MRK vs TMO: Which Is the Better Buy?
Side-by-side comparison of Merck & Co., Inc. and Thermo Fisher Scientific Inc. — fair value, conviction, valuation metrics, and QuantHub research signals.
Updated 2026-06-20.
Merck & Co., Inc. · Healthcare
$113.87
-12.1% upside to fair value
Grade D
High Quality
VS
Thermo Fisher Scientific Inc. · Healthcare
$464.61
+7.2% upside to fair value
Grade A
High Quality
QuantHub Verdict
TMO has more upside to fair value
(+7.2%).
TMO trades at a lower forward P/E
(25.2x).
These are model outputs — not personalized investment advice.
See all research →
Valuation & Fundamentals
| Metric |
MRK |
TMO |
| Current Price |
$113.87 |
$464.61 |
| Fair Value Estimate |
$100.14 |
$498.27 |
| Upside to Fair Value |
-12.1%
|
+7.2%
|
| Market Cap |
$281.2B |
$172.7B |
| Forward P/E |
32.0x
|
25.2x
|
| EV / EBITDA |
17.3x
|
19.1x
|
| Price / Sales |
4.3x
|
3.8x
|
| Price / FCF |
19.9x
|
25.6x
|
| Revenue Growth YoY |
+4.3%
|
+6.2%
|
| Gross Margin |
75.9%
|
39.4%
|
| Operating Margin |
27.6%
|
17.8%
|
| Return on Equity |
17.9%
|
13.3%
|
| Dividend Yield |
0% |
0% |
| FCF Yield |
5.02%
|
3.91%
|
| Analyst Consensus |
Hold
|
Strong Buy
|
Investment Thesis
Merck & Co., Inc. is a leading global healthcare company specializing in pharmaceuticals, vaccines, and animal health products. Its business quality is high, supported by a durable competitive moat anchored in the dominant global position of Keytruda in PD-1/PD-L1 oncology, a strong vaccines portfolio including Gardasil, and scale in R&D and manufacturing. The company benefits from a seasoned lea…
Thermo Fisher Scientific is a leading healthcare company specializing in life science tools, diagnostics, and contract research and manufacturing services. It operates with a broad, multi-layered moat driven by scale, integration, and a long-tenured management team. The company exhibits solid fundamentals with a 13.3% ROE, 6.2% revenue growth, and 9.6% earnings growth in the most recent quarter. …
Accumulation Zones
| Metric |
MRK |
TMO |
| Zone Low |
$75.11 |
$373.70 |
| Zone High |
$85.12 |
$423.53 |
| In Buy Zone? |
No
|
No
|