Heartflow Inc. Common Stock vs Lumen Technologies Inc — how do they compare? Heartflow Inc. Common Stock trades at $49.44 (market cap $4.30B), while Lumen Technologies Inc trades at $4.52 (market cap $4.69B). The key difference: Heartflow Inc. Common Stock and Lumen Technologies Inc are close in size by market cap, and Heartflow Inc. Common Stock is trading nearer its 52-week high, Lumen Technologies Inc nearer its low. Which is the better fit depends on your goals — on Pluang, investors hold Heartflow Inc. Common Stock for 0 Days and Lumen Technologies Inc for 40 Days on average.
| HTFL | LUMN | |
|---|---|---|
Market Cap | $4.30B | $4.69B |
Volume | 1,616,039 | 25,477,875 |
Sector | Health | Media |
52-Week High | $52.21 | $11.83 |
52-Week Low | $20.49 | $4.55 |
Typical Hold Time | 0 Days | 40 Days |
Enterprise Value | $4.17B | $16.31B |
Signals from Pluang's Aura AI — not financial advice
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LUMN trades at $4.99, down 1.19% on the day, with a bearish technical outlook and mixed earnings history. Revenue has declined from $17.5B in 2022 to $12.4B in 2025, with a net loss of $1.74B last year. The company is pivoting to AI and digital networking services, recently announcing a Nasdaq listing and launching Intelligent Internet to capture enterprise demand.
The stock presents a high-risk turnaround opportunity, with deep value indicated by a low P/S of 0.42 but significant challenges including high debt, negative margins, and analyst skepticism. Strategic growth in AI services offers potential upside, but legacy declines and financial instability pose substantial risks for investors.
Trailing returns across standard periods
What Pluang investors did over the last 30 days
HeartFlow, Inc. develops AI-powered software that analyzes coronary CT angiography scans to build personalized 3D heart models for coronary artery disease diagnosis, including its FFRct Analysis, Plaque Analysis, and Roadmap Analysis tools.
Read more on HTFL →With 450,000 route miles of fiber, including over 35,000 route miles of subsea fiber connecting Europe, Asia, and Latin America, Lumen Technologies is one of the United States' largest telecommunications carriers serving global enterprises. Its merger with Level 3 further shifted the company's operations toward businesses (over 70% of revenue) and away from its legacy consumer business. Lumen offers businesses a full menu of communications services, providing colocation and data center services, data transportation, and end-user phone and internet service. On the consumer side, Lumen provides broadband and phone service across 37 states, where it has 4.5 million broadband customers.
Read more on LUMN →