NVMI vs COHU vs ONTO vs MKSI

For growth investors, Nova Ltd.

(NVMI) is the stronger pick with 29. 8% revenue growth year-over-year, versus 1. 8% for Onto Innovation Inc. (ONTO). MKS Inc. (MKSI) offers the better valuation at 68. 8x trailing P/E (30. 4x forward), making it the more compelling value choice. Analysts rate Nova Ltd. (NVMI) a "Buy" — based on 12 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, MKS Inc.

(MKSI) is the cheapest at 68. 8x versus Onto Innovation Inc. at 98. 6x. On forward P/E, MKS Inc. is actually cheaper at 30. 4x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Onto Innovation Inc. wins at 1. 12x versus Nova Ltd. 's 1. 35x — a reasonable growth-adjusted valuation.

Over the past 5 years, Nova Ltd.

(NVMI) delivered a total return of +443. 3%, compared to +22. 2% for Cohu, Inc. (COHU). Over 10 years, the gap is even starker: NVMI returned +43. 2% versus COHU's +330. 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), Cohu, Inc.

(COHU) is the lower-risk stock at 2. 13β versus Onto Innovation Inc. 's 2. 66β — meaning ONTO is approximately 25% more volatile than COHU relative to the S&P 500. On balance sheet safety, Onto Innovation Inc. (ONTO) carries a lower debt/equity ratio of 1% versus 173% for MKS Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Nova Ltd.

(NVMI) is pulling ahead at 29. 8% versus 1. 8% for Onto Innovation Inc. (ONTO). On earnings-per-share growth, the picture is similar: MKS Inc. grew EPS 55. 5% year-over-year, compared to -31. 5% for Onto Innovation Inc.. Over a 3-year CAGR, NVMI leads at 17. 3% 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.

Nova Ltd.

(NVMI) is the more profitable company, earning 27. 3% net margin versus -16. 4% for Cohu, Inc. — meaning it keeps 27. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: NVMI leads at 27. 9% versus -13. 3% for COHU. At the gross margin level — before operating expenses — NVMI leads at 57. 6%, 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, Onto Innovation Inc. (ONTO) is the more undervalued stock at a PEG of 1. 12x versus Nova Ltd. 's 1. 35x. A PEG below 1. 5 suggests fair-to-attractive pricing relative to expected growth. On forward earnings alone, MKS Inc. (MKSI) trades at 30. 4x forward P/E versus 89. 2x for Cohu, Inc. — 58. 9x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ONTO: 12. 5% to $308. 33.

In this comparison, MKSI (0.

3% yield) pays a dividend. NVMI, COHU, ONTO do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Onto Innovation Inc.

(ONTO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1432% 10Y return). Nova Ltd. (NVMI) carries a higher beta of 2. 37 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (ONTO: +1432%, NVMI: +43. 2%), 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: NVMI is a mid-cap high-growth stock; COHU is a small-cap quality compounder stock; ONTO is a mid-cap quality compounder stock; MKSI is a mid-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.