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Compare · DGX vs ILMN

DGX vs ILMN

Side-by-side comparison of Quest Diagnostics Incorporated (DGX) and Illumina Inc. (ILMN): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both DGX and ILMN operate in Medical Specialities (Health Care), so they compete in similar markets.
  • ILMN is the larger of the two at $21.57B, about the same size as DGX ($20.94B).
  • Over the past year, DGX is up 7.1% and ILMN is up 86.8% - ILMN leads by 79.7 points.
  • DGX has been more active in the news (14 items in the past 4 weeks vs 4 for ILMN).
  • Both have 25 recent analyst ratings on file.
PerformanceDGX+7.09%ILMN+86.82%
2025-05-07+0.00%2026-05-06
MetricDGXILMN
Company
Quest Diagnostics Incorporated
Illumina Inc.
Price
$189.13-0.85%
$142.59+2.53%
Market cap
$20.94B
$21.57B
1M return
-3.89%
+12.76%
1Y return
+7.09%
+86.82%
Industry
Medical Specialities
Medical Specialities
Exchange
NYSE
NASDAQ
IPO
2000
News (4w)
14
4
Recent ratings
25
25
DGX

Quest Diagnostics Incorporated

Quest Diagnostics Incorporated provides diagnostic testing, information, and services in the United States and internationally. The company develops and delivers diagnostic information services, such as routine testing, non-routine and advanced clinical testing, anatomic pathology testing, and other diagnostic information services. It offers diagnostic information services primarily under the Quest Diagnostics brand, as well as under the AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum brands to patients, clinicians, hospitals, independent delivery networks, health plans, employers, direct contract entities, and accountable care organizations through a network of laboratories, patient service centers, phlebotomists in physician offices, call centers and mobile paramedics, nurses, and other health and wellness professionals. The company also provides risk assessment services for the life insurance industry; and healthcare organizations and clinicians robust information technology solutions. Quest Diagnostics Incorporated was founded in 1967 and is headquartered in Secaucus, New Jersey.

ILMN

Illumina Inc.

Illumina, Inc. provides sequencing and array-based solutions for genetic and genomic analysis. Its products and services serve customers in a range of markets enabling the adoption of genomic solutions in research and clinical settings for applications in the life sciences, oncology, reproductive health, agriculture, and other emerging segments. The company provides instruments and consumables used in genetic analysis; and genotyping and sequencing services, instrument service contracts, and development and licensing agreements. Its customers include genomic research centers, academic institutions, government laboratories, and hospitals, as well as pharmaceutical, biotechnology, commercial molecular diagnostic laboratories, and consumer genomics companies. The company markets and distributes its products directly to customers in North America, Europe, Latin America, and the Asia-Pacific region, as well as sells through life-science distributors in various markets within Europe, the Asia-Pacific region, Latin America, the Middle East, and Africa. It has a collaboration agreement with Geneseeq Technology Inc. to develop comprehensive in-vitro diagnostic (IVD) NGS testing kits for cancer. The company was incorporated in 1998 and is headquartered in San Diego, California.

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