LASR vs COHR vs LITE vs VIAV vs IPGP

For growth investors, nLIGHT, Inc.

(LASR) is the stronger pick with 31. 6% revenue growth year-over-year, versus 2. 7% for IPG Photonics Corporation (IPGP). IPG Photonics Corporation (IPGP) offers the better valuation at 139. 2x trailing P/E (62. 6x forward), making it the more compelling value choice. Analysts rate nLIGHT, Inc. (LASR) a "Buy" — based on 13 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, IPG Photonics Corporation (IPGP) is the cheapest at 139.

2x versus Lumentum Holdings Inc. at 2412. 9x. On forward P/E, Viavi Solutions Inc. is actually cheaper at 55. 2x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Lumentum Holdings Inc.

(LITE) delivered a total return of +976. 6%, compared to -48. 5% for IPG Photonics Corporation (IPGP). Over 10 years, the gap is even starker: LITE returned +36. 4% versus IPGP's +20. 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), Viavi Solutions Inc.

(VIAV) is the lower-risk stock at 1. 54β versus nLIGHT, Inc. 's 2. 86β — meaning LASR is approximately 86% more volatile than VIAV relative to the S&P 500. On balance sheet safety, nLIGHT, Inc. (LASR) carries a lower debt/equity ratio of 16% versus 2% for Lumentum Holdings Inc. — giving it more financial flexibility in a downturn.

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

(LASR) is pulling ahead at 31. 6% versus 2. 7% for IPG Photonics Corporation (IPGP). On earnings-per-share growth, the picture is similar: Viavi Solutions Inc. grew EPS 225. 0% year-over-year, compared to 62. 2% for nLIGHT, 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.

Viavi Solutions Inc.

(VIAV) is the more profitable company, earning 3. 2% net margin versus -9. 0% for nLIGHT, Inc. — meaning it keeps 3. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: COHR leads at 9. 4% versus -10. 9% for LITE. At the gross margin level — before operating expenses — VIAV leads at 56. 8%, 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, Viavi Solutions Inc.

(VIAV) trades at 55. 2x forward P/E versus 207. 6x for nLIGHT, Inc. — 152. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for IPGP: 49. 2% to $151. 67.

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, Coherent, Inc.

(COHR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+1467% 10Y return). Lumentum Holdings Inc. (LITE) carries a higher beta of 2. 69 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (COHR: +1467%, LITE: +36. 4%), 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: LASR is a small-cap high-growth stock; COHR is a mid-cap high-growth stock; LITE is a mid-cap high-growth stock; VIAV is a mid-cap quality compounder stock; IPGP is a small-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.