American Tower Stock Rises 18.7% YTD: Is it Too Late to Buy?

American Tower (AMT) has outperformed its peers, rising 18.7% YTD, driven by strategic portfolio repositioning towards developed markets and investments in data centers to capitalize on AI-driven demand; the company is directing over 75% of its $1.5 billion discretionary 2025 spending to developed markets and expects continued elevated churn through 2025 due to the Sprint-T-Mobile merger, though analysts maintain a positive outlook with an average brokerage recommendation of 1.40.

Analysis

American Tower Corporation (AMT) has demonstrated significant market outperformance year-to-date, with its stock rallying 18.7% to $217.70, surpassing its industry peers, including SBA Communications, and the S&P 500. This performance is underpinned by strategic portfolio repositioning, focusing on developed markets where over 75% of its $1.5 billion discretionary spending for 2025 is allocated, and divesting non-core assets in developing regions to enhance operational efficiency and returns. A key growth driver is the expansion into data centers, with a planned investment exceeding $600 million in 2025 to capitalize on AI-driven demand; this segment contributed $244 million to property revenues in Q1 2025, an 8.4% year-over-year increase. Despite better-than-expected Q1 2025 results and solid year-over-year organic tenant billings growth of 4.7% (total tenant billings up 5.2%), the company faces headwinds from the T-Mobile/Sprint merger, which is expected to cause elevated churn in its U.S. & Canada property segment through 2025, and anticipates organic tenant billings growth below 4% for the next two quarters before a projected recovery to over 5.5% in Q4 2025. AMT maintains robust liquidity of $11.7 billion as of March 31, 2025, achieved its net leverage target of 5x EBITDA in Q1 2025, and resumed a mid-single-digit dividend growth rate of 4.6% in 2025. However, the stock trades at a forward 12-month price-to-FFO of 20.85x, a premium to the REIT industry average of 15.73x and its own one-year median of 20.58x, alongside persistent risks from elevated interest rates potentially impacting financing costs and the relative attractiveness of REITs.

Key Decisions for Investors

• Investors should acknowledge American Tower's strong operational execution, strategic shift towards AI-driven data center growth, and focus on developed markets, which supports its positive long-term outlook.
• Given the stock's current valuation premium (20.85x forward P/FFO) and near-term headwinds from merger-related churn and potential interest rate pressures, new investors might consider waiting for a more favorable entry point or carefully weigh the growth prospects against the current price.
• Existing shareholders may find it prudent to hold their positions, benefiting from resumed dividend growth and the company's focus on high-quality assets, while closely monitoring the progression of tenant billings growth and the impact of interest rates.