PLAB vs MKSI vs ENTG vs ONTO vs ICHR

For growth investors, Ichor Holdings, Ltd.

(ICHR) is the stronger pick with 11. 6% revenue growth year-over-year, versus -2. 0% for Photronics, Inc. (PLAB). Photronics, Inc. (PLAB) offers the better valuation at 23. 5x trailing P/E (23. 8x forward), making it the more compelling value choice. Analysts rate Photronics, Inc. (PLAB) a "Buy" — based on 11 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, Photronics, Inc.

(PLAB) is the cheapest at 23. 5x versus Onto Innovation Inc. at 102. 4x. On forward P/E, Photronics, Inc. is actually cheaper at 23. 8x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Photronics, Inc. wins at 0. 69x versus Onto Innovation Inc. 's 1. 16x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Onto Innovation Inc.

(ONTO) delivered a total return of +360. 4%, compared to +39. 6% for Entegris, Inc. (ENTG). Over 10 years, the gap is even starker: ONTO returned +1491% versus PLAB's +422. 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), MKS Inc.

(MKSI) is the lower-risk stock at 2. 56β versus Ichor Holdings, Ltd. 's 3. 78β — meaning ICHR is approximately 48% more volatile than MKSI relative to the S&P 500. On balance sheet safety, Photronics, Inc. (PLAB) carries a lower debt/equity ratio of 0% versus 173% for MKS Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Ichor Holdings, Ltd.

(ICHR) is pulling ahead at 11. 6% versus -2. 0% for Photronics, Inc. (PLAB). On earnings-per-share growth, the picture is similar: MKS Inc. grew EPS 55. 5% year-over-year, compared to -140. 6% for Ichor Holdings, Ltd.. Over a 3-year CAGR, MKSI leads at 3. 5% 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.

Photronics, Inc.

(PLAB) is the more profitable company, earning 16. 1% net margin versus -5. 6% for Ichor Holdings, Ltd. — meaning it keeps 16. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ENTG leads at 28. 9% versus -4. 1% for ICHR. At the gross margin level — before operating expenses — ONTO leads at 49. 7%, 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, Photronics, Inc. (PLAB) is the more undervalued stock at a PEG of 0. 69x versus Onto Innovation Inc. 's 1. 16x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Photronics, Inc. (PLAB) trades at 23. 8x forward P/E versus 54. 0x for Ichor Holdings, Ltd. — 30. 2x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for ONTO: 16. 5% to $331. 67.

In this comparison, MKSI (0.

3% yield), ENTG (0. 3% yield) pay a dividend. PLAB, ONTO, ICHR 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 (+1491% 10Y return). Photronics, Inc. (PLAB) carries a higher beta of 2. 90 — 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: +1491%, PLAB: +422. 0%), 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.