AMT vs EQIX: How American Tower Corporation and Equinix Compare (2026)

American Tower Corporation (NYSE: AMT), founded in 1995 and headquartered in Boston, is a real estate investment trust that owns, operates, and develops multitenant communications real estate. Its core business is leasing vertical space on wireless towers to mobile network operators, government agencies, and broadcasters under long-term contracts with annual escalators, generating 97% of 2025 revenue from property operations. Beyond towers, AMT owns CoreSite, a portfolio of 30 U.S. data centers offering colocation and interconnection services to enterprises, cloud providers, and network operators, which has become a fast-growing second revenue engine. The company manages nearly 150,000 communications sites across the Americas, Europe, Africa, and Asia-Pacific, providing global scale that smaller peers cannot easily replicate.

Full AMT guide

Equinix operates what it calls Platform Equinix: a globally distributed network of carrier-neutral, multi-tenant data centers known as IBX (International Business Exchange) facilities. Customers colocate their servers and networking gear inside these facilities and then cross-connect directly to hundreds of cloud providers, network carriers, and other enterprises within the same building, eliminating latency and simplifying hybrid IT architectures. Revenue comes primarily from colocation (cabinet space and power), interconnection (cross-connects and virtual connections via Equinix Fabric), and its xScale joint-venture program, in which Equinix builds and operates hyperscale-capacity facilities on behalf of large cloud providers. As a REIT, Equinix distributes a meaningful portion of taxable income as dividends, and its key non-GAAP metrics are Adjusted EBITDA and Adjusted Funds From Operations (AFFO). Equinix was incorporated in Delaware in 1998 and went public on Nasdaq in 2000, originally as a neutral Internet exchange point operator. It converted to REIT status in 2015 and has grown largely through acquisitions, including the landmark purchase of Switch and Data (2010), TelecityGroup (2016), and Metronode (2017), among many others. Charles Meyers served as CEO for several years and moved to Executive Chairman; Adaire Fox-Martin became CEO and President and is currently leading the company. In 2025, the company surpassed 500,000 global interconnections, which it reports as more than double the nearest competitor.

Full EQIX guide

Both fit overlapping themes, but they are not interchangeable. American Tower Corporation is best understood through its own drivers, and Equinix through its. The useful comparison is which set of drivers and risks you want exposure to.

• AMT drivers: 5G Densification and Mid-Band Upgrades; CoreSite and AI-Driven Data Center Demand.
• EQIX drivers: AI Infrastructure Demand; Interconnection Network Effects.

AMT. AMT's trailing P/E of approximately 27x is well below its own 3-year average of roughly 45x and its 10-year average of roughly 56x, reflecting both earnings normalization after a period of large one-time items and a broader re-rating of rate-sensitive REITs in a higher-for-longer interest rate environment. For tower REITs, investors typically focus on AFFO per share rather than GAAP earnings, because the latter is heavily influenced by depreciation and one-time currency gains or losses. On that basis, FY 2025 delivered high-single-digit AFFO per share growth, and management's 2026 guidance projects continued quarterly revenue in the $2.67 billion to $2.77 billion range per quarter, suggesting mid-single-digit full-year growth if realized.

EQIX. Equinix trades at a premium GAAP P/E of roughly 74x trailing earnings, which is high in absolute terms but well below the company's own 10-year historical average of around 127x, reflecting improved earnings quality as REIT depreciation rules weigh on GAAP net income. The more commonly used REIT valuation lens, P/AFFO, sits near 25x to 28x on 2025 actuals, which is also a premium to most data-center REIT peers but is supported by a consistent double-digit AFFO per share growth trajectory and 11 consecutive years of dividend increases. Management's 2026 revenue guidance of $10.1 to $10.2 billion (10 to 11% growth as-reported) and AFFO guidance of $4.16 to $4.24 billion imply the forward multiples compress meaningfully if execution continues.

Headline figures (approximate, 2026-06-27): AMT shows revenue (q1 2026) ~$2.74 billion, revenue (fy 2024, most recent full year) ~$10.13 billion, adjusted ebitda (q1 2026) ~$1.84 billion (margin ~67%); EQIX shows revenue (fy 2025) ~$9.2 billion, adjusted ebitda (fy 2025) ~$4.53 billion (~49% margin), affo (fy 2025) ~$3.76 billion ($38.33 per diluted share). A cheaper-looking multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is actually compounding.

Both share a theme, but they suit different temperaments. American Tower Corporation's case leans on 5g densification and mid-band upgrades, and Equinix's on ai infrastructure demand. A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The most immediate risk is customer concentration: in 2025, four carriers (T-Mobile at 18%, AT&T at 17%, Verizon at 14%, and Telefonica at 10%) collectively represented roughly 59% of total revenue, so any material lease dispute, consolidation event, or technology shift (such as carriers building private networks or relying on low-earth-orbit satellites) could disproportionately hurt results. For EQIX, the most prominent risk is balance-sheet leverage: total debt principal outstanding rose to approximately $21.4 billion at the end of 2025 from $17.6 billion a year earlier, primarily from new senior note issuances to fund the capital-intensive xScale and IBX expansion program, and the Debt/Equity ratio stands near 1.63x.

Pick AMT if you believe its drivers more; EQIX if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AMT and EQIX guides.

AMT and EQIX are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AMT and EQIX exposure against your real portfolio. It is not an investment adviser.