $2.78, up 28.7%, and adjusted diluted EPS of $3.00, up 15.4%.

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  • Oct 20, 2026, 12:00 UTC

    Waters Corporation and QUEST DIAGNOSTICS INC announced a collaboration to expand access to an at-home HPV screening option through Quest's clinician, health plan, and consumer channels starting in 2027.

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  • Oct 20, 2026, 11:32 UTC

    QUEST DIAGNOSTICS INC is making a new at-home HPV test kit available nationally in the United States.

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  • Oct 6, 2026, 20:35 UTC

    Catherine T. Doherty is scheduled to retire from her executive vice president role at QUEST DIAGNOSTICS INC, effective July 1, 2027.

  • Oct 6, 2026, 20:35 UTC

    QUEST DIAGNOSTICS INC appointed Catherine T. Doherty as executive vice president, effective November 1, 2026.

  • Sep 22, 2026, 20:28 UTC

    Quest Diagnostics announced it will report its third quarter 2026 financial results on October 22, 2026, before the market opens.

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  • Sep 22, 2026, 14:13 UTC

    The U.S. Centers for Medicare & Medicaid Services published preliminary 2027 Medicare payment rates for clinical laboratory services, aiming to align Medicare payments closer to private-sector levels.

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  • Sep 21, 2026, 12:03 UTC

    Quest Diagnostics announced the publication of a study in JAMA Network Open finding that nearly 1 in 3 patients with suspected Lyme disease are co-positive for other tick-borne pathogens.

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  • Aug 25, 2026, 12:00 UTC

    Humanity Health Inc. launched its Humanity Biological Age analysis in the United States through Quest Diagnostics' consumer-initiated testing platform questhealth.com.

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  • Aug 18, 2026, 17:55 UTC

    Whoop announced that its Advanced Labs health screenings no longer require a subscription, and added the multi-cancer early detection test Galleri to its portfolio.

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  • Aug 12, 2026, 20:15 UTC

    Quest Diagnostics' Board of Directors declared a quarterly cash dividend of $0.86 per share, payable on October 21, 2026, to shareholders of record on October 6, 2026.

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  • Aug 4, 2026, 19:00 UTC

    Cassandra Barksdale filed a personal injury lawsuit in the State Court of Clayton County against Kaiser Foundation Health Plan of Georgia, Inc., Kaiser Foundation Health Plan, Inc., Kaiser Permanente Insurance Company, and Cecelia Prestridge, alleging a mislabeled tissue sample led to an unnecessary total hysterectomy.

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  • Jul 23, 2026, 10:54 UTC

    Quest Diagnostics reported its fiscal 2026 second-quarter (April-June) financial results, showing revenue of $3.043 billion, operating income of $459 million, and diluted EPS of $2.86.

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  • Jul 8, 2026, 12:52 UTC

    Quest Diagnostics launches a pilot program integrating its Haystack MRD ctDNA test and Comprehensive Genomic Profiling services into OncoEMR EHR for community oncology providers including American Oncology Network.

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  • Jun 24, 2026, 12:52 UTC

    Quest Diagnostics received approval from the New York State Department of Health's Clinical Laboratory Evaluation Program for its Haystack MRD test.

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  • Jun 23, 2026, 23:45 UTC

    The US Court of Appeals for the Third Circuit ruled in favor of Quest Diagnostics, rejecting a class-action lawsuit by employees alleging mishandling of the company's 401(k) retirement plan.

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  • Jun 16, 2026, 00:00 UTC

    GeneDx Holdings Corp. appointed Mark Gardner as President, effective June 15, 2026.

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