Quest Diagnostics Inc vs Digital Realty Trust, Inc. — how do they compare? Quest Diagnostics Inc trades at $205.45 (market cap $22.80B), while Digital Realty Trust, Inc. trades at $174.82 (market cap $64.05B). The key difference: Digital Realty Trust, Inc. is far larger — about 2.8× Quest Diagnostics Inc's market cap, and Digital Realty Trust, Inc. pays the higher dividend (2.82%). Which is the better fit depends on your goals.
| DGX | DLR | |
|---|---|---|
Market Cap | $22.80B | $64.05B |
Sector | Health | Real Estate |
52-Week High | $216.02 | $203.91 |
52-Week Low | $166.42 | $147.93 |
Enterprise Value | $28.82B | $81.57B |
Dividend Yield | 1.67% | 2.82% |
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.
Digital Realty Trust (DLR) trades at $177.92, down 1.38% on the day, with a bearish technical signal and mixed earnings history. The company shows strong fundamentals with 2025 revenue of $6.11B and net income of $1.31B, though its P/E ratio of 47.19 suggests premium valuation. Recent news highlights DLR's $7.8B acquisition of Blackstone's data center stake, positioning it for AI-driven growth.
DLR presents a growth opportunity in data center infrastructure supported by AI demand, with a consensus price target of $219.50 implying 23% upside. Risks include high debt levels, execution of recent acquisitions, and interest rate sensitivity. Analyst sentiment remains bullish with 59.57% buy ratings, but investors should weigh valuation concerns against long-term expansion potential.
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 →Digital Realty owns and operates nearly 300 data centers worldwide. It has more than 35 million rentable square feet across five continents. Digital's offerings range from retail co-location, where an enterprise may rent a single cabinet and rely on Digital to provide all the accommodations, to cold shells, where hyperscale cloud service providers can simply rent much, or all, of a barren, power-connected building. In recent years, Digital Realty has de-emphasized cold shells and now primarily provides higher-level service to tenants, which outsource their related IT needs to Digital. Digital Realty has also moved more into the co-location business, increasingly serving enterprises and facilitating network connections. Digital Realty operates as a real estate investment trust.
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