Quest Diagnostics Inc vs Digital Realty Trust, Inc. — how do they compare? Quest Diagnostics Inc trades at $237.51 (market cap $26.23B), while Digital Realty Trust, Inc. trades at $191.45 (market cap $70.79B). The key difference: Digital Realty Trust, Inc. is far larger — about 2.7× Quest Diagnostics Inc's market cap, and Digital Realty Trust, Inc. pays the higher dividend (2.55%). Which is the better fit depends on your goals.
| DGX | DLR | |
|---|---|---|
Market Cap | $26.23B | $70.79B |
Sector | Health | Real Estate |
52-Week High | $238.50 | $203.91 |
52-Week Low | $173.49 | $147.93 |
Enterprise Value | $31.99B | $89.50B |
Dividend Yield | 1.45% | 2.55% |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $238.35, down slightly by 0.06% today, but maintains a bullish technical trend with strong earnings momentum, having beaten EPS estimates in the last three quarters. Revenue grew to $11.04 billion in 2025, with net income reaching $992 million, and the company raised its 2026 outlook amid surging testing demand. Analyst consensus is a Buy with a $249.50 price target, though valuation multiples like a P/E of 25.3 suggest premium pricing.
The outlook for DGX is positive due to robust demand for diagnostic services, AI integration, and partnerships driving growth, but risks include margin pressure from lower-margin deals and high debt levels. Investors may find opportunity in sustained earnings beats and dividend payouts, yet should monitor competitive and cost pressures that could affect profitability.
Digital Realty Trust (DLR) trades at $193.80, up 0.64% today, with a bullish technical signal from moving averages and support at $192. Recent Q2 2026 earnings beat expectations with core FFO of $2.13 per share, driven by record leasing and a $1.9 billion backlog. The company raised its 2026 guidance, reflecting strong AI-driven data center demand. Valuation ratios are elevated, with a P/E of 245.32 and P/S of 25.47, indicating premium pricing relative to earnings and sales.
DLR's outlook is positive due to robust AI infrastructure demand and raised guidance, but high valuation and interest rate sensitivity pose risks. Analyst consensus is bullish with a $216.56 price target, though net cash flow turned negative in 2025. Investors should weigh growth potential against execution risks in a competitive sector.
Trailing returns across standard periods
Latest headlines on both assets
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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