WallStSmart

Berkshire Hathaway Inc (BRK-A)vsNB Bancorp, Inc. Common Stock (NBBK)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Berkshire Hathaway Inc generates 154272% more annual revenue ($384.69B vs $249.19M). NBBK leads profitability with a 23.7% profit margin vs 22.3%. BRK-A trades at a lower P/E of 12.8x. BRK-A earns a higher WallStSmart Score of 74/100 (B).

BRK-A

Strong Buy

74

out of 100

Grade: B

Growth: 7.3Profit: 7.5Value: 5.0Quality: 8.5
Piotroski: 4/9Altman Z: 2.59

NBBK

Strong Buy

68

out of 100

Grade: B-

Growth: 10.0Profit: 6.5Value: 6.0Quality: 5.0
Piotroski: 3/9Altman Z: 1.38

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

BRK-A6 strengths · Avg: 9.7/10
Market CapQuality
$1.09T10/10

Mega-cap, among the largest globally

Price/BookValuation
1.5x10/10

Reasonable price relative to book value

Operating MarginProfitability
32.6%10/10

Strong operational efficiency at 32.6%

EPS GrowthGrowth
107.8%10/10

Earnings expanding 107.8% YoY

Profit MarginProfitability
22.3%9/10

Keeps 22 of every $100 in revenue as profit

Debt/EquityHealth
0.179/10

Conservative balance sheet, low leverage

NBBK6 strengths · Avg: 9.3/10
Price/BookValuation
1.1x10/10

Reasonable price relative to book value

Operating MarginProfitability
40.7%10/10

Strong operational efficiency at 40.7%

Revenue GrowthGrowth
48.6%10/10

Revenue surging 48.6% year-over-year

Profit MarginProfitability
23.7%9/10

Keeps 24 of every $100 in revenue as profit

Debt/EquityHealth
0.229/10

Conservative balance sheet, low leverage

P/E RatioValuation
15.0x8/10

Attractively priced relative to earnings

Areas to Watch

BRK-A1 concerns · Avg: 2.0/10
PEG RatioValuation
9.682/10

Expensive relative to growth rate

NBBK4 concerns · Avg: 2.8/10
Market CapQuality
$1.00B3/10

Smaller company, higher risk/reward

Return on EquityProfitability
7.0%3/10

ROE of 7.0% — below average capital efficiency

Piotroski F-ScoreQuality
3/93/10

Weak financial health signals

Altman Z-ScoreHealth
1.382/10

Distress zone — elevated risk

Comparative Analysis Report

WallStSmart Research

Bull Case : BRK-A

The strongest argument for BRK-A centers on Market Cap, Price/Book, Operating Margin. Profitability is solid with margins at 22.3% and operating margin at 32.6%.

Bull Case : NBBK

The strongest argument for NBBK centers on Price/Book, Operating Margin, Revenue Growth. Profitability is solid with margins at 23.7% and operating margin at 40.7%. Revenue growth of 48.6% demonstrates continued momentum.

Bear Case : BRK-A

The primary concerns for BRK-A are PEG Ratio.

Bear Case : NBBK

The primary concerns for NBBK are Market Cap, Return on Equity, Piotroski F-Score.

Key Dynamics to Monitor

BRK-A profiles as a mature stock while NBBK is a growth play — different risk/reward profiles.

BRK-A carries more volatility with a beta of 0.60 — expect wider price swings.

NBBK is growing revenue faster at 48.6% — sustainability is the question.

BRK-A generates stronger free cash flow (5.6B), providing more financial flexibility.

Bottom Line

BRK-A scores higher overall (74/100 vs 68/100), backed by strong 22.3% margins. Both earn "Strong Buy" and "Strong Buy" ratings respectively — the choice depends on your investment horizon and risk tolerance.

This analysis is generated from publicly available financial data. Not financial advice.

Berkshire Hathaway Inc

FINANCIAL SERVICES · INSURANCE - DIVERSIFIED · USA

Berkshire Hathaway Inc. is an American multinational conglomerate holding company headquartered in Omaha, Nebraska, United States. The company wholly owns GEICO, Duracell, Dairy Queen, BNSF, Lubrizol, Fruit of the Loom, Helzberg Diamonds, Long & Foster, FlightSafety International, Pampered Chef, Forest River, and NetJets, and also owns 38.6% of Pilot Flying J; and significant minority holdings in public companies Kraft Heinz Company (26.7%), American Express (18.8%), The Coca-Cola Company (9.32%), Bank of America (11.9%), and Apple (6.3%).

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NB Bancorp, Inc. Common Stock

FINANCIAL SERVICES · BANKS - REGIONAL · USA

NB Bancorp, Inc. is a leading financial holding company headquartered in the Northeastern United States, delivering a diverse array of commercial banking services through its subsidiary, Northbridge Bank. Focusing primarily on small and medium-sized enterprises as well as individual clients, the bank offers products that include loans, deposit accounts, and treasury management solutions. Committed to community banking, NB Bancorp utilizes extensive local market knowledge to foster enduring client relationships and optimize service delivery. The company is strategically positioned to enhance operational efficiency and spur asset growth, with the goal of generating sustainable long-term value for shareholders in a competitive banking environment.

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