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Compare · AMT vs SPG

AMT vs SPG

Side-by-side comparison of American Tower Corporation (REIT) (AMT) and Simon Property Group Inc. (SPG): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AMT and SPG operate in Real Estate Investment Trusts (Real Estate), so they compete in similar markets.
  • AMT is the larger of the two at $81.92B, about 1.2x SPG ($70.63B).
  • Over the past year, AMT is down 16.7% and SPG is up 23.7% - SPG leads by 40.4 points.
  • SPG has been more active in the news (3 items in the past 4 weeks vs 2 for AMT).
  • Both have 25 recent analyst ratings on file.
PerformanceAMT-16.73%SPG+23.68%
2025-08-25+0.00%2026-08-21
MetricAMTSPG
Company
American Tower Corporation (REIT)
Simon Property Group Inc.
Price
$175.77+0.04%
$218.32-0.69%
Market cap
$81.92B
$70.63B
1M return
+6.73%
-3.04%
1Y return
-16.73%
+23.68%
Industry
Real Estate Investment Trusts
Real Estate Investment Trusts
Exchange
NYSE
NYSE
IPO
News (4w)
2
3
Recent ratings
25
25
AMT

American Tower Corporation (REIT)

American Tower, one of the largest global REITs, is a leading independent owner, operator and developer of multitenant communications real estate with a portfolio of approximately 181,000 communications sites.

SPG

Simon Property Group Inc.

Simon is a real estate investment trust engaged in the ownership of premier shopping, dining, entertainment and mixed-use destinations and an S&P 100 company (Simon Property Group, NYSE: SPG). Our properties across North America, Europe and Asia provide community gathering places for millions of people every day and generate billions in annual sales.

Latest AMT

Latest SPG