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Compare Stocks › BRK-B vs MMM

Berkshire Hathaway Inc. (BRK-B) vs 3M Company (MMM)

BRK-B
Berkshire Hathaway Inc.
$468.44
VS
MMM
3M Company
$142.49

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.
MMM
  • ★Altman Z-Score of 4.26 indicates very low bankruptcy risk — the company is firmly in the safe zone.

Risks

BRK-B
  • ⚠FCF yield of 6.1% suggests reasonable valuation assuming continued moderate growth.
  • ⚠Trailing P/E of 15.1x is 70% above the historical average of 8.9x — the stock trades at a premium to its own history.
MMM
  • ⚠Trailing P/E of 27.5x is 54% above the historical average of 17.8x — the stock trades at a premium to its own history.
  • ⚠High leverage (3.96x debt/equity) combined with thin interest coverage (-1.0x) poses financial risk.
  • ⚠Insiders have sold $8.8M worth of stock in the past 3 months — significant insider liquidation.

Key Valuation Metrics

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BRK-B
MMM
Valuation
$61.23B
Free Cash Flow
$2.32B
6.06%
FCF Yield
3.13%
15.10
Trailing P/E
27.45
21.74
Forward P/E
15.07
Quality & Moat
4.96%
ROIC
28.04%
9.18%
ROE
98.16%
27.78%
Gross Margin
39.71%
0.13
PEG Ratio
1.50
Balance Sheet Safety
0.18
Debt / Equity
3.96
N/A
Interest Coverage
N/A
-2.28
Net Debt / EBITDA
1.17
N/A
Dividend Yield
2.19%
BRK-B: 6Ties: 1MMM: 4
BRK-BMMM

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.

MMM

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
MMM
N/A
Net losses over 3 years — test not applicable
Company had negative cumulative retained earnings
Σ Retained
$-6.43B
Δ Market Cap
+$29.83B
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
31.7% Margin of Safety
Price is 31.7% below estimated fair value
Current Price: $468.44
Fair Value: $685.42
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
MMM
11.3% Overvalued
Price is 11.3% above estimated fair value
Current Price: $142.49
Fair Value: $128.07
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 $468?

-0.4%
Market-Implied Owner Earnings Growth
Standard FCF implies +0.8%

The market implies -0.4% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +0.8%, reflecting heavy growth investment.

MMM

What growth rate is the market pricing in at $142?

+10.8%
Market-Implied Owner Earnings Growth
Standard FCF implies +15.4%

The market implies +10.8% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +15.4%, reflecting heavy growth investment.

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.
MMM
45/100
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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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.
MMM
-2.28
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.
MMM
Insiders 0.1%Institutions 75.8%Retail & Other 24.1%
No. of Institutional Holders2,762
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
MMM
0
Buys (3M)
0
Buys (12M)
GORALSKI CHRISTIAN T JR
Officer
$1,822
@ $107.18 · 2024-10-23
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
MMM
4
Sells (3M)
12
Sells (12M)
Total value (12M): $21.69M
REINSETH THERESA E
Officer
$888,796
@ $172.75 · 2026-02-11
DICKSON ZOE L
Officer
$4.27M
@ $170.34 · 2026-02-09
DICKSON ZOE L
Officer
$3.49M
@ $169.97 · 2026-02-09
CHAVEZ RODRIGUEZ BEATRIZ KARINA
Officer
$203,645
@ $171.13 · 2026-02-09
DICKSON ZOE L
Officer
$2.35M
@ $169.78 · 2025-11-13
DICKSON ZOE L
Officer
$2.31M
@ $169.82 · 2025-11-13
MURPHY MARK W
Chief Technology Officer
$3.17M
@ $166.55 · 2025-10-29
GORALSKI CHRISTIAN T JR
President
$925,860
@ $150.18 · 2025-08-07
REINSETH THERESA E
Officer
$523,741
@ $150.63 · 2025-08-05
BANOVETZ JOHN PATRICK
Officer
$1.15M
@ $148.37 · 2025-05-23
RHODES KEVIN H
Officer
$1.23M
@ $154.02 · 2025-05-20
DICKSON ZOE L
Officer
$1.18M
@ $149.02 · 2025-05-15
CLARKE VICTORIA
Officer
$269,878
@ $154.22 · 2025-01-31
ROMAN MICHAEL F
Chairman of the Board
$7.55M
@ $152.30 · 2025-01-29
BANOVETZ JOHN PATRICK
Officer
$726,249
@ $151.36 · 2025-01-27
DICKSON ZOE L
Officer
$542,957
@ $149.41 · 2025-01-27
CHAVEZ RODRIGUEZ BEATRIZ KARINA
President
$247,163
@ $150.25 · 2025-01-27
RHODES KEVIN H
Officer
$1.01M
@ $149.85 · 2025-01-27
REINSETH THERESA E
Officer
$346,241
@ $149.95 · 2025-01-24
ROMAN MICHAEL F
Chairman of the Board
$6.79M
@ $150.01 · 2025-01-24
GORALSKI CHRISTIAN T JR
Officer
$944,070
@ $149.43 · 2025-01-24
REINSETH THERESA E
Officer
$131,925
@ $127.71 · 2024-11-20
ROMAN MICHAEL F
Chairman of the Board
$700,608
@ $123.46 · 2024-08-07
REINSETH THERESA E
Chief Financial Officer
$260,652
@ $124.12 · 2024-08-06
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(50/100)

"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.
MMM
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.

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 (50)
MMM
⚪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)
View BRK-B Full AnalysisView MMM Full Analysis