WallStSmart

National Grid PLC ADR (NGG)vsRio Tinto ADR (RIO)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Rio Tinto ADR generates 230% more annual revenue ($57.64B vs $17.48B). RIO leads profitability with a 17.3% profit margin vs 16.4%. NGG appears more attractively valued with a PEG of 1.06. RIO earns a higher WallStSmart Score of 54/100 (C-).

NGG

Buy

50

out of 100

Grade: C-

Growth: 2.0Profit: 6.5Value: 7.3Quality: 5.5
Piotroski: 4/9Altman Z: 1.24

RIO

Buy

54

out of 100

Grade: C-

Growth: 6.0Profit: 8.0Value: 4.7Quality: 5.0
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

NGGSignificantly Overvalued (-235.0%)

Margin of Safety

-235.0%

Fair Value

$27.06

Current Price

$84.29

$57.23 premium

UndervaluedFair: $27.06Overvalued
RIOSignificantly Overvalued (-136.9%)

Margin of Safety

-136.9%

Fair Value

$41.41

Current Price

$87.54

$46.13 premium

UndervaluedFair: $41.41Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

NGG2 strengths · Avg: 8.5/10
Market CapQuality
$81.59B9/10

Large-cap with strong market position

Operating MarginProfitability
24.1%8/10

Strong operational efficiency at 24.1%

RIO5 strengths · Avg: 8.2/10
Market CapQuality
$139.55B9/10

Large-cap with strong market position

P/E RatioValuation
14.1x8/10

Attractively priced relative to earnings

Price/BookValuation
2.3x8/10

Reasonable price relative to book value

Operating MarginProfitability
25.3%8/10

Strong operational efficiency at 25.3%

Free Cash FlowQuality
$2.53B8/10

Generating 2.5B in free cash flow

Areas to Watch

NGG4 concerns · Avg: 3.0/10
Price/BookValuation
8.4x4/10

Trading at 8.4x book value

Return on EquityProfitability
7.9%3/10

ROE of 7.9% — below average capital efficiency

Debt/EquityHealth
1.233/10

Elevated debt levels

Revenue GrowthGrowth
-11.3%2/10

Revenue declined 11.3%

RIO2 concerns · Avg: 2.0/10
PEG RatioValuation
5.692/10

Expensive relative to growth rate

EPS GrowthGrowth
-5.6%2/10

Earnings declined 5.6%

Comparative Analysis Report

WallStSmart Research

Bull Case : NGG

The strongest argument for NGG centers on Market Cap, Operating Margin. Profitability is solid with margins at 16.4% and operating margin at 24.1%. PEG of 1.06 suggests the stock is reasonably priced for its growth.

Bull Case : RIO

The strongest argument for RIO centers on Market Cap, P/E Ratio, Price/Book. Profitability is solid with margins at 17.3% and operating margin at 25.3%. Revenue growth of 14.6% demonstrates continued momentum.

Bear Case : NGG

The primary concerns for NGG are Price/Book, Return on Equity, Debt/Equity.

Bear Case : RIO

The primary concerns for RIO are PEG Ratio, EPS Growth.

Key Dynamics to Monitor

NGG profiles as a declining stock while RIO is a mature play — different risk/reward profiles.

RIO carries more volatility with a beta of 0.65 — expect wider price swings.

RIO is growing revenue faster at 14.6% — sustainability is the question.

RIO generates stronger free cash flow (2.5B), providing more financial flexibility.

Bottom Line

RIO scores higher overall (54/100 vs 50/100), backed by strong 17.3% margins and 14.6% revenue growth. Both earn "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.

National Grid PLC ADR

UTILITIES · UTILITIES - REGULATED ELECTRIC · USA

National Grid plc transmits and distributes electricity and natural gas. The company is headquartered in London, the United Kingdom.

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Rio Tinto ADR

BASIC MATERIALS · OTHER INDUSTRIAL METALS & MINING · USA

Rio Tinto Group is dedicated to the exploration, extraction and processing of mineral resources worldwide. The company is headquartered in London, the United Kingdom.

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