WallStSmart

Lumentum Holdings Inc (LITE)vsWestern Digital Corporation (WDC)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Western Digital Corporation generates 373% more annual revenue ($11.78B vs $2.49B). WDC leads profitability with a 55.3% profit margin vs 17.7%. WDC appears more attractively valued with a PEG of 0.58. WDC earns a higher WallStSmart Score of 80/100 (A-).

LITE

Strong Buy

74

out of 100

Grade: B

Growth: 7.3Profit: 6.5Value: 5.0Quality: 4.0
Piotroski: 4/9Altman Z: 0.58

WDC

Exceptional Buy

80

out of 100

Grade: A-

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

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

LITE5 strengths · Avg: 9.0/10
Revenue GrowthGrowth
90.1%10/10

Revenue surging 90.1% year-over-year

EPS GrowthGrowth
71.1%10/10

Earnings expanding 71.1% YoY

Market CapQuality
$74.47B9/10

Large-cap with strong market position

PEG RatioValuation
0.638/10

Growing faster than its price suggests

Operating MarginProfitability
21.8%8/10

Strong operational efficiency at 21.8%

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

LITE4 concerns · Avg: 2.3/10
Debt/EquityHealth
1.113/10

Elevated debt levels

P/E RatioValuation
169.4x2/10

Premium valuation, high expectations priced in

Price/BookValuation
79.7x2/10

Trading at 79.7x book value

Altman Z-ScoreHealth
0.582/10

Distress zone — elevated risk

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 : LITE

The strongest argument for LITE centers on Revenue Growth, EPS Growth, Market Cap. Profitability is solid with margins at 17.7% and operating margin at 21.8%. Revenue growth of 90.1% 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 : LITE

The primary concerns for LITE are Debt/Equity, P/E Ratio, Price/Book. A P/E of 169.4x leaves little room for execution misses.

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.

LITE is growing revenue faster at 90.1% — sustainability is the question.

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

Monitor COMMUNICATION EQUIPMENT industry trends, competitive dynamics, and regulatory changes.

Bottom Line

WDC scores higher overall (80/100 vs 74/100), 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.

Lumentum Holdings Inc

TECHNOLOGY · COMMUNICATION EQUIPMENT · USA

Lumentum Holdings Inc. manufactures and sells optical and photonic products in the Americas, Asia-Pacific, Europe, the Middle East, and Africa. The company is headquartered in San Jose, California.

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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