Compare StocksTMO vs UNH

Thermo Fisher Scientific Inc. (TMO) vs UnitedHealth Group Incorporated (UNH)

TMO
Thermo Fisher Scientific Inc.
$470.21
VS
UNH
UnitedHealth Group Incorporated
$280.44

Rewards

TMO
  • Dividend yield of 0.37% with a consistent or growing payout over the past 4 years.
  • Altman Z-Score of 3.85 indicates very low bankruptcy risk — the company is firmly in the safe zone.
UNH
  • 5 insider purchases over the past 12 months with a buy/sell ratio above 3:1 — a sustained pattern of insider confidence.
  • Dividend yield of 3.15% with a consistent or growing payout over the past 4 years.

Risks

TMO
  • Each dollar of retained earnings has produced only $0.17 of market value — shareholders may have been better served by dividends.
  • PEG ratio of 2.85 indicates the stock is expensive relative to its expected growth — the market may be pricing in more growth than analysts project.
  • Insiders have sold $8.2M worth of stock in the past 3 months — significant insider liquidation.
UNH
  • ROIC has declined by 7.9 percentage points over the observed period, which may signal competitive erosion.
  • Gross margin of 18.5% is low, suggesting a competitive or commodity-like market with limited pricing power.
  • FCF yield of 5.4% suggests reasonable valuation assuming continued moderate growth.

Key Valuation Metrics

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TMO
UNH
Valuation
$6.29B
Free Cash Flow
$13.86B
3.60%
FCF Yield
5.45%
26.52
Trailing P/E
21.18
17.49
Forward P/E
14.08
Quality & Moat
7.85%
ROIC
0.64%
12.52%
ROE
11.85%
41.08%
Gross Margin
18.53%
2.85
PEG Ratio
N/A
Balance Sheet Safety
0.77
Debt / Equity
0.82
N/A
Interest Coverage
N/A
2.81
Net Debt / EBITDA
2.54
0.37%
Dividend Yield
3.15%
TMO: 4Ties: 1UNH: 6
TMOUNH

Historical Fundamentals

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TMO

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

UNH

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

Price ÷ Earnings Per Share — how many years of current earnings you're paying for at today's price. Lower P/E may indicate undervaluation.

$1 Retained Earnings Test

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TMO
$0.17
created per $1 retained over 3 years
Value Destroyer
Σ Retained
$17.29B
Δ Market Cap
+$2.95B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer
UNH
$-7.37
created per $1 retained over 3 years
Market Cap Declined
Σ Retained
$26.63B
Δ Market Cap
$-196.16B
Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Buffett's "$1 Test": For every $1 of earnings retained, has management created at least $1 of market value?
> $1 created per $1 retained = Value Creator · < $1 created = Value Destroyer

Discounted Cash Flow (DCF) Analysis

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TMO
34.6% Overvalued
Price is 34.6% above estimated fair value
Current Price: $470.21
Fair Value: $349.42
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
UNH
4.9% Margin of Safety
Price is 4.9% below estimated fair value
Current Price: $280.44
Fair Value: $294.90
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

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TMO

What growth rate is the market pricing in at $470?

+13.6%
Market-Implied Owner Earnings Growth
Standard FCF implies +14.4%

The market implies +13.6% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +14.4%, reflecting heavy growth investment.

UNH

What growth rate is the market pricing in at $280?

+11.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +9.2%

The market implies +11.1% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +9.2%, reflecting heavy growth investment.

Economic Moat Score

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TMO
60/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None

Narrow moat with margin stability as the key competitive advantage. Improving roic consistency would strengthen the moat.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.
UNH
64/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None

Narrow moat with revenue predictability as the key competitive advantage. Improving margin stability would strengthen the moat.

Composite score measuring competitive advantage durability across four dimensions: returns above cost of capital, pricing power stability, revenue predictability, and capital efficiency. Based on 4 years of fundamental data.

Forensic Accounting

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TMO
-2.47
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.
UNH
-2.45
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone

M-Score Trend

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Beneish's 8-variable model estimates the probability of earnings manipulation. An M-Score above -1.78 signals elevated risk — companies in this range have historically been 3-5× more likely to be manipulating earnings. Scores between -2.22 and -1.78 fall in a grey zone warranting further investigation.

Ownership Breakdown

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TMO
Insiders 0.2%Institutions 95.6%Retail & Other 4.3%
No. of Institutional Holders3,620
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.
UNH
Insiders 0.8%Institutions 84.2%Retail & Other 14.9%
No. of Institutional Holders4,244
High insider ownership aligns management incentives with shareholders — a key signal in Buffett-style analysis. Institutional concentration can indicate smart-money conviction but also crowding risk.

High insider ownership aligns management incentives with shareholders. Institutional concentration can indicate smart-money conviction but also crowding risk.

Insider Buying Activity

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TMO
0
Buys (3M)
0
Buys (12M)
CHAI NELSON J
Director
$11,038
@ $551.90 · 2024-12-09
Open market purchases · includes direct & indirect ownership · excludes option exercises
UNH
0
Buys (3M)
5
Buys (12M)
Total value (12M): $31.61M
REX JOHN F
President
$5.00M
@ $291.12 · 2025-05-16
HEMSLEY STEPHEN J
Chief Executive Officer
$25.02M
@ $288.57 · 2025-05-16
GIL KRISTEN
Director
$1.00M
@ $271.17 · 2025-05-15
FLYNN TIMOTHY PATRICK
Director
$491,786
@ $320.80 · 2025-05-14
NOSEWORTHY JOHN H
Director
$93,647
@ $312.16 · 2025-05-14
FLYNN TIMOTHY PATRICK
Director
$511,575
@ $511.57 · 2025-01-17
Open market purchases · includes direct & indirect ownership · excludes option exercises

Open market purchases · includes direct & indirect ownership · excludes option exercises.

Insider Selling Activity

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TMO
4
Sells (3M)
22
Sells (12M)
Total value (12M): $110.68M
SHAFER MICHAEL D
Officer
$802,536
@ $499.40 · 2026-03-11
CASPER MARC N
Chief Executive Officer
$2.06M
@ $514.82 · 2026-03-05
CASPER MARC N
Chief Executive Officer
$5.08M
@ $507.75 · 2026-03-04
PETTITI GIANLUCA
Officer
$216,480
@ $541.20 · 2026-02-09
LAGARDE MICHEL
Chief Operating Officer
$12.42M
@ $563.56 · 2025-12-04
LAGARDE MICHEL
Chief Operating Officer
$36.13M
@ $582.68 · 2025-12-03
LOWERY FREDERICK M.
Officer
$8.15M
@ $589.81 · 2025-12-02
SHAFER MICHAEL D
Officer
$6.43M
@ $600.00 · 2025-11-25
LAGARDE MICHEL
Chief Operating Officer
$2.76M
@ $594.42 · 2025-11-13
BRITT LISA P
Officer
$622,136
@ $588.59 · 2025-11-12
PETTITI GIANLUCA
Officer
$1.73M
@ $580.00 · 2025-11-10
BRITT LISA P
Officer
$5.84M
@ $571.62 · 2025-11-07
CASPER MARC N
Chief Executive Officer
$13.91M
@ $571.33 · 2025-10-27
PETTITI GIANLUCA
Officer
$229,660
@ $574.15 · 2025-10-24
CASPER MARC N
Chief Executive Officer
$200,201
@ $500.50 · 2025-09-05
HOLMES JOSEPH R.
Officer
$189,662
@ $492.63 · 2025-08-29
CASPER MARC N
Chief Executive Officer
$5.01M
@ $500.96 · 2025-08-22
CASPER MARC N
Chief Executive Officer
$248,046
@ $500.09 · 2025-08-20
CASPER MARC N
Chief Executive Officer
$8.15M
@ $452.99 · 2025-08-07
PETTITI GIANLUCA
Officer
$191,992
@ $479.98 · 2025-07-25
PETTITI GIANLUCA
Officer
$164,444
@ $411.11 · 2025-05-12
PETTITI GIANLUCA
Officer
$128,979
@ $429.93 · 2025-04-28
BOXER MICHAEL A
General Counsel
$2.01M
@ $532.59 · 2025-03-10
CASPER MARC N
Chief Executive Officer
$9.33M
@ $518.16 · 2025-03-05
SHAFER MICHAEL D
Officer
$945,038
@ $530.92 · 2025-03-03
LOWERY FREDERICK M.
Officer
$9.73M
@ $531.81 · 2025-02-24
CHAI NELSON J
Director
$8,449
@ $528.06 · 2025-02-19
PETTITI GIANLUCA
Officer
$175,677
@ $585.59 · 2025-02-04
WILLIAMSON STEPHEN
Chief Financial Officer
$11.58M
@ $589.36 · 2025-02-04
CASPER MARC N
Chief Executive Officer
$10.62M
@ $531.23 · 2024-12-03
CASPER MARC N
Chief Executive Officer
$3.26M
@ $557.89 · 2024-11-01
CASPER MARC N
Chief Executive Officer
$11.01M
@ $550.51 · 2024-10-31
CASPER MARC N
Chief Executive Officer
$11.05M
@ $552.46 · 2024-10-29
BOXER MICHAEL A
General Counsel
$1.12M
@ $560.16 · 2024-10-25
PETTITI GIANLUCA
Officer
$168,048
@ $560.16 · 2024-10-25
CASPER MARC N
Chief Executive Officer
$12.17M
@ $608.45 · 2024-09-04
CASPER MARC N
Chief Executive Officer
$6.17M
@ $617.21 · 2024-07-31
CASPER MARC N
Chief Executive Officer
$9.88M
@ $606.12 · 2024-07-30
HOLMES JOSEPH R.
Officer
$525,484
@ $611.03 · 2024-07-26
BRITT LISA P
Officer
$2.22M
@ $613.02 · 2024-07-26
BOXER MICHAEL A
General Counsel
$1.20M
@ $600.85 · 2024-07-26
PETTITI GIANLUCA
Officer
$180,255
@ $600.85 · 2024-07-26
CASPER MARC N
Chief Executive Officer
$11.37M
@ $568.72 · 2024-06-04
LAGARDE MICHEL
Chief Operating Officer
$11.80M
@ $590.05 · 2024-05-14
WILLIAMSON STEPHEN
Chief Financial Officer
$12.96M
@ $591.27 · 2024-05-13
CASPER MARC N
Chief Executive Officer
$5.74M
@ $573.74 · 2024-05-01
CASPER MARC N
Chief Executive Officer
$11.48M
@ $574.18 · 2024-04-30
BOXER MICHAEL A
General Counsel
$1.14M
@ $567.94 · 2024-04-26
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
UNH
0
Sells (3M)
1
Sells (12M)
Total value (12M): $179,645
CONWAY PATRICK HUGH M.D.
Chief Executive Officer
$179,645
@ $305.00 · 2025-06-10
MCSWEENEY ERIN L
Officer
$438,987
@ $626.23 · 2024-11-11
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives

Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives.

🎭 Mr. Market's Mood

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TMO
FearGreed
😨Fear(40/100)

"Market is pessimistic — investigate whether fears are temporary or structural"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.
UNH
FearGreed
😨Fear(37/100)

"Market is pessimistic — investigate whether fears are temporary or structural"

Composite sentiment score based on 6 market signals. Inspired by Buffett's "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

Composite sentiment score based on market signals. Inspired by Buffett’s "Mr. Market" allegory — fear = potential opportunity, greed = potential risk. Must be used alongside fundamental analysis, not in isolation.

⚖️ Buffett Signal

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TMO
Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Fear (40)
UNH
Awaiting DCF Data

The Buffett Signal cross-references market sentiment with DCF valuation. Configure the DCF Analysis above to generate a signal.

DCF Margin of Safety: N/AMr. Market's Mood: Fear (37)
View TMO Full AnalysisView UNH Full Analysis
Thermo Fisher Scientific Inc. (TMO) vs UnitedHealth Group Incorporated (UNH) Stock Comparison | SafetyMargin.io