T-Mobile US, Inc. Market Cap

Data as of June 01, 2026

How It's Calculated

What This Means

T-Mobile US, Inc. has a market capitalization of $202.95B, classifying it as Mega Cap — one of the largest companies in the world. 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 Communication Services sector, specifically in Telecom Services. With a market capitalization of about $202.95B, it ranks as a mega-cap stock — one of the largest publicly traded companies.

Shares recently traded near $187.53, within a 52-week range of $181.36 to $261.56 (-28.3% from the high, +3.4% from the low). Beta of 0.32 indicates relatively lower volatility versus the market.

Trailing profit margin is about 11.6%, 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 Communication Services names on our S&P 100 coverage, T-Mobile US, Inc.'s market cap of $202.95B can be compared with peers such as GOOGL ($4.61T), GOOG ($4.56T), META ($1.61T). Sector context helps interpretation, but each company's growth profile and balance sheet differ — use multiple metrics before drawing conclusions. View all Communication Services stocks.

Key Takeaways

• TMUS is grouped in the Communication Services sector for peer comparisons.
• Recent beta of 0.32 suggests lower-than-market price sensitivity.
• Trailing profit margin of 11.6% provides context for how much earnings support the headline multiple.

Related Tools & Guides

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