OPTX vs LIQT vs COHR vs POWI vs LITE

For growth investors, Coherent, Inc.

(COHR) is the stronger pick with 23. 4% revenue growth year-over-year, versus -3. 4% for Syntec Optics Holdings, Inc. (OPTX). Power Integrations, Inc. (POWI) offers the better valuation at 187. 9x trailing P/E (58. 7x forward), making it the more compelling value choice. Analysts rate Coherent, Inc. (COHR) a "Buy" — based on 30 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, Power Integrations, Inc.

(POWI) is the cheapest at 187. 9x versus Lumentum Holdings Inc. at 2441. 7x. On forward P/E, Power Integrations, Inc. is actually cheaper at 58. 7x.

Over the past 5 years, Lumentum Holdings Inc.

(LITE) delivered a total return of +1019%, compared to -96. 1% for LiqTech International, Inc. (LIQT). Over 10 years, the gap is even starker: LITE returned +36. 8% versus LIQT's -91. 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), LiqTech International, Inc.

(LIQT) is the lower-risk stock at 0. 54β versus Syntec Optics Holdings, Inc. 's 3. 11β — meaning OPTX is approximately 478% more volatile than LIQT relative to the S&P 500. On balance sheet safety, Coherent, Inc. (COHR) carries a lower debt/equity ratio of 46% versus 2% for Lumentum Holdings Inc. — giving it more financial flexibility in a downturn.

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

(COHR) is pulling ahead at 23. 4% versus -3. 4% for Syntec Optics Holdings, Inc. (OPTX). On earnings-per-share growth, the picture is similar: Lumentum Holdings Inc. grew EPS 104. 6% year-over-year, compared to -210. 6% for Syntec Optics Holdings, Inc.. Over a 3-year CAGR, COHR leads at 20. 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.

Power Integrations, Inc.

(POWI) is the more profitable company, earning 5. 0% net margin versus -51. 7% for LiqTech International, Inc. — meaning it keeps 5. 0% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: COHR leads at 9. 4% versus -50. 3% for LIQT. At the gross margin level — before operating expenses — POWI leads at 54. 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.

On forward earnings alone, Power Integrations, Inc.

(POWI) trades at 58. 7x forward P/E versus 110. 1x for Lumentum Holdings Inc. — 51. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for POWI: 7. 8% to $79. 00.

In this comparison, POWI (1.

1% yield) pays a dividend. OPTX, LIQT, COHR, LITE do not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, LiqTech International, Inc.

(LIQT) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 54)). Syntec Optics Holdings, Inc. (OPTX) carries a higher beta of 3. 11 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (LIQT: -91. 0%, OPTX: -25. 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.

These companies operate in different sectors (OPTX (Technology) and LIQT (Industrials) and COHR (Technology) and POWI (Technology) and LITE (Technology)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: OPTX is a small-cap quality compounder stock; LIQT is a small-cap quality compounder stock; COHR is a mid-cap high-growth stock; POWI is a small-cap quality compounder stock; LITE is a mid-cap high-growth stock. POWI pays a dividend while OPTX, LIQT, COHR, LITE 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.