AMKR vs UTSI vs ASX vs SIFY

For growth investors, Sify Technologies Limited (SIFY) is the stronger pick with 11.

9% revenue growth year-over-year, versus -30. 9% for UTStarcom Holdings Corp. (UTSI). Amkor Technology, Inc. (AMKR) offers the better valuation at 51. 1x trailing P/E (36. 1x forward), making it the more compelling value choice. Analysts rate ASE Technology Holding Co. , Ltd. (ASX) a "Buy" — based on 5 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, Amkor Technology, Inc.

(AMKR) is the cheapest at 51. 1x versus ASE Technology Holding Co. , Ltd. at 58. 2x. On forward P/E, ASE Technology Holding Co. , Ltd. is actually cheaper at 1. 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: ASE Technology Holding Co. , Ltd. wins at 0. 13x versus Amkor Technology, Inc. 's 25. 97x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, ASE Technology Holding Co.

, Ltd. (ASX) delivered a total return of +368. 1%, compared to -48. 2% for UTStarcom Holdings Corp. (UTSI). Over 10 years, the gap is even starker: AMKR returned +1299% versus UTSI's -68. 2%. 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), UTStarcom Holdings Corp.

(UTSI) is the lower-risk stock at 0. 18β versus Amkor Technology, Inc. 's 2. 90β — meaning AMKR is approximately 1540% more volatile than UTSI relative to the S&P 500. On balance sheet safety, UTStarcom Holdings Corp. (UTSI) carries a lower debt/equity ratio of 4% versus 196% for Sify Technologies Limited — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Sify Technologies Limited (SIFY) is pulling ahead at 11.

9% versus -30. 9% for UTStarcom Holdings Corp. (UTSI). On earnings-per-share growth, the picture is similar: ASE Technology Holding Co. , Ltd. grew EPS 27. 7% year-over-year, compared to -877. 8% for Sify Technologies Limited. Over a 3-year CAGR, SIFY leads at 13. 9% 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.

ASE Technology Holding Co.

, Ltd. (ASX) is the more profitable company, earning 6. 3% net margin versus -40. 2% for UTStarcom Holdings Corp. — meaning it keeps 6. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ASX leads at 7. 9% versus -67. 4% for UTSI. At the gross margin level — before operating expenses — SIFY leads at 37. 5%, 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, ASE Technology Holding Co. , Ltd. (ASX) is the more undervalued stock at a PEG of 0. 13x versus Amkor Technology, Inc. 's 25. 97x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, ASE Technology Holding Co. , Ltd. (ASX) trades at 1. 0x forward P/E versus 36. 1x for Amkor Technology, Inc. — 35. 0x cheaper on a one-year earnings basis.

In this comparison, ASX (1.

0% yield), AMKR (0. 4% yield) pay a dividend. UTSI, SIFY do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, UTStarcom Holdings Corp.

(UTSI) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 18)). Both have compounded well over 10 years (UTSI: -68. 2%, SIFY: +147. 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.

These companies operate in different sectors (AMKR (Technology) and UTSI (Technology) and ASX (Technology) and SIFY (Communication Services)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

ASX pays a dividend while AMKR, UTSI, SIFY do not, making them suitable for different income and tax situations. 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.