WallStSmart

Ero Copper Corp (ERO)vsWestern Digital Corporation (WDC)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Western Digital Corporation generates 1175% more annual revenue ($11.78B vs $923.93M). WDC leads profitability with a 55.3% profit margin vs 31.6%. ERO trades at a lower P/E of 10.5x. WDC earns a higher WallStSmart Score of 80/100 (A-).

ERO

Strong Buy

78

out of 100

Grade: B+

Growth: 10.0Profit: 9.5Value: 5.7Quality: 6.5
Piotroski: 6/9Altman Z: 2.16

WDC

Exceptional Buy

80

out of 100

Grade: A-

Growth: 7.3Profit: 9.5Value: 5.7Quality: 6.5
Piotroski: 5/9Altman Z: 1.51
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

EROSignificantly Overvalued (-17.0%)

Margin of Safety

-17.0%

Fair Value

$26.93

Current Price

$25.78

$1.15 premium

UndervaluedFair: $26.93Overvalued

Intrinsic value data unavailable for WDC.

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

ERO6 strengths · Avg: 9.7/10
P/E RatioValuation
10.5x10/10

Attractively priced relative to earnings

Return on EquityProfitability
32.5%10/10

Every $100 of equity generates 33 in profit

Profit MarginProfitability
31.6%10/10

Keeps 32 of every $100 in revenue as profit

Operating MarginProfitability
34.7%10/10

Strong operational efficiency at 34.7%

Revenue GrowthGrowth
110.4%10/10

Revenue surging 110.4% year-over-year

Price/BookValuation
2.4x8/10

Reasonable price relative to book value

WDC6 strengths · Avg: 10.0/10
Market CapQuality
$225.26B10/10

Mega-cap, among the largest globally

Return on EquityProfitability
67.0%10/10

Every $100 of equity generates 67 in profit

Profit MarginProfitability
55.3%10/10

Keeps 55 of every $100 in revenue as profit

Operating MarginProfitability
37.0%10/10

Strong operational efficiency at 37.0%

Revenue GrowthGrowth
45.5%10/10

Revenue surging 45.5% year-over-year

EPS GrowthGrowth
482.9%10/10

Earnings expanding 482.9% YoY

Areas to Watch

ERO0 concerns · Avg: 0/10

No major concerns identified

WDC3 concerns · Avg: 3.3/10
P/E RatioValuation
39.1x4/10

Premium valuation, high expectations priced in

Altman Z-ScoreHealth
1.514/10

Distress zone — elevated risk

Price/BookValuation
27.5x2/10

Trading at 27.5x book value

Comparative Analysis Report

WallStSmart Research

Bull Case : ERO

The strongest argument for ERO centers on P/E Ratio, Return on Equity, Profit Margin. Profitability is solid with margins at 31.6% and operating margin at 34.7%. Revenue growth of 110.4% demonstrates continued momentum.

Bull Case : WDC

The strongest argument for WDC centers on Market Cap, Return on Equity, Profit Margin. Profitability is solid with margins at 55.3% and operating margin at 37.0%. Revenue growth of 45.5% demonstrates continued momentum.

Bear Case : ERO

No major red flags identified for ERO, but monitor valuation.

Bear Case : WDC

The primary concerns for WDC are P/E Ratio, Altman Z-Score, Price/Book.

Key Dynamics to Monitor

WDC carries more volatility with a beta of 2.20 — expect wider price swings.

ERO is growing revenue faster at 110.4% — sustainability is the question.

WDC generates stronger free cash flow (978M), providing more financial flexibility.

Monitor COPPER industry trends, competitive dynamics, and regulatory changes.

Bottom Line

WDC scores higher overall (80/100 vs 78/100), backed by strong 55.3% margins and 45.5% revenue growth. Both earn "Exceptional 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.

Ero Copper Corp

BASIC MATERIALS · COPPER · USA

Ero Copper Corp. The company is headquartered in Vancouver, Canada.

Western Digital Corporation

TECHNOLOGY · COMPUTER HARDWARE · USA

Western Digital Corporation (WDC, commonly known as Western Digital or WD) is an American computer hard disk drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology products, including storage devices, data center systems and cloud storage services.

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