Quest Diagnostics Inc vs Sirius XM Holdings Inc — how do they compare? Quest Diagnostics Inc trades at $237.51 (market cap $26.21B), while Sirius XM Holdings Inc trades at $28.55 (market cap $9.70B). The key difference: Quest Diagnostics Inc is far larger — about 2.7× Sirius XM Holdings Inc's market cap, and Sirius XM Holdings Inc pays the higher dividend (3.75%). Which is the better fit depends on your goals.
| DGX | SIRI | |
|---|---|---|
Market Cap | $26.21B | $9.70B |
Sector | Health | Media |
52-Week High | $238.50 | $32.59 |
52-Week Low | $173.49 | $19.92 |
Enterprise Value | $31.97B | $18.98B |
Dividend Yield | 1.45% | 3.75% |
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.
Sirius XM Holdings (SIRI) trades at $28.40, down 1.32% with bearish technical signals despite attractive valuation metrics including P/E of 11.56 and P/B of 0.81. The company reported mixed Q2 2026 results with a revenue beat but earnings miss, while maintaining stable cash flow and announcing a $0.27 dividend. Recent news highlights satellite communications growth potential and institutional positioning.
SIRI presents a value opportunity with strong cash generation and dividend yield, though near-term headwinds include subscriber challenges and debt levels. Analyst consensus remains bullish with $33.17 price target representing 17% upside, but investors should monitor execution on subscriber retention and competitive pressures in the evolving audio streaming landscape.
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 →SiriusXM Holdings is now composed of two businesses: SiriusXM and Pandora. SiriusXM transmits music, talk shows, sports, and news via its two satellite radio networks, primarily to consumers in vehicles who pay a subscription fee. The firm's radios come preinstalled on a wide range of light vehicles in the U.S. and Canada. The firm acquired Pandora Media in February 2019 via an all-stock transaction. Pandora is a streaming music platform that offers an ad-supported radio option and a paid on-demand service. Liberty Media owns 80% of SiriusXM, traded through its Liberty SiriusXM Group tracking stock.
Read more on SIRI →