WallStSmart

Diamondback Energy Inc (FANG)vsRiley Exploration Permian Inc (REPX)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

Diamondback Energy Inc generates 3258% more annual revenue ($16.25B vs $483.86M). REPX leads profitability with a 24.5% profit margin vs 9.0%. REPX appears more attractively valued with a PEG of 2.84. REPX earns a higher WallStSmart Score of 82/100 (A-).

FANG

Strong Buy

69

out of 100

Grade: B-

Growth: 9.3Profit: 6.0Value: 5.3Quality: 4.5
Piotroski: 2/9Altman Z: 1.28

REPX

Exceptional Buy

82

out of 100

Grade: A-

Growth: 8.7Profit: 8.5Value: 7.3Quality: 6.0
Piotroski: 4/9Altman Z: 2.05
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

FANGUndervalued (+47.0%)

Margin of Safety

+47.0%

Fair Value

$318.64

Current Price

$204.97

$113.67 discount

UndervaluedFair: $318.64Overvalued
REPXUndervalued (+40.8%)

Margin of Safety

+40.8%

Fair Value

$45.17

Current Price

$43.51

$1.66 discount

UndervaluedFair: $45.17Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

FANG6 strengths · Avg: 9.2/10
Operating MarginProfitability
48.5%10/10

Strong operational efficiency at 48.5%

Revenue GrowthGrowth
52.5%10/10

Revenue surging 52.5% year-over-year

EPS GrowthGrowth
179.5%10/10

Earnings expanding 179.5% YoY

Market CapQuality
$57.40B9/10

Large-cap with strong market position

Price/BookValuation
1.5x8/10

Reasonable price relative to book value

Free Cash FlowQuality
$2.59B8/10

Generating 2.6B in free cash flow

REPX6 strengths · Avg: 9.5/10
P/E RatioValuation
7.5x10/10

Attractively priced relative to earnings

Operating MarginProfitability
52.6%10/10

Strong operational efficiency at 52.6%

Revenue GrowthGrowth
94.2%10/10

Revenue surging 94.2% year-over-year

EPS GrowthGrowth
185.4%10/10

Earnings expanding 185.4% YoY

Profit MarginProfitability
24.5%9/10

Keeps 25 of every $100 in revenue as profit

Price/BookValuation
1.5x8/10

Reasonable price relative to book value

Areas to Watch

FANG4 concerns · Avg: 3.0/10
P/E RatioValuation
39.0x4/10

Premium valuation, high expectations priced in

Return on EquityProfitability
4.2%3/10

ROE of 4.2% — below average capital efficiency

Piotroski F-ScoreQuality
2/93/10

Weak financial health signals

PEG RatioValuation
25.242/10

Expensive relative to growth rate

REPX3 concerns · Avg: 2.3/10
Market CapQuality
$909.71M3/10

Smaller company, higher risk/reward

PEG RatioValuation
2.842/10

Expensive relative to growth rate

Free Cash FlowQuality
$-4.79M2/10

Negative free cash flow — burning cash

Comparative Analysis Report

WallStSmart Research

Bull Case : FANG

The strongest argument for FANG centers on Operating Margin, Revenue Growth, EPS Growth. Revenue growth of 52.5% demonstrates continued momentum.

Bull Case : REPX

The strongest argument for REPX centers on P/E Ratio, Operating Margin, Revenue Growth. Profitability is solid with margins at 24.5% and operating margin at 52.6%. Revenue growth of 94.2% demonstrates continued momentum.

Bear Case : FANG

The primary concerns for FANG are P/E Ratio, Return on Equity, Piotroski F-Score.

Bear Case : REPX

The primary concerns for REPX are Market Cap, PEG Ratio, Free Cash Flow.

Key Dynamics to Monitor

FANG profiles as a hypergrowth stock while REPX is a growth play — different risk/reward profiles.

REPX carries more volatility with a beta of 0.95 — expect wider price swings.

REPX is growing revenue faster at 94.2% — sustainability is the question.

FANG generates stronger free cash flow (2.6B), providing more financial flexibility.

Bottom Line

REPX scores higher overall (82/100 vs 69/100), backed by strong 24.5% margins and 94.2% revenue growth. FANG offers better value entry with a 47.0% margin of safety. 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.

Diamondback Energy Inc

ENERGY · OIL & GAS E&P · USA

Diamondback Energy is a company engaged in hydrocarbon exploration and headquartered in Midland, Texas.

Riley Exploration Permian Inc

ENERGY · OIL & GAS E&P · USA

Riley Exploration Permian, Inc., an independent oil and natural gas company, is engaged in the acquisition, exploration, development and production of oil, natural gas and natural gas liquids primarily in the Permian Basin. The company is headquartered in Oklahoma City, Oklahoma.

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