Quest Diagnostics Incorporated

DGX · NYSE · Stock · Healthcare
$234.23
+1.63% today
Delayed price,

What Quest Diagnostics does

Quest Diagnostics Incorporated provides diagnostic testing and services in the United States. The company develops and delivers diagnostic information services, such as routine, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It also provides services under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands to physicians, hospitals, patients and consumers, health plans, government agencies, employers, retailers, pharmaceutical companies and insurers commercial clinical laboratories, and accountable care organizations through a network of laboratories, patient service centers, phlebotomists in physician offices, call centers and mobile phlebotomists, nurses, and other health and wellness professionals. In addition, the company offers risk assessment services for the life insurance industry; healthcare IT healthcare providers and payers; testing and medical director services at hospital laboratories; test offerings in cardiometabolic and endocrine; cancer; clinical drug monitoring and toxicology; infectious disease, including autoimmune; neurology diagnostics, including Alzheimer's disease; and women's health, such as prenatal genetic; workplace drug testing, testing urine, hair, and oral fluid specimens services; and employer population health services, including biometric screenings, flu shots, and related preventative services. Further, it provides population health solutions; extended care services; develops in vitro diagnostic tests; laboratory diagnostic information and digital health connectivity systems; underwriting support services, including data gathering, paramedical examinations, and clinical laboratory testing and analytics; and national specimen collection and health data solutions. Quest Diagnostics Incorporated was founded in 1967 and is headquartered in Secaucus, New Jersey.

Key facts

Sector
Healthcare
Industry
Diagnostics & Research
Market cap
$25.85B
P/E (ttm)
24.9
Forward P/E
19.5
Dividend yield
1.49%
Beta
0.54
Profit margin
9.2%
Employees
46,000
Headquarters
Secaucus, NJ, United States
Exchange
NYSE

Performance

1 Month
-5.0%
3 Months
+11.2%
6 Months
+20.1%
1 Year
+23.6%
5 Years
+57.5%
$171.1852-week range$248.84
Biggest setback — last 12 months
-11.9%
23 Feb 2026 → 11 May 2026
Fell from $211.91 to $186.61 — its sharpest sustained decline this year.
Biggest run-up — last 12 months
+41.8%
29 Dec 2025 → 14 Sept 2026
Ran from $173.79 to $246.45 — its strongest sustained advance this year.

Price outlook — trend & volatility model

● Trend: Above long-term trend
Price sits above its 200-day average, but the shorter-term averages are not cleanly aligned above/below it.
HorizonBear case (−1σ)Base caseBull case (+1σ)
1 Month$218.26 (-6.8%)$234.23$251.36 (+7.3%)
3 Months$207.27 (-11.5%)$234.23$264.69 (+13.0%)
6 Months$197.03 (-15.9%)$234.23$278.45 (+18.9%)
12 Months$183.41 (-21.7%)$234.23$299.12 (+27.7%)
Statistical, not machine-learning: a random-walk (no assumed drift) volatility model built from this ticker's own realized price history, plus a purely descriptive moving-average trend read. Illustrative only — not a price target and not financial advice. The bear and bull cases sit one standard deviation (1σ) below and above today's price, a range that covers about 68% of the outcomes the model treats as plausible, not a 68% chance of either case. Annualized volatility used: 24.5%, blended from this ticker's own 3-month and 1-year realized price history. Base case is deliberately flat — this quantifies a possible range, not a directional prediction. See the full model, including wider (≈95%) bands →

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Prices and company data are delayed reference figures from public sources (Yahoo Finance, SEC EDGAR) and may be inaccurate or out of date. This page is informational only — it is not investment advice or a recommendation to buy or sell any security. Past performance does not indicate future results.