AMX vs TMUS

For growth investors, T-Mobile US, Inc.

(TMUS) is the stronger pick with 8. 5% revenue growth year-over-year, versus 1. 8% for América Móvil, S. A. B. de C. V. (AMX). América Móvil, S. A. B. de C. V. (AMX) offers the better valuation at 18. 2x trailing P/E (0. 8x forward), making it the more compelling value choice. Analysts rate América Móvil, S. A. B. de C. V. (AMX) a "Buy" — based on 24 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, América Móvil, S.

A. B. de C. V. (AMX) is the cheapest at 18. 2x versus T-Mobile US, Inc. at 19. 9x. On forward P/E, América Móvil, S. A. B. de C. V. is actually cheaper at 0. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: América Móvil, S. A. B. de C. V. wins at 0. 04x versus T-Mobile US, Inc. 's 0. 62x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, América Móvil, S.

A. B. de C. V. (AMX) delivered a total return of +258. 8%, compared to +45. 0% for T-Mobile US, Inc. (TMUS). Over 10 years, the gap is even starker: TMUS returned +409. 8% versus AMX's +312. 6%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), T-Mobile US, Inc.

(TMUS) is the lower-risk stock at -0. 28β versus América Móvil, S. A. B. de C. V. 's 0. 50β — meaning AMX is approximately -280% more volatile than TMUS relative to the S&P 500. On balance sheet safety, T-Mobile US, Inc. (TMUS) carries a lower debt/equity ratio of 2% versus 2% for América Móvil, S. A. B. de C. V. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), T-Mobile US, Inc.

(TMUS) is pulling ahead at 8. 5% versus 1. 8% for América Móvil, S. A. B. de C. V. (AMX). On earnings-per-share growth, the picture is similar: América Móvil, S. A. B. de C. V. grew EPS 248. 6% year-over-year, compared to 0. 6% for T-Mobile US, Inc.. Over a 3-year CAGR, TMUS leads at 3. 5% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

T-Mobile US, Inc.

(TMUS) is the more profitable company, earning 12. 4% net margin versus 8. 8% for América Móvil, S. A. B. de C. V. — meaning it keeps 12. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TMUS leads at 21. 2% versus 21. 0% for AMX. At the gross margin level — before operating expenses — TMUS leads at 47. 6%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, América Móvil, S. A. B. de C. V. (AMX) is the more undervalued stock at a PEG of 0. 04x versus T-Mobile US, Inc. 's 0. 62x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, América Móvil, S. A. B. de C. V. (AMX) trades at 0. 8x forward P/E versus 18. 4x for T-Mobile US, Inc. — 17. 5x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for TMUS: 31. 5% to $254. 08.

All stocks in this comparison pay dividends.

América Móvil, S. A. B. de C. V. (AMX) offers the highest yield at 2. 2%, versus 1. 9% for T-Mobile US, Inc. (TMUS).

For long-horizon retirement investors, T-Mobile US, Inc.

(TMUS) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0. 28), 1. 9% yield, +409. 8% 10Y return). Both have compounded well over 10 years (TMUS: +409. 8%, AMX: +312. 6%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Communication Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.