ANET vs TMO: Which Is the Better Buy?
Side-by-side comparison of Arista Networks, Inc. and Thermo Fisher Scientific 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
Thermo Fisher Scientific Inc. · Healthcare
$658.32
+31.1% upside to fair value
Med Conviction
Grade B
High Quality
QuantHub Verdict
TMO has more upside to fair value
(+31.1%).
These are model outputs — not personalized investment advice.
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Valuation & Fundamentals
| Metric |
ANET |
TMO |
| Current Price |
$203.47 |
$658.32 |
| Fair Value Estimate |
$234.80 |
$863.34 |
| Upside to Fair Value |
+15.4%
|
+31.1%
|
| Market Cap |
$256.2B |
$244.7B |
| Forward P/E |
—
|
—
|
| EV / EBITDA |
49.7x
|
25.9x
|
| Price / Sales |
24.3x
|
5.3x
|
| Price / FCF |
49.7x
|
33.4x
|
| Revenue Growth YoY |
+37.7%
|
+10.5%
|
| Gross Margin |
63.0%
|
40.4%
|
| Operating Margin |
43.1%
|
17.7%
|
| Return on Equity |
30.8%
|
13.4%
|
| Dividend Yield |
0% |
0.28% |
| FCF Yield |
2.01%
|
3.0%
|
| Analyst Consensus |
Strong Buy
|
Strong 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…
Thermo Fisher Scientific is a global life-sciences and laboratory-services platform spanning Life Sciences Solutions, Analytical Instruments, Specialty Diagnostics, and Laboratory Products and Biopharma Services, with recognized brands including Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific, Patheon, and PPD, serving pharmaceutical, biotech, clinical, academic, and governme…
Accumulation Zones
| Metric |
ANET |
TMO |
| Zone Low |
$176.10 |
$647.50 |
| Zone High |
$199.58 |
$733.84 |
| In Buy Zone? |
No
|
Yes
|