WallStSmart

GlaxoSmithKline PLC ADR (GSK)vsIDEXX Laboratories Inc (IDXX)

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Smart Verdict

WallStSmart Research — data-driven comparison

GlaxoSmithKline PLC ADR generates 637% more annual revenue ($32.78B vs $4.45B). IDXX leads profitability with a 24.6% profit margin vs 17.8%. GSK appears more attractively valued with a PEG of 0.50. GSK earns a higher WallStSmart Score of 66/100 (B-).

GSK

Strong Buy

66

out of 100

Grade: B-

Growth: 4.7Profit: 9.0Value: 7.3Quality: 4.0
Piotroski: 5/9Altman Z: 1.26

IDXX

Buy

63

out of 100

Grade: C+

Growth: 6.7Profit: 9.5Value: 2.7Quality: 5.0
Piotroski: 5/9
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

GSKFair Value (-3.1%)

Margin of Safety

-3.1%

Fair Value

$56.71

Current Price

$50.41

$6.30 premium

UndervaluedFair: $56.71Overvalued
IDXXSignificantly Overvalued (-41.2%)

Margin of Safety

-41.2%

Fair Value

$459.52

Current Price

$560.11

$100.59 premium

UndervaluedFair: $459.52Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

GSK5 strengths · Avg: 9.4/10
PEG RatioValuation
0.5010/10

Growing faster than its price suggests

Return on EquityProfitability
40.9%10/10

Every $100 of equity generates 41 in profit

Operating MarginProfitability
36.3%10/10

Strong operational efficiency at 36.3%

Market CapQuality
$101.38B9/10

Large-cap with strong market position

P/E RatioValuation
13.1x8/10

Attractively priced relative to earnings

IDXX3 strengths · Avg: 9.7/10
Return on EquityProfitability
72.9%10/10

Every $100 of equity generates 73 in profit

Operating MarginProfitability
31.8%10/10

Strong operational efficiency at 31.8%

Profit MarginProfitability
24.6%9/10

Keeps 25 of every $100 in revenue as profit

Areas to Watch

GSK3 concerns · Avg: 3.0/10
Revenue GrowthGrowth
1.5%4/10

1.5% revenue growth

Debt/EquityHealth
1.103/10

Elevated debt levels

Altman Z-ScoreHealth
1.262/10

Distress zone — elevated risk

IDXX3 concerns · Avg: 2.0/10
PEG RatioValuation
4.032/10

Expensive relative to growth rate

P/E RatioValuation
42.0x2/10

Premium valuation, high expectations priced in

Price/BookValuation
27.8x2/10

Trading at 27.8x book value

Comparative Analysis Report

WallStSmart Research

Bull Case : GSK

The strongest argument for GSK centers on PEG Ratio, Return on Equity, Operating Margin. Profitability is solid with margins at 17.8% and operating margin at 36.3%. PEG of 0.50 suggests the stock is reasonably priced for its growth.

Bull Case : IDXX

The strongest argument for IDXX centers on Return on Equity, Operating Margin, Profit Margin. Profitability is solid with margins at 24.6% and operating margin at 31.8%. Revenue growth of 14.3% demonstrates continued momentum.

Bear Case : GSK

The primary concerns for GSK are Revenue Growth, Debt/Equity, Altman Z-Score.

Bear Case : IDXX

The primary concerns for IDXX are PEG Ratio, P/E Ratio, Price/Book. A P/E of 42.0x leaves little room for execution misses.

Key Dynamics to Monitor

GSK profiles as a value stock while IDXX is a mature play — different risk/reward profiles.

IDXX carries more volatility with a beta of 1.57 — expect wider price swings.

IDXX is growing revenue faster at 14.3% — sustainability is the question.

GSK generates stronger free cash flow (698M), providing more financial flexibility.

Bottom Line

GSK scores higher overall (66/100 vs 63/100), backed by strong 17.8% margins. Both earn "Strong Buy" and "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.

GlaxoSmithKline PLC ADR

HEALTHCARE · DRUG MANUFACTURERS - GENERAL · USA

GlaxoSmithKline plc is dedicated to the creation, discovery, development, manufacture and marketing of pharmaceuticals, vaccines, over-the-counter drugs and health-related consumer products in the UK, US and internationally. The company is headquartered in Brentford, the United Kingdom.

IDEXX Laboratories Inc

HEALTHCARE · DIAGNOSTICS & RESEARCH · USA

IDEXX Laboratories, Inc. is an American multinational corporation engaged in the development, manufacture, and distribution of products and services for the companion animal veterinary, livestock and poultry, water testing, and dairy markets.

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