Compare StocksBRK-B vs TDG

Berkshire Hathaway Inc. (BRK-B) vs TransDigm Group Incorporated (TDG)

BRK-B
Berkshire Hathaway Inc.
$481.48
VS
TDG
TransDigm Group Incorporated
$1191.94

Rewards

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.
TDG
  • TransDigm Group Incorporated has maintained ROIC above 10% for 4 consecutive years, suggesting solid business economics.
  • TransDigm Group Incorporated scores 94/100 on the Economic Moat Score (Wide Moat), with margin stability as the strongest competitive dimension.
  • Free cash flow has grown at a 29.9% CAGR over the past 4 years, demonstrating strong earnings power growth.

Risks

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.
TDG
  • FCF yield of 2.7% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
  • Net debt/EBITDA of 5.9x indicates heavy leverage — it would take over 4 years of EBITDA to pay off net debt.
  • Insiders have sold $16.3M worth of stock in the past 3 months — significant insider liquidation.

Key Valuation Metrics

Learn more →
BRK-B
TDG
Valuation
$36.80B
Free Cash Flow
$1.82B
3.54%
FCF Yield
2.70%
15.50
Trailing P/E
38.31
22.11
Forward P/E
25.97
Quality & Moat
11.31%
ROIC
10.92%
9.30%
ROE
N/A
26.15%
Gross Margin
59.69%
N/A
PEG Ratio
N/A
Balance Sheet Safety
0.19
Debt / Equity
N/A
N/A
Interest Coverage
N/A
-2.15
Net Debt / EBITDA
5.93
N/A
Dividend Yield
N/A
BRK-B: 5Ties: 2TDG: 1
BRK-BTDG

Historical Fundamentals

Learn more →
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.

TDG

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

Learn more →
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
TDG
N/A
Net losses over 3 years — test not applicable
Company had negative cumulative retained earnings
Σ Retained
$-6.62B
Δ Market Cap
+$40.74B
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

Learn more →
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
TDG
29.7% Overvalued
Price is 29.7% above estimated fair value
Current Price: $1191.94
Fair Value: $918.76
Strongly undervalued
Undervalued
Fairly valued
Overvalued
Strongly overvalued

Reverse DCF — Market-Implied Growth

Learn more →
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.

TDG

What growth rate is the market pricing in at $1192?

+19.0%
Market-Implied Owner Earnings Growth
Standard FCF implies +20.8%

The market implies +19.0% Owner Earnings growth, below historical trends — potential opportunity.

Standard FCF implies a more demanding +20.8%, reflecting heavy growth investment expected to generate future returns.

Economic Moat Score

Learn more →
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.
TDG
94/100
Wide Moat
70+ Wide · 40-69 Narrow · <40 None

Wide moat with strength across all dimensions. Margin Stability 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.

Forensic Accounting

Learn more →
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.
TDG
-2.38
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

Learn more →
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.
TDG
Insiders 0.4%Institutions 97.3%Retail & Other 2.3%
No. of Institutional Holders1,495
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

Learn more →
BRK-B
0
Buys (3M)
0
Buys (12M)
No open market insider purchases found.
Open market purchases · includes direct & indirect ownership · excludes option exercises
TDG
2
Buys (3M)
3
Buys (12M)
Total value (12M): $3.84M
SMALL ROBERT J
Director
$1,285
@ $1285.00 · 2026-02-25
LISMAN MICHAEL
Chief Executive Officer
$1.22M
@ $1284.26 · 2026-02-06
LISMAN MICHAEL
Chief Executive Officer
$2.62M
@ $1339.14 · 2025-11-14
Open market purchases · includes direct & indirect ownership · excludes option exercises

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

Insider Selling Activity

Learn more →
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
TDG
5
Sells (3M)
23
Sells (12M)
Total value (12M): $80.94M
REISS JOEL
Chief Operating Officer
$4.85M
@ $1243.70 · 2026-03-16
REISS JOEL
Chief Operating Officer
$5.05M
@ $1293.88 · 2026-02-17
MURPHY PATRICK JOSEPH
Chief Operating Officer
$414,729
@ $1430.10 · 2026-02-02
REISS JOEL
Chief Operating Officer
$5.58M
@ $1429.92 · 2026-01-15
MURPHY PATRICK JOSEPH
Chief Operating Officer
$385,419
@ $1329.03 · 2026-01-02
REISS JOEL
Chief Operating Officer
$5.03M
@ $1290.52 · 2025-12-15
SMALL ROBERT J
Director
$6.06M
@ $1290.19 · 2025-12-10
MURPHY PATRICK JOSEPH
Chief Operating Officer
$391,807
@ $1351.06 · 2025-12-01
REISS JOEL
Chief Operating Officer
$5.23M
@ $1340.00 · 2025-11-17
MURPHY PATRICK JOSEPH
Chief Operating Officer
$379,900
@ $1310.00 · 2025-11-03
MURPHY PATRICK JOSEPH
Chief Operating Officer
$785,761
@ $1354.76 · 2025-10-27
REISS JOEL
Chief Operating Officer
$3.84M
@ $1279.59 · 2025-10-20
REISS JOEL
Chief Operating Officer
$3.83M
@ $1276.07 · 2025-09-22
GRAFF MICHAEL S
Director
$2.47M
@ $1402.09 · 2025-08-26
REISS JOEL
Chief Operating Officer
$4.22M
@ $1406.07 · 2025-08-20
REISS JOEL
Chief Operating Officer
$4.79M
@ $1597.86 · 2025-07-21
REISS JOEL
Chief Operating Officer
$4.27M
@ $1424.27 · 2025-06-20
WYNNE SARAH
Chief Financial Officer
$2.61M
@ $1450.00 · 2025-06-13
WYNNE SARAH
Chief Financial Officer
$4.65M
@ $1452.15 · 2025-06-12
HENNESSY SEAN P
Director
$6.75M
@ $1436.52 · 2025-05-20
REISS JOEL
Chief Operating Officer
$4.30M
@ $1434.35 · 2025-05-20
WARREN JESSICA L
General Counsel
$698,250
@ $1425.00 · 2025-05-13
REISS JOEL
Chief Operating Officer
$4.36M
@ $1321.80 · 2025-04-21
REISS JOEL
Chief Operating Officer
$4.08M
@ $1360.04 · 2025-03-20
WARREN JESSICA L
General Counsel
$378,487
@ $1376.32 · 2025-03-04
REISS JOEL
Chief Operating Officer
$3.97M
@ $1323.02 · 2025-02-20
SMALL ROBERT J
Director
$4.83M
@ $1322.19 · 2025-02-14
REISS JOEL
Chief Operating Officer
$4.08M
@ $1359.06 · 2025-01-21
REISS JOEL
Chief Operating Officer
$3.77M
@ $1257.09 · 2024-12-20
REISS JOEL
Chief Operating Officer
$3.76M
@ $1253.39 · 2024-11-20
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

Learn more →
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.
TDG
FearGreed
😨Fear(35/100)

"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

Learn more →
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)
TDG
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 (35)
View BRK-B Full AnalysisView TDG Full Analysis
Berkshire Hathaway Inc. (BRK-B) vs TransDigm Group Incorporated (TDG) Stock Comparison | SafetyMargin.io