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Compare Stocks › BRK-B vs MLM

Berkshire Hathaway Inc. (BRK-B) vs Martin Marietta Materials, Inc. (MLM)

BRK-B
Berkshire Hathaway Inc.
$473.01
VS
MLM
Martin Marietta Materials, Inc.
$614.49

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.
MLM
  • ★Free cash flow has grown at a 24.3% CAGR over the past 4 years, demonstrating strong earnings power growth.
  • ★PEG ratio of 0.03 suggests the stock is undervalued relative to its growth rate — paying less than 1x for each unit of earnings growth.
  • ★Altman Z-Score of 3.81 indicates very low bankruptcy risk — the company is firmly in the safe zone.

Risks

BRK-B
  • ⚠FCF yield of 6.0% suggests reasonable valuation assuming continued moderate growth.
  • ⚠Trailing P/E of 15.2x is 72% above the historical average of 8.9x — the stock trades at a premium to its own history.
MLM
  • ⚠Each dollar of retained earnings has produced only $0.33 of earning power — shareholders may have been better served by dividends.
  • ⚠FCF yield of 2.3% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
  • ⚠Trailing P/E of 38.5x is 54% above the historical average of 24.9x — the stock trades at a premium to its own history.

Key Valuation Metrics

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BRK-B
MLM
Valuation
$61.23B
Free Cash Flow
$841.75M
6.00%
FCF Yield
2.27%
15.24
Trailing P/E
38.45
21.95
Forward P/E
26.49
Quality & Moat
4.96%
ROIC
3.75%
9.18%
ROE
10.06%
27.78%
Gross Margin
29.75%
0.13
PEG Ratio
0.03
Balance Sheet Safety
0.18
Debt / Equity
0.50
N/A
Interest Coverage
N/A
-2.28
Net Debt / EBITDA
2.57
N/A
Dividend Yield
0.54%
BRK-B: 7Ties: 1MLM: 3
BRK-BMLM

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.

MLM

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
MLM
$4.43
created per $1 retained over 3 years
Exceptional Value Creator
Σ Retained
$3.74B
Δ Market Cap
+$16.56B
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
31.0% Margin of Safety
Price is 31.0% below estimated fair value
Current Price: $473.01
Fair Value: $685.41
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
MLM
29.0% Overvalued
Price is 29.0% above estimated fair value
Current Price: $614.49
Fair Value: $476.27
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 $473?

-0.3%
Market-Implied Owner Earnings Growth
Standard FCF implies +1.0%

The market implies -0.3% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +1.0%, reflecting heavy growth investment.

MLM

What growth rate is the market pricing in at $614?

+20.3%
Market-Implied FCF Growth Rate

Market above historical growth — verify catalysts.

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.
MLM
43/100
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 5 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.
MLM
-2.67
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.
MLM
Insiders 0.8%Institutions 101.3%
No. of Institutional Holders1,461
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
MLM
0
Buys (3M)
0
Buys (12M)
PETRO MICHAEL J
Officer
$249,904
@ $454.37 · 2025-03-04
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
MLM
0
Sells (3M)
1
Sells (12M)
Total value (12M): $636,626
PEREZ LAREE E
Director
$636,626
@ $613.32 · 2025-08-08
MCCUNNIFF DONALD A
Officer
$632,700
@ $475.00 · 2025-03-05
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(52/100)

"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.
MLM
FearGreed
😐Neutral(49/100)

"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 (52)
MLM
⚪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 (49)
View BRK-B Full AnalysisView MLM Full Analysis