WallStSmart

MasTec Inc (MTZ)vsVistra Energy Corp (VST)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Vistra Energy Corp generates 16% more annual revenue ($17.74B vs $15.28B). VST leads profitability with a 5.3% profit margin vs 3.0%. VST appears more attractively valued with a PEG of 1.34. MTZ earns a higher WallStSmart Score of 58/100 (C).

MTZ

Buy

58

out of 100

Grade: C

Growth: 9.3Profit: 5.5Value: 2.0Quality: 6.0
Piotroski: 4/9Altman Z: 2.59

VST

Buy

53

out of 100

Grade: C-

Growth: 3.3Profit: 6.0Value: 3.3Quality: 2.5
Piotroski: 2/9Altman Z: 0.73
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

MTZSignificantly Overvalued (-38.8%)

Margin of Safety

-38.8%

Fair Value

$190.97

Current Price

$433.28

$242.31 premium

UndervaluedFair: $190.97Overvalued
VSTSignificantly Overvalued (-53.3%)

Margin of Safety

-53.3%

Fair Value

$101.06

Current Price

$158.29

$57.23 premium

UndervaluedFair: $101.06Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

MTZ2 strengths · Avg: 10.0/10
Revenue GrowthGrowth
34.5%10/10

Revenue surging 34.5% year-over-year

EPS GrowthGrowth
508.0%10/10

Earnings expanding 508.0% YoY

VST1 strengths · Avg: 9.0/10
Market CapQuality
$52.57B9/10

Large-cap with strong market position

Areas to Watch

MTZ4 concerns · Avg: 3.0/10
Price/BookValuation
10.4x4/10

Trading at 10.4x book value

Profit MarginProfitability
3.0%3/10

3.0% margin — thin

Operating MarginProfitability
3.7%3/10

Operating margin of 3.7%

PEG RatioValuation
2.542/10

Expensive relative to growth rate

VST4 concerns · Avg: 2.5/10
Profit MarginProfitability
5.3%3/10

5.3% margin — thin

Piotroski F-ScoreQuality
2/93/10

Weak financial health signals

P/E RatioValuation
71.6x2/10

Premium valuation, high expectations priced in

Price/BookValuation
20.4x2/10

Trading at 20.4x book value

Comparative Analysis Report

WallStSmart Research

Bull Case : MTZ

The strongest argument for MTZ centers on Revenue Growth, EPS Growth. Revenue growth of 34.5% demonstrates continued momentum.

Bull Case : VST

The strongest argument for VST centers on Market Cap. Revenue growth of 13.6% demonstrates continued momentum. PEG of 1.34 suggests the stock is reasonably priced for its growth.

Bear Case : MTZ

The primary concerns for MTZ are Price/Book, Profit Margin, Operating Margin. A P/E of 82.7x leaves little room for execution misses. Thin 3.0% margins leave little buffer for downturns.

Bear Case : VST

The primary concerns for VST are Profit Margin, Piotroski F-Score, P/E Ratio. A P/E of 71.6x leaves little room for execution misses. Debt-to-equity of 3.36 is elevated, increasing financial risk.

Key Dynamics to Monitor

MTZ profiles as a hypergrowth stock while VST is a value play — different risk/reward profiles.

MTZ carries more volatility with a beta of 1.80 — expect wider price swings.

MTZ is growing revenue faster at 34.5% — sustainability is the question.

MTZ generates stronger free cash flow (2M), providing more financial flexibility.

Bottom Line

MTZ scores higher overall (58/100 vs 53/100) and 34.5% 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.

MasTec Inc

INDUSTRIALS · ENGINEERING & CONSTRUCTION · USA

MasTec, Inc., an infrastructure construction company, provides engineering, construction, installation, maintenance, and upgrade services for communications, energy, utilities, and other infrastructure primarily in the United States and Canada. The company is headquartered in Coral Gables, Florida.

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Vistra Energy Corp

UTILITIES · UTILITIES - INDEPENDENT POWER PRODUCERS · USA

Vistra Corp. The company is headquartered in Irving, Texas.

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