TMO vs UNH: Which Is the Better Buy?

Side-by-side comparison of Thermo Fisher Scientific Inc. and UnitedHealth Group Incorporated โ€” fair value, conviction, valuation metrics, and QuantHub research signals. Updated 2026-07-17.
Thermo Fisher Scientific Inc. ยท Healthcare
$464.61
+7.2% upside to fair value
Grade A High Quality
VS
UnitedHealth Group Incorporated ยท Healthcare
$423.38
+45.0% upside to fair value
Grade B High Quality
QuantHub Verdict
UNH has more upside to fair value (+45.0%). TMO trades at a lower forward P/E (25.2x). These are model outputs โ€” not personalized investment advice. See all research โ†’
Valuation & Fundamentals
Metric TMO UNH
Current Price $464.61 $423.38
Fair Value Estimate $498.27 $613.90
Upside to Fair Value +7.2% +45.0%
Market Cap $172.7B $384.5B
Forward P/E 25.2x 27.2x
EV / EBITDA 19.1x 13.8x
Price / Sales 3.8x 0.8x
Price / FCF 25.6x 19.6x
Revenue Growth YoY +6.2% +0.4%
Gross Margin 39.4% 18.8%
Operating Margin 17.8% 4.2%
Return on Equity 13.3% 12.4%
Dividend Yield 0% 0%
FCF Yield 3.91% 5.12%
Analyst Consensus Strong Buy Strong Buy
Investment Thesis
TMO โ€” Thermo Fisher Scientific Inc.
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. โ€ฆ
UNH โ€” UnitedHealth Group Incorporated
UnitedHealth Group Incorporated operates in the healthcare sector, specifically within medical and healthcare plans, providing a durable business model supported by a strong competitive moat and consistent earnings growth. The company currently trades at a price of $423.38 with a market cap of $359.873 billion, reflecting a valuation that is cheap relative to its five-year history, supported by aโ€ฆ
Accumulation Zones
Metric TMO UNH
Zone Low $373.70 $460.42
Zone High $423.53 $521.81
In Buy Zone? No Yes
โ† TMO Research    UNH Research โ†’    All Research