VIOT vs IRBT vs ARLO vs SONO vs AMZN

For growth investors, Amazon.

com, Inc. (AMZN) is the stronger pick with 12. 4% revenue growth year-over-year, versus -23. 4% for iRobot Corporation (IRBT). Viomi Technology Co. , Ltd (VIOT) offers the better valuation at 3. 2x trailing P/E (3. 6x forward), making it the more compelling value choice. Analysts rate Viomi Technology Co. , Ltd (VIOT) a "Buy" — based on 2 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, Viomi Technology Co.

, Ltd (VIOT) is the cheapest at 3. 2x versus Arlo Technologies, Inc. at 106. 4x. On forward P/E, Viomi Technology Co. , Ltd is actually cheaper at 3. 6x.

Over the past 5 years, Arlo Technologies, Inc.

(ARLO) delivered a total return of +123. 1%, compared to -99. 9% for iRobot Corporation (IRBT). Over 10 years, the gap is even starker: AMZN returned +697. 8% versus IRBT's -99. 9%. 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), Viomi Technology Co.

, Ltd (VIOT) is the lower-risk stock at 0. 95β versus iRobot Corporation's 5. 21β — meaning IRBT is approximately 451% more volatile than VIOT relative to the S&P 500. On balance sheet safety, Arlo Technologies, Inc. (ARLO) carries a lower debt/equity ratio of 5% versus 4% for iRobot Corporation — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Amazon.

com, Inc. (AMZN) is pulling ahead at 12. 4% versus -23. 4% for iRobot Corporation (IRBT). On earnings-per-share growth, the picture is similar: Viomi Technology Co. , Ltd grew EPS 273. 2% year-over-year, compared to -64. 5% for Sonos, Inc.. Over a 3-year CAGR, AMZN leads at 11. 7% 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.

Amazon.

com, Inc. (AMZN) is the more profitable company, earning 10. 8% net margin versus -21. 3% for iRobot Corporation — meaning it keeps 10. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AMZN leads at 11. 2% versus -15. 1% for IRBT. At the gross margin level — before operating expenses — AMZN leads at 50. 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, Viomi Technology Co.

, Ltd (VIOT) trades at 3. 6x forward P/E versus 47. 3x for Sonos, Inc. — 43. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for SONO: 31. 0% to $19. 50.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Amazon.

com, Inc. (AMZN) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+697. 8% 10Y return). iRobot Corporation (IRBT) carries a higher beta of 5. 21 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AMZN: +697. 8%, IRBT: -99. 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 (VIOT (Consumer Cyclical) and IRBT (Consumer Cyclical) and ARLO (Industrials) and SONO (Technology) and AMZN (Consumer Cyclical)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: VIOT is a small-cap deep-value stock; IRBT is a small-cap quality compounder stock; ARLO is a small-cap quality compounder stock; SONO is a small-cap quality compounder stock; AMZN is a mega-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.