WallStSmart

American Tower Corp (AMT)vsT-Mobile US Inc (TMUS)

VS

Smart Verdict

WallStSmart Research — data-driven comparison

T-Mobile US Inc generates 737% more annual revenue ($90.53B vs $10.82B). AMT leads profitability with a 26.8% profit margin vs 11.7%. TMUS appears more attractively valued with a PEG of 0.78. AMT earns a higher WallStSmart Score of 72/100 (B).

AMT

Strong Buy

72

out of 100

Grade: B

Growth: 6.7Profit: 9.0Value: 6.0Quality: 3.8
Piotroski: 4/9Altman Z: 0.33

TMUS

Buy

62

out of 100

Grade: C+

Growth: 4.0Profit: 7.0Value: 5.3Quality: 4.0
Piotroski: 4/9Altman Z: 1.06
IV

Intrinsic Value Comparison

Multi-model valuation · Graham Formula

AMTUndervalued (+17.6%)

Margin of Safety

+17.6%

Fair Value

$219.10

Current Price

$182.71

$36.39 discount

UndervaluedFair: $219.10Overvalued
TMUSSignificantly Overvalued (-65.6%)

Margin of Safety

-65.6%

Fair Value

$134.07

Current Price

$195.50

$61.43 premium

UndervaluedFair: $134.07Overvalued

Key Strengths & Concerns

Side-by-side fundamental analysis

Key Strengths

AMT5 strengths · Avg: 9.4/10
Operating MarginProfitability
45.3%10/10

Strong operational efficiency at 45.3%

EPS GrowthGrowth
76.9%10/10

Earnings expanding 76.9% YoY

Market CapQuality
$85.12B9/10

Large-cap with strong market position

Return on EquityProfitability
29.9%9/10

Every $100 of equity generates 30 in profit

Profit MarginProfitability
26.8%9/10

Keeps 27 of every $100 in revenue as profit

TMUS4 strengths · Avg: 8.5/10
Market CapQuality
$211.57B10/10

Mega-cap, among the largest globally

PEG RatioValuation
0.788/10

Growing faster than its price suggests

Operating MarginProfitability
21.5%8/10

Strong operational efficiency at 21.5%

Free Cash FlowQuality
$4.18B8/10

Generating 4.2B in free cash flow

Areas to Watch

AMT4 concerns · Avg: 3.0/10
PEG RatioValuation
1.974/10

Expensive relative to growth rate

P/E RatioValuation
29.5x4/10

Moderate valuation

Price/BookValuation
24.2x2/10

Trading at 24.2x book value

Altman Z-ScoreHealth
0.332/10

Distress zone — elevated risk

TMUS3 concerns · Avg: 2.3/10
Debt/EquityHealth
1.993/10

Elevated debt levels

EPS GrowthGrowth
-12.0%2/10

Earnings declined 12.0%

Altman Z-ScoreHealth
1.062/10

Distress zone — elevated risk

Comparative Analysis Report

WallStSmart Research

Bull Case : AMT

The strongest argument for AMT centers on Operating Margin, EPS Growth, Market Cap. Profitability is solid with margins at 26.8% and operating margin at 45.3%.

Bull Case : TMUS

The strongest argument for TMUS centers on Market Cap, PEG Ratio, Operating Margin. Revenue growth of 10.6% demonstrates continued momentum. PEG of 0.78 suggests the stock is reasonably priced for its growth.

Bear Case : AMT

The primary concerns for AMT are PEG Ratio, P/E Ratio, Price/Book.

Bear Case : TMUS

The primary concerns for TMUS are Debt/Equity, EPS Growth, Altman Z-Score. Debt-to-equity of 1.99 is elevated, increasing financial risk.

Key Dynamics to Monitor

AMT profiles as a mature stock while TMUS is a value play — different risk/reward profiles.

AMT carries more volatility with a beta of 0.93 — expect wider price swings.

TMUS is growing revenue faster at 10.6% — sustainability is the question.

TMUS generates stronger free cash flow (4.2B), providing more financial flexibility.

Bottom Line

AMT scores higher overall (72/100 vs 62/100), backed by strong 26.8% 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.

American Tower Corp

REAL ESTATE · REIT - SPECIALTY · USA

American Tower Corporation (also referred to as American Tower or ATC) is an American real estate investment trust and an owner and operator of wireless and broadcast communications infrastructure in several countries worldwide and is headquartered in Boston, Massachusetts.

T-Mobile US Inc

COMMUNICATION SERVICES · TELECOM SERVICES · USA

T-Mobile US, Inc., doing business under the global brand name T-Mobile, is an American wireless network operator. Its headquarters are located in Bellevue, Washington, in the Seattle metropolitan area and Overland Park, Kansas, in the Kansas City metropolitan area.

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