Quest Diagnostics Incorporated (DGX) AI Stock Analysis

NYSE: DGXAI research summary: business, growth, valuation, analysts, bull and bear case.

DGX AI stock analysis summary

AI Research

Quest Diagnostics Incorporated provides diagnostic testing, information, and services through a nationwide network of laboratories and patient service centers. For FY2025, revenue grew 11.8% to $11.04B with net income reaching $992.0M. In the latest quarter ended June 30, 2026, quarterly revenue increased 10.2% year-over-year while quarterly earnings expanded 15.0%.

Market cap
$25.94B
Revenue (TTM)
$11.56B
P/E
24.6x
fwd 19.5x
1Y return
27.9%
S&P 500 16.8%
Avg. target
$251.40
7.0% vs last close

Bull case

  • Quarterly revenue increased 10.2% year-over-year in the quarter ended June 30, 2026, alongside 15.0% earnings growth.
  • The company generated $1.36B in free cash flow and $1.89B in operating cash flow in FY2025.
  • Quest Diagnostics has increased its dividend at a 7.3% annualized rate over 5 years while maintaining a payout ratio of 31.8%.

Bear case

  • Gross margin decreased each year from 39.0% in FY2021 down to 31.9% in FY2025.
  • The company carries $6.38B in total debt and $5.76B in net debt against $626.0M in cash and short-term investments as of June 30, 2026.
  • Quest Diagnostics trades at a forward P/E of 19.5x, above the median of its S&P 500 Healthcare peers at 16.5x.

What Quest Diagnostics does

Quest Diagnostics Incorporated specializes in providing comprehensive diagnostic testing, information, and services both domestically and globally. The company operates a network of laboratories, patient service centers, and mobile health professionals, offering routine and advanced clinical testing, anatomic pathology, and specialized diagnostic testing. It delivers services under brands including Quest Diagnostics, AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum. Quest Diagnostics serves patients, healthcare providers, hospitals, independent delivery networks, health plans, employers, and accountable care organizations, while also providing risk assessment services to the life insurance industry and healthcare information technology solutions.

Growth and profitability

Following pandemic-period revenue of $10.79B in FY2021, Quest Diagnostics experienced revenue declines of 8.4% in FY2022 to $9.88B and 6.4% in FY2023 to $9.25B. Growth rebounded in FY2024 with revenue rising 6.7% to $9.87B, and accelerated in FY2025 by 11.8% to $11.04B. Net income was $2.00B in FY2021, $946.0M in FY2022, $854.0M in FY2023, $871.0M in FY2024, and $992.0M in FY2025. Operating margin was 14.5% in FY2025 compared to 22.1% in FY2021. For the trailing twelve months, revenue reached $11.56B with an operating margin of 15.2% and EPS of $9.54. In the latest quarter ended June 30, 2026, revenue increased 10.2% and earnings rose 15.0%.

DGX income statement →

Balance sheet and cash flow

As of June 30, 2026, Quest Diagnostics held $626.0M in cash and short-term investments against total debt of $6.38B, resulting in net debt of $5.76B. Shareholders' equity was $7.52B, corresponding to a debt-to-equity ratio of 0.85 and a current ratio of 1.59. In FY2025, operating cash flow reached $1.89B and free cash flow stood at $1.36B. Capital deployment in FY2025 included $527.0M in capital expenditures, $450.0M in share buybacks, and $353.0M in dividends paid, contributing to a -10.4% change in share count over 5 years.

DGX balance sheet →

Valuation and performance

At a market cap of $25.94B and enterprise value of $31.47B, Quest Diagnostics trades at a trailing P/E of 24.6x and a forward P/E of 19.5x. Its trailing P/E sits below the 28.9x median of its S&P 500 Healthcare peers, while its forward P/E is above the peer median of 16.5x. Enterprise value-to-EBITDA is 14.0x compared to 15.7x for peers, and price-to-sales is 2.2x versus 3.4x. Over the past year, the stock gained 27.9%, outperforming the S&P 500 return of 16.8%, while its 5-year return of 82.5% closely tracked the index's 83.0%.

DGX key metrics →

DGX dividend

Quest Diagnostics pays a quarterly dividend with an annualized forward rate of $3.44, representing a dividend yield of 1.46%. The company has paid dividends for 23 consecutive years, delivering a 5-year annualized dividend growth rate of 7.3%. Its payout ratio is 31.8%, supported by $353.0M in dividends paid in FY2025. The last ex-dividend date was October 6, 2026.

DGX dividend history →

What analysts expect

Wall Street analyst coverage includes 7 Strong Buy, 2 Buy, and 8 Hold ratings, with 0 Sell and 0 Strong Sell ratings. The mean price target is $251.40, representing 7.0% upside compared to the last close of $235.00. For the fiscal year ending December 31, 2026, consensus estimates project EPS of $11.20 and revenue of $12.01B. Quest Diagnostics beat EPS estimates in each of the last 4 quarters, with its next earnings date scheduled for October 22, 2026.

DGX forecast and price target →

Key risks and what to watch

  • Operating margin of 15.2% over the trailing twelve months trails the median of its S&P 500 Healthcare peers at 19.1%.
  • A net debt level of $5.76B with a debt-to-equity ratio of 0.85 requires steady cash flow generation to manage debt obligations.
  • The 5-year revenue CAGR from FY2020 to FY2025 was modest at 3.2%.

AI-generated research summary. Written with AI from Quotelinks data as of October 16, 2026 and checked so every figure matches that data. For information only, not investment advice. Disclaimer

About this DGX AI stock analysis

This page is an AI-written research summary of Quest Diagnostics Incorporated (DGX). The text was generated on October 30, 2026 from Quotelinks data as of October 16, 2026 (company profile, annual results, latest balance sheet, valuation, price performance and analyst estimates). An automatic check rejects any draft that contains a figure not found in that data. It is not investment advice; verify figures on the linked tabs before making decisions.

Related: DGX income statement, DGX balance sheet, DGX key metrics, DGX analyst forecast, DGX chart. See the DGX stock overview for the latest quote and news.

DGX AI stock analysis FAQ

What is Quest Diagnostics' dividend yield and track record?

Quest Diagnostics offers a forward annual dividend of $3.44 per share, resulting in a 1.46% dividend yield. The company has paid dividends for 23 consecutive years with a payout ratio of 31.8%.

How does Quest Diagnostics' valuation compare to healthcare peers?

Quest Diagnostics trades at a trailing P/E of 24.6x, below the 28.9x median of its S&P 500 Healthcare peers. Its forward P/E of 19.5x is above the peer median of 16.5x.

What are analyst estimates for Quest Diagnostics' FY2026 results?

For the fiscal year ending December 31, 2026, analysts estimate EPS of $11.20 and revenue of $12.01B, reflecting projected EPS growth of 13.7%.

When does Quest Diagnostics report its next quarterly earnings?

The company's next earnings date is October 22, 2026, having beaten analyst EPS estimates in all 4 of the prior quarters.

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