Quest Diagnostics Inc vs Western Digital Corp — how do they compare? Quest Diagnostics Inc trades at $238.51 (market cap $26.21B), while Western Digital Corp trades at $456.99 (market cap $150.95B). The key difference: Western Digital Corp is far larger — about 5.8× Quest Diagnostics Inc's market cap, and Quest Diagnostics Inc pays the higher dividend (1.45%). Which is the better fit depends on your goals.
| DGX | WDC | |
|---|---|---|
Market Cap | $26.21B | $150.95B |
Sector | Health | Technology |
52-Week High | $238.50 | $746.23 |
52-Week Low | $173.49 | $74.66 |
Enterprise Value | $31.97B | $150.42B |
Dividend Yield | 1.45% | 0.14% |
Signals from Pluang's Aura AI — not financial advice
Quest Diagnostics (DGX) trades at $237.24, down 0.16% on the day, with a bullish technical signal from moving averages. The company reported strong Q2 2026 earnings, beating estimates with EPS of $3.12 and raising its full-year outlook, driven by robust testing demand. Revenue grew to $11.04B in 2025, with net income of $992M, though margins face pressure from lower-margin deals and rising costs.
The outlook is positive due to raised guidance and AI integration enhancing efficiency, but risks include debt levels and margin compression. Analysts maintain a cautious buy stance with a $249.50 price target, indicating modest upside potential from current levels amid competitive and cost challenges.
Western Digital (WDC) trades at $454.50, up 3.74% in the last session, with a bearish technical signal but strong fundamental performance. Recent earnings beats, including Q2 2026 EPS of $3.56 versus $3.31 expected, highlight robust AI-driven storage demand. The stock is near resistance at $458, with a consensus analyst price target of $665.15 suggesting significant upside potential.
Outlook is positive due to sustained AI infrastructure growth and margin expansion, but risks include valuation concerns and competitive threats. Analyst consensus is strongly bullish with 72% buy ratings, though technical indicators signal near-term caution. Investors should weigh strong earnings momentum against potential volatility from stretched valuations.
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 →Western Digital is a vertically integrated supplier of data storage solutions, spanning both hard disk drives and solid-state drives. In the HDD market it forms a practical duopoly with Seagate, and it is the largest global producer of NAND flash chips for SSDs in a joint venture with competitor Kioxia.
Read more on WDC →