SKM vs T vs VZ vs TMUS

For growth investors, T-Mobile US, Inc.

(TMUS) is the stronger pick with 8. 5% revenue growth year-over-year, versus -3. 4% for SK Telecom Co. ,Ltd (SKM). AT&T Inc. (T) offers the better valuation at 8. 3x trailing P/E (10. 9x forward), making it the more compelling value choice. Analysts rate T-Mobile US, Inc. (TMUS) a "Buy" — based on 54 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, AT&T Inc.

(T) is the cheapest at 8. 3x versus SK Telecom Co. ,Ltd at 51. 5x. On forward P/E, SK Telecom Co. ,Ltd is actually cheaper at 0. 0x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: SK Telecom Co. ,Ltd wins at 0. 00x 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, SK Telecom Co.

,Ltd (SKM) delivered a total return of +96. 5%, compared to +2. 8% for Verizon Communications Inc. (VZ). Over 10 years, the gap is even starker: TMUS returned +407. 2% versus VZ's +41. 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 SK Telecom Co. ,Ltd's 0. 34β — meaning SKM is approximately -220% more volatile than TMUS relative to the S&P 500. On balance sheet safety, SK Telecom Co. ,Ltd (SKM) carries a lower debt/equity ratio of 86% versus 2% for T-Mobile US, Inc. — 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 -3. 4% for SK Telecom Co. ,Ltd (SKM). On earnings-per-share growth, the picture is similar: AT&T Inc. grew EPS 104. 0% year-over-year, compared to -68. 0% for SK Telecom Co. ,Ltd. 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.

AT&T Inc.

(T) is the more profitable company, earning 17. 4% net margin versus 2. 4% for SK Telecom Co. ,Ltd — meaning it keeps 17. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TMUS leads at 21. 2% versus 6. 3% for SKM. At the gross margin level — before operating expenses — T leads at 79. 8%, 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, SK Telecom Co. ,Ltd (SKM) is the more undervalued stock at a PEG of 0. 00x 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, SK Telecom Co. ,Ltd (SKM) trades at 0. 0x forward P/E versus 18. 5x for T-Mobile US, Inc. — 18. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for TMUS: 30. 8% to $254. 08.

All stocks in this comparison pay dividends.

Verizon Communications Inc. (VZ) offers the highest yield at 5. 8%, 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, +407. 2% 10Y return). Both have compounded well over 10 years (TMUS: +407. 2%, SKM: +239. 9%), 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.

In terms of investment character: SKM is a mid-cap income-oriented stock; T is a mid-cap deep-value stock; VZ is a mid-cap deep-value stock; TMUS is a large-cap quality compounder stock. 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.