DIOD vs SIMO

For growth investors, Diodes Incorporated (DIOD) is the stronger pick with 13.

0% revenue growth year-over-year, versus 10. 2% for Silicon Motion Technology Corporation (SIMO). Silicon Motion Technology Corporation (SIMO) offers the better valuation at 16. 6x trailing P/E (29. 9x forward), making it the more compelling value choice. Analysts rate Diodes Incorporated (DIOD) a "Buy" — based on 13 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, Silicon Motion Technology Corporation (SIMO) is the cheapest at 16.

6x versus Diodes Incorporated at 78. 7x. On forward P/E, Silicon Motion Technology Corporation is actually cheaper at 29. 9x.

Over the past 5 years, Silicon Motion Technology Corporation (SIMO) delivered a total return of +267.

4%, compared to +51. 0% for Diodes Incorporated (DIOD). Over 10 years, the gap is even starker: SIMO returned +533. 8% versus DIOD's +490. 7%. 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), Silicon Motion Technology Corporation (SIMO) is the lower-risk stock at 1.

90β versus Diodes Incorporated's 2. 11β — meaning DIOD is approximately 11% more volatile than SIMO relative to the S&P 500.

By revenue growth (latest reported year), Diodes Incorporated (DIOD) is pulling ahead at 13.

0% versus 10. 2% for Silicon Motion Technology Corporation (SIMO). On earnings-per-share growth, the picture is similar: Diodes Incorporated grew EPS 50. 5% year-over-year, compared to 38. 3% for Silicon Motion Technology Corporation. Over a 3-year CAGR, SIMO leads at -2. 2% 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.

Silicon Motion Technology Corporation (SIMO) is the more profitable company, earning 13.

9% net margin versus 4. 5% for Diodes Incorporated — meaning it keeps 13. 9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: SIMO leads at 10. 5% versus 2. 4% for DIOD. At the gross margin level — before operating expenses — SIMO leads at 48. 3%, 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.

On forward earnings alone, Silicon Motion Technology Corporation (SIMO) trades at 29.

9x forward P/E versus 48. 5x for Diodes Incorporated — 18. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for SIMO: 3. 5% to $251. 25.

In this comparison, SIMO (3.

3% yield) pays a dividend. DIOD does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Silicon Motion Technology Corporation (SIMO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (3.

3% yield, +533. 8% 10Y return). Diodes Incorporated (DIOD) carries a higher beta of 2. 11 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SIMO: +533. 8%, DIOD: +490. 7%), 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 Technology sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: DIOD is a small-cap quality compounder stock; SIMO is a small-cap deep-value stock. SIMO pays a dividend while DIOD does 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.