ANET vs MRK: Which Is the Better Buy?
Side-by-side comparison of Arista Networks, Inc. and Merck & Co., Inc. — fair value, conviction, valuation metrics, and QuantHub research signals.
Updated 2026-09-24.
Arista Networks, Inc. · Technology
$203.47
+15.4% upside to fair value
Med Conviction
Grade C
High Quality
VS
Merck & Co., Inc. · Healthcare
$147.17
-4.1% upside to fair value
Med Conviction
Grade C
QuantHub Verdict
ANET has more upside to fair value
(+15.4%).
These are model outputs — not personalized investment advice.
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Valuation & Fundamentals
| Metric |
ANET |
MRK |
| Current Price |
$203.47 |
$147.17 |
| Fair Value Estimate |
$234.80 |
$141.07 |
| Upside to Fair Value |
+15.4%
|
-4.1%
|
| Market Cap |
$256.2B |
$363.5B |
| Forward P/E |
—
|
—
|
| EV / EBITDA |
49.7x
|
29.6x
|
| Price / Sales |
24.3x
|
5.5x
|
| Price / FCF |
49.7x
|
22.6x
|
| Revenue Growth YoY |
+37.7%
|
+5.1%
|
| Gross Margin |
63.0%
|
75.4%
|
| Operating Margin |
43.1%
|
16.7%
|
| Return on Equity |
30.8%
|
6.6%
|
| Dividend Yield |
0% |
2.31% |
| FCF Yield |
2.01%
|
4.42%
|
| Analyst Consensus |
Strong Buy
|
Buy
|
Investment Thesis
Arista Networks designs and sells high-performance Ethernet switching and routing hardware plus its extensible EOS network operating system, and it sits directly in the path of the AI data-center build-out where networking, not compute, is increasingly the bottleneck. The business quality is genuinely high: TTM gross margin of 63.0%, TTM operating margin of 43.1%, TTM net margin of 38.4%, and ROE…
Merck & Co., Inc. is a global healthcare leader with two core divisions, Pharmaceuticals and Animal Health, spanning oncology, vaccines, acute hospital care, immunology, neuroscience, virology, cardiovascular and diabetes, and it employs roughly 74,000 people under CEO Robert Davis. The business quality is medium: TTM gross margin of 75.4% and TTM operating margin of 16.7% reflect a genuinely hig…
Accumulation Zones
| Metric |
ANET |
MRK |
| Zone Low |
$176.10 |
$105.80 |
| Zone High |
$199.58 |
$119.91 |
| In Buy Zone? |
No
|
No
|