Comparison

AMERICAN TOWER CORP /MA/ (AMT) vs REALTY INCOME CORP (O)

The same filed metrics for both companies, side by side.

What each names as a risk in its own annual report, how each is priced against its own history, and the tracked managers whose latest 13F reports a position in both.

Financials

AMT

AMERICAN TOWER CORP /MA/

REIT—Specialty

Revenue, FY25: $10.64B
Net income: $2.63B
Operating cash flow: $5.46B
Free cash flow: -
Net margin: 24.69%
Operating margin: 45.52%
Gross margin: -

REALTY INCOME CORP

REIT—Retail

Revenue, FY25: $5.75B
Net income: $1.06B
Operating cash flow: $3.99B
Free cash flow: -
Net margin: 18.41%
Operating margin: -
Gross margin: -

Head-to-head

Filed growth, quality and valuation, read against each company’s own history rather than against the other side.

Metric	AMT	O
Revenue growth, latest filed year	+5.11%	+9.07%
Piotroski F-score	6 of 8	5 of 6
P/E against its own history	56.53% below	-

What each says it is exposed to

From Item 1A of each company’s most recent 10-K.

AMT

Debt covenants
Inflation
Currency moves
Tax
Cybersecurity
Goodwill impairment

And 13 more.

Debt covenants
Cybersecurity
Inflation
Real estate
Climate
Litigation

And 13 more.

Tracked managers holding both

Joel Greenblatt Gotham Asset Management 0.10% · 0.03%

Updated Sep 14, 2026 · the newer of the two companies' filings