SOTK vs MKSI

For growth investors, MKS Inc.

(MKSI) is the stronger pick with 9. 6% revenue growth year-over-year, versus 4. 1% for Sono-Tek Corporation (SOTK). Sono-Tek Corporation (SOTK) offers the better valuation at 60. 1x trailing P/E, making it the more compelling value choice. Analysts rate MKS Inc. (MKSI) a "Buy" — based on 29 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, Sono-Tek Corporation (SOTK) is the cheapest at 60.

1x versus MKS Inc. at 68. 8x.

Over the past 5 years, MKS Inc.

(MKSI) delivered a total return of +66. 5%, compared to +18. 8% for Sono-Tek Corporation (SOTK). Over 10 years, the gap is even starker: MKSI returned +750. 6% versus SOTK's +386. 0%. 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), Sono-Tek Corporation (SOTK) is the lower-risk stock at 0.

43β versus MKS Inc. 's 2. 64β — meaning MKSI is approximately 514% more volatile than SOTK relative to the S&P 500.

By revenue growth (latest reported year), MKS Inc.

(MKSI) is pulling ahead at 9. 6% versus 4. 1% for Sono-Tek Corporation (SOTK). On earnings-per-share growth, the picture is similar: MKS Inc. grew EPS 55. 5% year-over-year, compared to -11. 6% for Sono-Tek Corporation. Over a 3-year CAGR, SOTK leads at 6. 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.

MKS Inc.

(MKSI) is the more profitable company, earning 7. 5% net margin versus 6. 2% for Sono-Tek Corporation — meaning it keeps 7. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: MKSI leads at 14. 4% versus 4. 9% for SOTK. At the gross margin level — before operating expenses — SOTK leads at 47. 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.

In this comparison, MKSI (0.

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

For long-horizon retirement investors, Sono-Tek Corporation (SOTK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

43), +386. 0% 10Y return). MKS Inc. (MKSI) carries a higher beta of 2. 64 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SOTK: +386. 0%, MKSI: +750. 6%), 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.

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.