Is MRK or TMO cheaper?

On trailing earnings, TMO is cheaper: MRK trades at a 32.52 P/E and TMO at 25.38.

Which has grown faster, MRK or TMO?

Over the past five years, MRK grew revenue faster — MRK at a 8.60% CAGR versus TMO at 6.68%.

Does MRK or TMO pay a bigger dividend?

MRK yields 2.91% and TMO yields 0.39% based on trailing dividends and the latest price.

Is MRK or TMO more profitable?

TMO runs the higher net margin — MRK at 13.62% versus TMO at 15.18%.

Which has been the better investment, MRK or TMO?

Over the past 10-year, TMO delivered the higher annualized total return — MRK at 11.40% versus TMO at 12.51%. Past performance doesn't predict future results.

Merck & Co., Inc. (MRK) vs Thermo Fisher Scientific Inc. (TMO)

MRK leads on 13 of 17 compared metrics, though TMO is the cheaper stock.

A side-by-side comparison of Merck & Co., Inc. and Thermo Fisher Scientific Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of June 18, 2026. The ● marks the stronger figure on each row (cheaper multiple, higher margin/return).

Thermo Fisher Scientific Inc.

$171.57B

$461.69Healthcare

Total return — MRK vs TMO

growth of $100 · last 30y

MRK +281.4%TMO +1205.7%TMO compounded faster

MRK TMO

MRK vs TMO: by the numbers

•MRK is the larger company ($285.24B vs $171.57B market cap).
•TMO trades at the lower earnings multiple (25.38 vs 32.52 P/E).
•TMO converts more revenue to profit (15.18% vs 13.62% net margin).
•MRK grew revenue faster over the past five years (8.60% vs 6.68% CAGR).
•MRK pays the higher dividend yield (2.91% vs 0.39%).

Which is better, MRK or TMO?

Metric tally: MRK 13 · TMO 4

It depends on what you're optimizing for:

ValueTMO(lower P/E)

GrowthMRK(faster 5Y revenue CAGR)

IncomeMRK(higher dividend yield)

QualityMRK(higher ROIC)

Metrics side by side

Valuation

Metric	MRK	TMO
P/E ratio	32.52	25.38●
Forward P/E	11.97●	16.98
P/S ratio	4.35	3.81●
P/B ratio	6.22	3.32●
PEG ratio	1.81●	4.51
EV / EBITDA	17.53●	19.01
FCF yield	4.95%●	3.92%

Profitability

Metric	MRK	TMO
Gross margin	75.91%●	39.41%
Operating margin	27.59%●	17.76%
Net margin	13.62%	15.18%●
ROE	19.48%●	13.21%
ROIC	18.27%●	7.58%

Dividends

Metric	MRK	TMO
Dividend yield	2.91%●	0.39%
Payout ratio	46.03%	10.13%

Growth (annualized)

Metric	MRK	TMO
Revenue CAGR (5Y)	8.60%●	6.68%
EPS CAGR (5Y)	21.21%●	1.99%
FCF CAGR (5Y)	15.69%●	-0.19%
Total return CAGR (5Y)	11.80%●	-0.75%

Frequently asked

Which is better, MRK or TMO?: It depends on your goal. value: TMO (lower P/E); growth: MRK (faster 5Y revenue CAGR); income: MRK (higher dividend yield); quality: MRK (higher ROIC). Across all compared metrics, MRK leads 13 to 4.
Is MRK or TMO cheaper?: On trailing earnings, TMO is cheaper: MRK trades at a 32.52 P/E and TMO at 25.38.
Which has grown faster, MRK or TMO?: Over the past five years, MRK grew revenue faster — MRK at a 8.60% CAGR versus TMO at 6.68%.
Does MRK or TMO pay a bigger dividend?: MRK yields 2.91% and TMO yields 0.39% based on trailing dividends and the latest price.
Is MRK or TMO more profitable?: TMO runs the higher net margin — MRK at 13.62% versus TMO at 15.18%.
Which has been the better investment, MRK or TMO?: Over the past 10-year, TMO delivered the higher annualized total return — MRK at 11.40% versus TMO at 12.51%. Past performance doesn't predict future results.

Go deeper

Full MRK analysis Full TMO analysis Interactive comparison tool

Dig into the metrics

Merck & P/E ratio Thermo Fisher Scientific P/E ratio Merck & dividend yield Thermo Fisher Scientific dividend yield Merck & ROE Thermo Fisher Scientific ROE Merck & operating margin Thermo Fisher Scientific operating margin Merck & revenue growth Thermo Fisher Scientific revenue growth Merck & free cash flow Thermo Fisher Scientific free cash flow

Merck & & Thermo Fisher Scientific appear in these rankings

Highest Dividend Yield Stocks Highest ROIC Stocks Highest FCF Yield Stocks Largest Companies by Market Cap

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified June 18, 2026.