MLAB vs TMO

For growth investors, Mesa Laboratories, Inc.

(MLAB) is the stronger pick with 11. 5% revenue growth year-over-year, versus 3. 9% for Thermo Fisher Scientific Inc. (TMO). Thermo Fisher Scientific Inc. (TMO) offers the better valuation at 26. 7x trailing P/E (19. 0x forward), making it the more compelling value choice. Analysts rate Thermo Fisher Scientific Inc. (TMO) a "Buy" — based on 42 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 forward P/E, Mesa Laboratories, Inc.

is actually cheaper at 11. 7x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Thermo Fisher Scientific Inc.

(TMO) delivered a total return of +2. 1%, compared to -56. 4% for Mesa Laboratories, Inc. (MLAB). Over 10 years, the gap is even starker: TMO returned +229. 1% versus MLAB's +5. 5%. 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), Thermo Fisher Scientific Inc.

(TMO) is the lower-risk stock at 1. 10β versus Mesa Laboratories, Inc. 's 1. 78β — meaning MLAB is approximately 63% more volatile than TMO relative to the S&P 500. On balance sheet safety, Thermo Fisher Scientific Inc. (TMO) carries a lower debt/equity ratio of 76% versus 114% for Mesa Laboratories, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Mesa Laboratories, Inc.

(MLAB) is pulling ahead at 11. 5% versus 3. 9% for Thermo Fisher Scientific Inc. (TMO). On earnings-per-share growth, the picture is similar: Mesa Laboratories, Inc. grew EPS 99. 2% year-over-year, compared to 7. 3% for Thermo Fisher Scientific Inc.. Over a 3-year CAGR, MLAB leads at 9. 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.

Thermo Fisher Scientific Inc.

(TMO) is the more profitable company, earning 15. 1% net margin versus -0. 8% for Mesa Laboratories, Inc. — meaning it keeps 15. 1% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: TMO leads at 18. 2% versus 6. 8% for MLAB. At the gross margin level — before operating expenses — MLAB leads at 62. 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.

On forward earnings alone, Mesa Laboratories, Inc.

(MLAB) trades at 11. 7x forward P/E versus 19. 0x for Thermo Fisher Scientific Inc. — 7. 4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for TMO: 38. 4% to $654. 67.

All stocks in this comparison pay dividends.

Mesa Laboratories, Inc. (MLAB) offers the highest yield at 0. 6%, versus 0. 4% for Thermo Fisher Scientific Inc. (TMO).

For long-horizon retirement investors, Thermo Fisher Scientific Inc.

(TMO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1. 10), +229. 1% 10Y return). Mesa Laboratories, Inc. (MLAB) carries a higher beta of 1. 78 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (TMO: +229. 1%, MLAB: +5. 5%), 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 (MLAB (Technology) and TMO (Healthcare)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

MLAB pays a dividend while TMO does 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.