TotalMarketCap

Quest Diagnostics

DGXNYSE United StatesHealth CareMedical Specialities

Market cap

$25.208 B

$228.39 -1.65%

Close of 7 Oct 2026

As of 7 Oct 2026, Quest Diagnostics (DGX) has a market capitalization of $25.2B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$11.0B

#395 by revenue

Earnings

$992.0M

#395 by earnings

Shares outstanding

110,373,360

Latest filing cover page

P/E ratio

25.4

Cap ÷ net income

Medical Specialities, ranked by market cap

All 44 →
  1. #7CenteneCNC$31.9B
  2. #8LabcorpLH$25.3B
  3. #9Quest DiagnosticsDGX$25.2B
  4. #10Guardant HealthGH$22.9B
  5. #11Molina HealthcareMOH$10.2B

What if Quest Diagnostics were worth as much as…

Open the what-if tool →

Gold $28.8T

$260,836.80

Per share 1,142× higher

Bitcoin $1.67T

$15,132.71

Per share 66.3× higher

Nvidia $5.77T

$52,238.00

Per share 229× higher

Or at a round number

$50.0B$100.0B$200.0B$500.0B

Where these numbers come from

Share counts and financials for Quest Diagnostics are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 8 Oct 2026. Read the methodology.