Compare StocksBRK-B vs MCK

Berkshire Hathaway Inc. (BRK-B) vs McKesson Corporation (MCK)

BRK-B
Berkshire Hathaway Inc.
$478.29
VS
MCK
McKesson Corporation
$811.03

Rewards

BRK-B
  • Each dollar of retained earnings has created $3.95 of earning power — management is an exceptional capital allocator.
  • PEG ratio of 0.13 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings growth.
  • Net debt/EBITDA of -2.3x means the company holds more cash than debt — a net cash position.
MCK
  • McKesson Corporation has maintained ROIC above 15% for 4 consecutive years, indicating a durable competitive advantage.
  • McKesson Corporation scores 82/100 on the Economic Moat Score (Wide Moat), with roic consistency as the strongest competitive dimension.
  • Free cash flow has grown at a 10.3% CAGR over the past 4 years, demonstrating strong earnings power growth.

Risks

BRK-B
  • FCF yield of 5.9% suggests reasonable valuation assuming continued moderate growth.
  • Trailing P/E of 15.4x is 74% above the historical average of 8.9x — the stock trades at a premium to its own history.
MCK
  • Gross margin of 3.5% is low, suggesting a competitive or commodity-like market with limited pricing power.
  • 5 insider sales totaling $3.8M with no purchases in the past 3 months — insiders are reducing their exposure.

Key Valuation Metrics

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BRK-B
MCK
Valuation
$61.23B
Free Cash Flow
$9.16B
5.94%
FCF Yield
9.22%
15.41
Trailing P/E
23.39
22.19
Forward P/E
18.39
Quality & Moat
4.96%
ROIC
55.61%
9.18%
ROE
N/A
27.78%
Gross Margin
3.45%
0.13
PEG Ratio
0.62
Balance Sheet Safety
0.18
Debt / Equity
N/A
N/A
Interest Coverage
N/A
-2.28
Net Debt / EBITDA
0.97
N/A
Dividend Yield
0.40%
BRK-B: 5Ties: 1MCK: 3
BRK-BMCK

Historical Fundamentals

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BRK-B

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

MCK

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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BRK-B
$1.66
created per $1 retained over 3 years
Value Creator
Σ Retained
$252.19B
Δ Market Cap
+$417.89B
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
MCK
$5.41
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$8.91B
Δ Market Cap
+$48.14B
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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BRK-B
30.2% Margin of Safety
Price is 30.2% below estimated fair value
Current Price: $478.29
Fair Value: $685.41
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
MCK
9.5% Overvalued
Price is 9.5% above estimated fair value
Current Price: $811.03
Fair Value: $740.41
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

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BRK-B

What growth rate is the market pricing in at $478?

-0.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +1.2%

The market implies -0.0% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +1.2%, reflecting heavy growth investment.

MCK

What growth rate is the market pricing in at $811?

+14.1%
Market-Implied Owner Earnings Growth
Standard FCF implies +0.1%

The market implies +14.1% Owner Earnings growth, below historical trends — potential opportunity.

Standard FCF implies a more demanding +0.1%, reflecting heavy growth investment expected to generate future returns.

Economic Moat Score

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BRK-B
40/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None

Narrow moat with reinvestment efficiency as the key competitive advantage. Improving revenue predictability 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 5 years of fundamental data.
MCK
82/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None

Wide moat driven primarily by roic consistency. Margin Stability is the area most vulnerable to competitive pressure.

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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BRK-B
-2.41
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.
MCK
-2.43
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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BRK-B
Insiders 0.3%Institutions 66.2%Retail & Other 33.6%
No. of Institutional Holders5,818
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.
MCK
Insiders 0.1%Institutions 91.7%Retail & Other 8.2%
No. of Institutional Holders2,651
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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BRK-B
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
MCK
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
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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BRK-B
0
Sells (3M)
0
Sells (12M)
No open market insider sales found.
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
MCK
5
Sells (3M)
23
Sells (12M)
Total value (12M): $59.73M
LAU MICHELE
Officer
$2.70M
@ $990.00 · 2026-03-02
MARTINEZ MARIA N.
Director
$328,013
@ $939.87 · 2026-02-19
SMITH LEANN B
Officer
$179,550
@ $945.00 · 2026-02-17
LAU MICHELE
Officer
$282,817
@ $933.39 · 2026-02-11
RUTLEDGE NAPOLEON B JR
Officer
$313,240
@ $955.00 · 2026-02-06
RODGERS THOMAS L
Officer
$225,266
@ $816.18 · 2026-01-05
RUTLEDGE NAPOLEON B JR
Officer
$283,476
@ $861.63 · 2025-11-07
TYLER BRIAN SCOTT
Chief Executive Officer
$8.42M
@ $705.63 · 2025-08-22
TYLER BRIAN SCOTT
Chief Executive Officer
$8.09M
@ $677.76 · 2025-08-15
RUTLEDGE NAPOLEON B JR
Officer
$218,347
@ $663.67 · 2025-08-08
TYLER BRIAN SCOTT
Chief Executive Officer
$13.72M
@ $708.09 · 2025-07-11
TYLER BRIAN SCOTT
Chief Executive Officer
$13.67M
@ $705.93 · 2025-06-06
RODGERS THOMAS L
Officer
$2.06M
@ $712.18 · 2025-05-30
VITALONE BRITT J
Chief Financial Officer
$1.35M
@ $717.91 · 2025-05-28
RODGERS THOMAS L
Officer
$366,134
@ $717.91 · 2025-05-28
RUTLEDGE NAPOLEON B JR
Officer
$68,201
@ $717.91 · 2025-05-28
SMITH LEANN B
Officer
$244,807
@ $717.91 · 2025-05-28
RUTLEDGE NAPOLEON B JR
Officer
$749,360
@ $714.36 · 2025-05-27
VITALONE BRITT J
Chief Financial Officer
$523,556
@ $715.24 · 2025-05-23
SMITH LEANN B
Officer
$115,154
@ $715.24 · 2025-05-23
VITALONE BRITT J
Chief Financial Officer
$4.54M
@ $717.30 · 2025-05-22
SMITH LEANN B
Officer
$895,190
@ $717.30 · 2025-05-22
RUTLEDGE NAPOLEON B JR
Officer
$394,495
@ $726.51 · 2025-05-19
TYLER BRIAN SCOTT
Chief Executive Officer
$5.68M
@ $634.24 · 2025-03-06
TYLER BRIAN SCOTT
Chief Executive Officer
$5.59M
@ $624.00 · 2025-02-28
LAU MICHELE
Officer
$188,760
@ $605.00 · 2025-02-25
TYLER BRIAN SCOTT
Chief Executive Officer
$5.36M
@ $597.99 · 2025-02-21
TYLER BRIAN SCOTT
Chief Executive Officer
$5.38M
@ $600.66 · 2025-02-14
SMITH LEANN B
Officer
$114,603
@ $609.59 · 2025-02-12
SMITH LEANN B
Officer
$331,645
@ $572.79 · 2025-01-02
SMITH LEANN B
Officer
$349,027
@ $602.81 · 2024-12-09
TYLER BRIAN SCOTT
Chief Executive Officer
$2.11M
@ $561.10 · 2024-09-05
TYLER BRIAN SCOTT
Chief Executive Officer
$2.35M
@ $626.03 · 2024-08-05
TYLER BRIAN SCOTT
Chief Executive Officer
$2.18M
@ $580.92 · 2024-07-03
SMITH LEANN B
Officer
$351,318
@ $585.53 · 2024-06-11
MARTINEZ MARIA N.
Director
$282,979
@ $585.88 · 2024-06-07
TYLER BRIAN SCOTT
Chief Executive Officer
$2.16M
@ $574.41 · 2024-06-05
RODGERS THOMAS L
Officer
$2.94M
@ $560.99 · 2024-05-31
VITALONE BRITT J
Chief Financial Officer
$1.83M
@ $551.99 · 2024-05-29
RODGERS THOMAS L
Officer
$512,939
@ $556.33 · 2024-05-29
SMITH LEANN B
Officer
$225,924
@ $553.74 · 2024-05-29
VITALONE BRITT J
Chief Financial Officer
$7.12M
@ $558.09 · 2024-05-23
SMITH LEANN B
Officer
$392,895
@ $558.09 · 2024-05-23
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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BRK-B
FearGreed
😐Neutral(57/100)

"Market is pricing this stock without strong emotion in either direction"

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.
MCK
FearGreed
😐Neutral(45/100)

"Market is pricing this stock without strong emotion in either direction"

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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BRK-B
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: Neutral (57)
MCK
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: Neutral (45)
View BRK-B Full AnalysisView MCK Full Analysis
BRK-B vs MCK: Which Is the Better Buy? | SafetyMargin.io