Compare StocksBRK-B vs SNDK

Berkshire Hathaway Inc. (BRK-B) vs Sandisk Corporation (SNDK)

BRK-B
Berkshire Hathaway Inc.
$468.44
VS
SNDK
Sandisk Corporation
$1264.09

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.
SNDK
  • Altman Z-Score of 6.36 indicates very low bankruptcy risk — the company is firmly in the safe zone.
  • Net debt/EBITDA of -0.6x means the company holds more cash than debt — a net cash position.

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.
SNDK
  • FCF yield of 1.2% is below 3%, meaning the market is pricing in substantial future growth to justify the current price.
  • Insiders have sold $2.2M worth of stock in the past 3 months — significant insider liquidation.

Key Valuation Metrics

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BRK-B
SNDK
Valuation
$61.23B
Free Cash Flow
$2.26B
6.06%
FCF Yield
1.21%
15.10
Trailing P/E
43.11
21.74
Forward P/E
7.59
Quality & Moat
4.96%
ROIC
52.14%
9.18%
ROE
-11.92%
27.78%
Gross Margin
56.04%
0.13
PEG Ratio
N/A
Balance Sheet Safety
0.18
Debt / Equity
0.02
N/A
Interest Coverage
N/A
-2.28
Net Debt / EBITDA
-0.63
N/A
Dividend Yield
N/A
BRK-B: 5Ties: 1SNDK: 4
BRK-BSNDK

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.

SNDK
No data available for this metric.

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
SNDK
Not enough historical data to compute the retained earnings test.

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
SNDK
11.5% Overvalued
Price is 11.5% above estimated fair value
Current Price: $1264.09
Fair Value: $1133.80
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.

SNDK

What growth rate is the market pricing in at $1264?

+26.9%
Market-Implied FCF Growth Rate

Market pricing in significantly higher growth than history — aggressive.

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.
SNDK
47/100
Narrow Moat
70+ Wide · 40-69 Narrow · <40 None

Narrow moat with revenue predictability 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 3 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.
SNDK
-3.69
Unlikely Manipulator
Above -1.78 = likely manipulator · -2.22 to -1.78 = grey zone
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.
SNDK
Insiders 5.5%Institutions 83.5%Retail & Other 11.0%
No. of Institutional Holders1,187
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
SNDK
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
SNDK
1
Sells (3M)
2
Sells (12M)
Total value (12M): $2.44M
SUZUKI MIYUKI
Director
$2.20M
@ $627.53 · 2026-02-25
SAYINER NECIP
Director
$248,027
@ $195.14 · 2025-12-03
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.
SNDK
FearGreed
😏Greed(62/100)

"Market is optimistic — be cautious and ensure you have a margin of safety"

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)
SNDK
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: Greed (62)
View BRK-B Full AnalysisView SNDK Full Analysis
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