Quest Diagnostics (DGX) Market Cap 1997–2026

As of October 29, 2026, Quest Diagnostics had a market cap of $27.82 billion, which increased by 2.96% compared to the previous trading day. Market capitalization, often referred to as market cap, represents the total value of a company's outstanding shares on the stock market and is a common measure of its overall size and valuation.

Data updated: Oct 29, 2026, 4:00 PM ET
Quest Diagnostics logo

Quest Diagnostics Inc. (DGX)

🌍 United States 📈 NYSE 🏭 Health Care 🏢 Health Care Providers & Services
Latest Market Cap
$27.82B ▲ 2.96%
Start of 2026
$19.3B ▲ 44.15%
1 Year Ago
$19.55B ▲ 42.30%
All-Time High
$27.82B — 0.00%


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Note: Each point on the chart represents the market capitalization at the end of the trading day.
Source: Data compiled from EDGAR filings, Bloomberg and Yahoo Finance.

📈 Quest Diagnostics Market Cap History by Year and Month

Quest Diagnostics Market Cap History by Year and Month
Year / MonthMarket Cap% Change
2026$27.82B▲ 44.15%
$27.82B▲ 8.50%
$25.64B▼ 2.99%
$26.43B▲ 3.12%
$25.63B▲ 8.92%
$23.53B▲ 9.09%
$21.57B▲ 0.33%
$21.5B▼ 0.14%
$21.53B▼ 7.83%
$23.36B▲ 12.25%
$20.81B▲ 7.82%
2025$19.3B▲ 15.65%
2024$16.688B▲ 7.64%
2023$15.503B▼ 12.99%
2022$17.817B▼ 13.46%
All market cap values reflect closing prices for the period shown.

📊 Quest Diagnostics Market Cap and Other Industry Peers

Below are selected companies from the Health Care sector / subsector:

  1. $115.44B
  2. $78.69B
  3. $50.14B
  4. $33.97B
  5. $29.89B
  6. $27.82B
  7. $24.76B
  8. $21.78B
  9. $12.99B
  10. $12.36B
  11. $11.89B
  12. $11.59B
  13. $10.41B
  14. $10.35B
  15. $9.67B
  16. $8.4B
  17. $7.87B
  18. $7.05B
  19. $6.92B
  20. $5.79B

Data reflect the most recent market capitalization values available.

Note: Market capitalization figures are based on available sources and may differ slightly from actual values, particularly for historical data.