WallStSmart

MPLX LP (MPLX)vsExxon Mobil Corp (XOM)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Exxon Mobil Corp generates 2678% more annual revenue ($326.01B vs $11.73B). MPLX leads profitability with a 40.0% profit margin vs 7.8%. XOM appears more attractively valued with a PEG of 1.38. MPLX earns a higher WallStSmart Score of 52/100 (C-).

MPLX

Buy

52

out of 100

Grade: C-

Growth: 2.7Profit: 9.0Value: 4.0Quality: 4.3
Piotroski: 3/9

XOM

Buy

50

out of 100

Grade: C-

Growth: 2.7Profit: 5.5Value: 4.7Quality: 6.5
Piotroski: 1/9Altman Z: 3.44
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

MPLXSignificantly Overvalued (-23.4%)

Margin of Safety

-23.4%

Fair Value

$45.78

Current Price

$56.32

$10.54 premium

UndervaluedFair: $45.78Overvalued
XOMSignificantly Overvalued (-82.9%)

Margin of Safety

-82.9%

Fair Value

$81.96

Current Price

$149.92

$67.96 premium

UndervaluedFair: $81.96Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

MPLX5 strengths · Avg: 9.4/10
Return on EquityProfitability
33.4%10/10

Every $100 of equity generates 33 in profit

Profit MarginProfitability
40.0%10/10

Keeps 40 of every $100 in revenue as profit

Operating MarginProfitability
36.1%10/10

Strong operational efficiency at 36.1%

Market CapQuality
$56.50B9/10

Large-cap with strong market position

P/E RatioValuation
12.1x8/10

Attractively priced relative to earnings

XOM5 strengths · Avg: 9.0/10
Market CapQuality
$619.92B10/10

Mega-cap, among the largest globally

Altman Z-ScoreHealth
3.4410/10

Safe zone — low bankruptcy risk

Debt/EquityHealth
0.199/10

Conservative balance sheet, low leverage

Price/BookValuation
2.4x8/10

Reasonable price relative to book value

Free Cash FlowQuality
$2.23B8/10

Generating 2.2B in free cash flow

Areas to Watch

MPLX4 concerns · Avg: 2.5/10
Debt/EquityHealth
1.863/10

Elevated debt levels

Piotroski F-ScoreQuality
3/93/10

Weak financial health signals

PEG RatioValuation
3.292/10

Expensive relative to growth rate

Revenue GrowthGrowth
-2.8%2/10

Revenue declined 2.8%

XOM4 concerns · Avg: 3.5/10
P/E RatioValuation
25.2x4/10

Moderate valuation

Revenue GrowthGrowth
2.6%4/10

2.6% revenue growth

Profit MarginProfitability
7.8%3/10

7.8% margin — thin

Piotroski F-ScoreQuality
1/93/10

Weak financial health signals

Comparative Analysis Report

WallStSmart Research

Bull Case : MPLX

The strongest argument for MPLX centers on Return on Equity, Profit Margin, Operating Margin. Profitability is solid with margins at 40.0% and operating margin at 36.1%.

Bull Case : XOM

The strongest argument for XOM centers on Market Cap, Altman Z-Score, Debt/Equity. PEG of 1.38 suggests the stock is reasonably priced for its growth.

Bear Case : MPLX

The primary concerns for MPLX are Debt/Equity, Piotroski F-Score, PEG Ratio. Debt-to-equity of 1.86 is elevated, increasing financial risk.

Bear Case : XOM

The primary concerns for XOM are P/E Ratio, Revenue Growth, Profit Margin.

Key Dynamics to Monitor

MPLX profiles as a declining stock while XOM is a value play — different risk/reward profiles.

MPLX carries more volatility with a beta of 0.48 — expect wider price swings.

XOM is growing revenue faster at 2.6% — sustainability is the question.

XOM generates stronger free cash flow (2.2B), providing more financial flexibility.

Bottom Line

MPLX scores higher overall (52/100 vs 50/100), backed by strong 40.0% margins. 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.

MPLX LP

ENERGY · OIL & GAS MIDSTREAM · USA

MPLX LP owns and operates energy infrastructure and midstream logistics assets primarily in the United States.

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Exxon Mobil Corp

ENERGY · OIL & GAS INTEGRATED · USA

Exxon Mobil Corporation, stylized as ExxonMobil, is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil, and was formed on November 30, 1999 by the merger of Exxon (formerly the Standard Oil Company of New Jersey) and Mobil (formerly the Standard Oil Company of New York). ExxonMobil's primary brands are Exxon, Mobil, Esso, and ExxonMobil Chemical. ExxonMobil is incorporated in New Jersey.

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