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Quest DiagnosticsDGX

Diagnostics · NYSE · USA

$230.81
Up 1.7% todayClose

Up 30.8% this year and +10.0% since June 26, behind the life science sector at +10.7%. Quest Diagnostics supplies 1 mapped company and buys from 3.

Market cap
$25.1B
This year
+30.8%
1 year
+24.8%
P/E
23.6
P/S
2.2
P/B
3.3

Price vs the life science sector

since Jun 26DGXLife science sector, equal weight
Quest Diagnostics (DGX) vs the Life science sector indexDaily closes from Jun 26, 2026 to Oct 8, 2026, each line rebased to its own first value. DGX: +10.0% from Jun 26, 2026 to Oct 8, 2026. Life science sector index: +10.7% from Jun 26, 2026 to Oct 8, 2026.−5%0%+5%+10%+15%Jun 26AugSepOct 8DGX +10.0%Sector +10.7% Quest Diagnostics (DGX) vs the Life science sector indexDaily closes from Jun 26, 2026 to Oct 8, 2026, each line rebased to its own first value. DGX: +10.0% from Jun 26, 2026 to Oct 8, 2026. Life science sector index: +10.7% from Jun 26, 2026 to Oct 8, 2026.0%+10%Jun 26AugSepOct 8DGX+10.0%Sector+10.7%

Supply chain

3 suppliers · 1 customer
SUPPLIERS →→ CUSTOMERSAbbott Laboratories (ABT)ABTAbbott Laboratories−0.2%Hologic (HOLX)HOLXHologicIllumina (ILMN)ILMNIllumina−1.2%The Cigna Group (CI)CIThe Cigna Group+0.9%DGXQuest Diagnosti…

Suppliers 3

Customers 1

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About Quest Diagnostics

A nationwide lab network that does routine testing at volume, with more advanced diagnostics and health data work on top.

Theme exposure

Clinical labsDiagnosticsHealth data

Products

  • Routine laboratory testing
  • Advanced diagnostics
  • Health data & insights

Competitors

  • Labcorp
  • Sonic Healthcare
  • Exact Sciences

Risks

  • Reimbursement pressure
  • Competition from hospital labs

Same segment: Diagnostics

Tests, imaging and assays that support clinical decision-making. Segment 6 of 8 in the Medicine, pharma & life science value chain.

Abbott LaboratoriesABT−0.2%NateraNTRA−1.2%IDEXX LaboratoriesIDXX+1.3%LabcorpLH+0.7%HologicHOLXBio-Rad LaboratoriesBIO−2.0%

Compare DGX

Side by side with the largest companies in the same segment.

DGX vs ABTDGX vs NTRADGX vs IDXXDGX vs LHDGX vs HOLXDGX vs BIO

See where Quest Diagnostics sits in the full Medicine, pharma & life science map: every segment from upstream suppliers to end markets, with daily metrics.

Open the Life science value chain →