Quest Diagnostics Inc vs Illumina, Inc. — how do they compare? Quest Diagnostics Inc trades at $205.66 (market cap $22.80B), while Illumina, Inc. trades at $188.29 (market cap $28.93B). The key difference: Illumina, Inc. is the larger of the two by market cap, and Quest Diagnostics Inc pays a 1.67% dividend while Illumina, Inc. pays none. Which is the better fit depends on your goals.
| DGX | ILMN | |
|---|---|---|
Market Cap | $22.80B | $28.93B |
Sector | Health | Health |
52-Week High | $216.02 | $194.33 |
52-Week Low | $166.42 | $91.00 |
Enterprise Value | $28.82B | $30.32B |
Dividend Yield | 1.67% | — |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $207.35, showing minimal daily movement with a slight decline of 0.04%. The stock maintains a bullish technical stance with recent earnings beats and analyst consensus pointing to upside potential. Recent developments include New York State approval for Haystack MRD testing and strong momentum across diagnostic channels. Revenue growth accelerated to $11.04 billion in 2025 with consistent profitability margins around 9%.
DGX presents a balanced investment case with 38% analyst buy ratings and a $227.75 price target suggesting 10% upside. The company demonstrates steady revenue growth and operational efficiency, though elevated debt levels and policy risks require monitoring. Second quarter earnings on July 23, 2026, will be crucial for validating current momentum and growth trajectory.
Illumina (ILMN) trades at $190.05, showing strong momentum with a 43.7% gain year-to-date and recent earnings beats. The stock is technically bullish, trading near resistance at $191 with solid fundamentals including 19.42% net margins and robust cash flow. Recent leadership appointments and product launches like StrataMap Spatial Solution highlight ongoing innovation in genomics sequencing.
Outlook remains positive driven by sequencing demand and margin expansion, but risks include competitive pressure from Roche's new sequencer and China market weakness. Analyst consensus is bullish with 51% buy ratings, though the current price exceeds the $174.44 target, suggesting near-term valuation concerns.
Trailing returns across standard periods
Quest Diagnostics is a leading independent provider of diagnostic testing, information, and services in the U.S. The company generates over 95% of its revenue through clinical testing, anatomic pathology, esoteric testing, and substance abuse testing with specimens collected at its national network of roughly 2,300 patient service centers, as well as multiple doctors offices and hospitals. The firm also runs a much smaller diagnostic solutions segment that provides clinical trials testing, risk assessment services, and information technology solutions.
Read more on DGX →Illumina provides tools and services to analyze genetic material with life science and clinical lab applications. The company generates over 90% of its revenue from sequencing instruments, consumables, and services. Illumina's high-throughput technology enables whole genome sequencing in humans and other large organisms. Its lower throughput tools enable applications that require smaller data outputs, such as viral and cancer tumor screening. Illumina also sells microarrays (less than 10% of sales) that enable lower-cost, focused genetic screening with primarily consumer and agricultural applications.
Read more on ILMN →