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Compare Stocks › AZO vs BRK-B

AutoZone, Inc. (AZO) vs Berkshire Hathaway Inc. (BRK-B)

AZO
AutoZone, Inc.
$3341.58
VS
BRK-B
Berkshire Hathaway Inc.
$481.48

Rewards

AZO
  • ★AutoZone, Inc. has maintained ROIC above 15% for 4 consecutive years, indicating a durable competitive advantage.
  • ★AutoZone, Inc. scores 89/100 on the Economic Moat Score (Wide Moat), with revenue predictability as the strongest competitive dimension.
  • ★Share count has been reduced by 13% over the past 4 years through buybacks, increasing each share's claim on earnings.
BRK-B
  • ★Each dollar of retained earnings has created $1.66 of market value — management is creating shareholder value.
  • ★Net debt/EBITDA of -2.2x means the company holds more cash than debt — a net cash position.

Risks

AZO
  • ⚠Insiders have sold $34.2M worth of stock in the past 3 months — significant insider liquidation.
  • ⚠Free cash flow has declined at a 11.0% CAGR over the past 4 years — a concerning trend.
BRK-B
  • ⚠Berkshire Hathaway Inc. scores only 16/100 on the Economic Moat Score, suggesting limited durable competitive advantages.
  • ⚠Trailing P/E of 15.5x is 75% above the historical average of 8.9x — the stock trades at a premium to its own history.

Key Valuation Metrics

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AZO
BRK-B
Valuation
$1.79B
Free Cash Flow
$36.80B
3.24%
FCF Yield
3.54%
23.42
Trailing P/E
15.50
19.13
Forward P/E
22.11
Quality & Moat
19.90%
ROIC
11.31%
N/A
ROE
9.30%
52.15%
Gross Margin
26.15%
N/A
PEG Ratio
N/A
Balance Sheet Safety
N/A
Debt / Equity
0.19
N/A
Interest Coverage
N/A
2.92
Net Debt / EBITDA
-2.15
N/A
Dividend Yield
N/A
AZO: 3Ties: 1BRK-B: 4
AZOBRK-B

Historical Fundamentals

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AZO

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

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.

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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AZO
$1.22
created per $1 retained over 3 years
Value Creator
Σ Retained
$7.69B
Δ Market Cap
+$9.35B
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
BRK-B
$1.66
created per $1 retained over 3 years
Value Creator
Σ Retained
$252.19B
Δ Market Cap
+$417.98B
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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AZO
33.7% Margin of Safety
Price is 33.7% below estimated fair value
Current Price: $3341.58
Fair Value: $5036.42
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued
BRK-B
31.1% Margin of Safety
Price is 31.1% below estimated fair value
Current Price: $481.48
Fair Value: $699.14
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

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AZO

What growth rate is the market pricing in at $3342?

+11.8%
Market-Implied Owner Earnings Growth
Standard FCF implies +16.3%

The market implies +11.8% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +16.3%, reflecting heavy growth investment.

BRK-B

What growth rate is the market pricing in at $481?

+0.7%
Market-Implied Owner Earnings Growth
Standard FCF implies +8.8%

The market implies +0.7% Owner Earnings growth, above historical trends.

Standard FCF implies a demanding +8.8%, reflecting heavy growth investment.

Economic Moat Score

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AZO
89/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None

Wide moat with strength across all dimensions. Revenue Predictability is the standout factor.

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.
BRK-B
16/100
No Moat
70+ Wide · 40-69 Narrow · <40 None

No durable moat detected, though reinvestment efficiency shows some competitive positioning. The business lacks consistent evidence of sustainable advantages.

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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AZO
-2.36
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.
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.

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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AZO
Insiders 0.2%Institutions 94.4%Retail & Other 5.4%
No. of Institutional Holders1,851
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.
BRK-B
Insiders 0.3%Institutions 66.2%Retail & Other 33.5%
No. of Institutional Holders5,852
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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AZO
1
Buys (3M)
3
Buys (12M)
Total value (12M): $1.18M
GEORGE MICHAEL A
Director
$492,729
@ $3398.13 · 2025-12-22
HANNASCH BRIAN
Director
$498,784
@ $3393.09 · 2025-12-18
JACKSON JAMERE
Chief Financial Officer
$187,742
@ $3413.49 · 2025-12-10
BEDSOLE JENNA M
Officer
$99,256
@ $2757.11 · 2024-05-23
Open market purchases · includes direct & indirect ownership · excludes option exercises
BRK-B
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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AZO
4
Sells (3M)
14
Sells (12M)
Total value (12M): $214.37M
SMITH RICHARD CRAIG
Officer
$21.87M
@ $3700.00 · 2026-01-23
SMITH RICHARD CRAIG
Officer
$11.16M
@ $3500.00 · 2026-01-16
GRAVES EARL G JR
Director
$823,750
@ $3295.00 · 2026-01-02
MRKONIC GEORGE R JR
Director
$323,538
@ $3370.19 · 2026-01-02
BORNINKHOF MICHELLE K
Chief Technology Officer
$1.13M
@ $3775.00 · 2025-10-27
DANIELE PHILIP B. III
Chief Executive Officer
$10.18M
@ $4020.88 · 2025-10-17
MURPHY JOHN SCOTT
Officer
$11.94M
@ $4175.70 · 2025-09-24
SMITH RICHARD CRAIG
Officer
$11.63M
@ $3875.90 · 2025-07-24
BORNINKHOF MICHELLE K
Chief Technology Officer
$2.70M
@ $3597.13 · 2025-06-20
RHODES WILLIAM C III
Officer and Director
$102.00M
@ $3708.94 · 2025-06-10
JACKSON JAMERE
Chief Financial Officer
$9.74M
@ $3728.05 · 2025-05-30
HURTADO DOMINGO
Officer
$17.57M
@ $3660.00 · 2025-04-22
GOULD ERIC S
Officer
$5.70M
@ $3800.00 · 2025-03-31
DANIELE PHILIP B. III
Chief Executive Officer
$7.60M
@ $3800.01 · 2025-03-27
SMITH RICHARD CRAIG
Officer
$10.29M
@ $3610.00 · 2025-03-20
BORNINKHOF MICHELLE K
Chief Technology Officer
$481,575
@ $3567.22 · 2025-03-11
LERICHE DENNIS W
Officer
$5.67M
@ $3600.00 · 2025-03-07
CHILDRESS BAILEY L
Officer
$568,000
@ $3550.00 · 2025-03-05
MRKONIC GEORGE R JR
Director
$1.08M
@ $3202.29 · 2024-12-31
RHODES WILLIAM C III
Officer and Director
$40.39M
@ $3107.15 · 2024-10-10
RHODES WILLIAM C III
Officer and Director
$7.56M
@ $3105.97 · 2024-10-03
RHODES WILLIAM C III
Officer and Director
$34.28M
@ $3098.44 · 2024-10-02
MURPHY JOHN SCOTT
Officer
$4.91M
@ $3107.69 · 2024-09-25
RHODES WILLIAM C III
Officer and Director
$38.44M
@ $3189.75 · 2024-03-26
RHODES WILLIAM C III
Officer and Director
$21.37M
@ $3190.22 · 2024-03-26
GOULD ERIC S
Officer
$6.72M
@ $3200.00 · 2024-03-21
Direct ownership only · excludes indirect, option exercises, planned (10b5-1) sales & derivatives
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

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

🎭 Mr. Market's Mood

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AZO
FearGreed
😨Fear(36/100)

"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.
BRK-B
FearGreed
😐Neutral(48/100)

"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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AZO
⚪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 (36)
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 (48)
View AZO Full AnalysisView BRK-B Full Analysis