T-Mobile US Inc Market Cap

Data as of August 04, 2026

How It's Calculated

What This Means

T-Mobile US Inc has a market capitalization of $185.26B, classifying it as Large Cap — a major company by market standards. Market cap represents the total value of all outstanding shares and is a key indicator of a company's size.

About T-Mobile US Inc

T-Mobile US Inc (TMUS) operates in the Telecommunication sector, specifically in Telecommunication. With a market capitalization of about $185.26B, it ranks as a large-cap stock — a major established company.

Shares recently traded near $177.09, within a 52-week range of $165.66 to $261.56 (-32.3% from the high, +6.9% from the low). Beta of 0.34 indicates relatively lower volatility versus the market.

Trailing profit margin is about 11.4%, signaling a solid profit margin for its industry.

Understanding This Metric

Market capitalization sums the market value of all outstanding shares. It helps classify T-Mobile US Inc by size — mega-cap, large-cap, and mid-cap stocks tend to have different liquidity, volatility, and index inclusion profiles. Size alone does not determine quality, but it frames risk and how widely the stock is held.

Sector Comparison

Among Telecommunication names on our S&P 100 coverage, T-Mobile US Inc's market cap of $185.26B can be compared with peers such as VZ ($191.59B), T ($159.32B), CMCSA ($85.03B). Sector context helps interpretation, but each company's growth profile and balance sheet differ — use multiple metrics before drawing conclusions. View all Telecommunication stocks.

Key Takeaways

• TMUS is grouped in the Telecommunication sector for peer comparisons.
• Recent beta of 0.34 suggests lower-than-market price sensitivity.
• Trailing profit margin of 11.4% provides context for how much earnings support the headline multiple.

Related Tools & Guides

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