Quest Diagnostics Inc vs Vistra Corp — how do they compare? Quest Diagnostics Inc trades at $205.45 (market cap $22.80B), while Vistra Corp trades at $159.6 (market cap $53.42B). The key difference: Vistra Corp is far larger — about 2.3× Quest Diagnostics Inc's market cap, and Quest Diagnostics Inc pays the higher dividend (1.67%). Which is the better fit depends on your goals.
| DGX | VST | |
|---|---|---|
Market Cap | $22.80B | $53.42B |
Sector | Health | Technology |
52-Week High | $216.02 | $217.92 |
52-Week Low | $166.42 | $134.71 |
Enterprise Value | $28.82B | $75.17B |
Dividend Yield | 1.67% | 0.58% |
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.
Vistra Corp. (VST) trades at $158.12, down 0.47% on the day, with a bullish technical signal from moving averages and neutral oscillators. The company reported strong Q1 2026 earnings beating estimates, with revenue growth from $17.74B in 2025 to $19.4B projected for 2026. Net income margin improved to 11.52%, supported by robust cash flow from operations of $4.07B. Recent news highlights Vistra's positioning in the AI power demand surge and long-term power purchase agreements with major tech firms.
Outlook remains positive with a consensus price target of $230.50, implying significant upside. Key opportunities include exposure to growing electricity demand and strategic renewables focus. Risks involve power-price volatility, high debt levels, and execution of growth projects. Analyst sentiment is strongly bullish with 91% buy ratings, though investors should monitor Q2 2026 earnings due August 7 for confirmation of growth trajectory.
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 →Vistra is a leading integrated retail electricity and power generation company that serves as a critical infrastructure provider for the digital economy. It operates a diversified portfolio of zero-carbon nuclear and renewable assets alongside a massive, flexible natural gas fleet, positioning it as an indispensable partner for energy-intensive AI data centers and industrial electrification.
Read more on VST →