SIMO vs AMBA vs ALGM vs NVDA

For growth investors, NVIDIA Corporation (NVDA) is the stronger pick with 65.

5% revenue growth year-over-year, versus -30. 9% for Allegro MicroSystems, Inc. (ALGM). 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 Silicon Motion Technology Corporation (SIMO) a "Buy" — based on 31 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 NVIDIA Corporation at 43. 2x. On forward P/E, NVIDIA Corporation is actually cheaper at 25. 6x — 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: NVIDIA Corporation wins at 0. 27x versus Silicon Motion Technology Corporation's 0. 66x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, NVIDIA Corporation (NVDA) delivered a total return of +1329%, compared to -19.

8% for Ambarella, Inc. (AMBA). Over 10 years, the gap is even starker: NVDA returned +239. 0% versus AMBA's +94. 1%. 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), NVIDIA Corporation (NVDA) is the lower-risk stock at 1.

73β versus Ambarella, Inc. 's 2. 53β — meaning AMBA is approximately 47% more volatile than NVDA relative to the S&P 500. On balance sheet safety, Ambarella, Inc. (AMBA) carries a lower debt/equity ratio of 1% versus 40% for Allegro MicroSystems, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), NVIDIA Corporation (NVDA) is pulling ahead at 65.

5% versus -30. 9% for Allegro MicroSystems, Inc. (ALGM). On earnings-per-share growth, the picture is similar: NVIDIA Corporation grew EPS 66. 7% year-over-year, compared to -150. 0% for Allegro MicroSystems, Inc.. Over a 3-year CAGR, NVDA leads at 100. 0% 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.

NVIDIA Corporation (NVDA) is the more profitable company, earning 55.

6% net margin versus -41. 1% for Ambarella, Inc. — meaning it keeps 55. 6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: NVDA leads at 60. 4% versus -44. 4% for AMBA. At the gross margin level — before operating expenses — NVDA leads at 71. 1%, 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, NVIDIA Corporation (NVDA) is the more undervalued stock at a PEG of 0. 27x versus Silicon Motion Technology Corporation's 0. 66x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, NVIDIA Corporation (NVDA) trades at 25. 6x forward P/E versus 95. 4x for Ambarella, Inc. — 69. 8x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AMBA: 32. 4% to $98. 33.

In this comparison, SIMO (3.

3% yield) pays a dividend. AMBA, ALGM, NVDA do 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). Ambarella, Inc. (AMBA) carries a higher beta of 2. 53 — 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%, AMBA: +94. 1%), 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: SIMO is a small-cap deep-value stock; AMBA is a small-cap high-growth stock; ALGM is a small-cap quality compounder stock; NVDA is a mega-cap high-growth stock. SIMO pays a dividend while AMBA, ALGM, NVDA 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.