SU vs AMT Comparison

Suncor Energy Inc is an integrated energy company. The company's operations span the full energy value chain, including oil sands mining and in situ operations, upgrading, offshore production, petroleum refining in Canada and the U.S., marketing and trading, and nationwide PetroCanada retail and wholesale networks delivering reliable energy that fuels economic growth and meets the needs of customers across Canada and globally. It also conducts energy trading activities focused principally on the marketing and trading of crude oil, natural gas, byproducts, refined products, & power. The company's operating segments include Oil Sands, Exploration & Production, Refining & Marketing (R&M), & Corporate & eliminations. Geographically, the company generates a majority of its revenue from Canada.

American Tower owns and operates about 150,000 wireless towers throughout the US, Asia, Latin America, Europe, and Africa. It also owns and/or operates 30 data centers in 11 US markets through its CoreSite segment. The company's customer base in the tower business is very concentrated, with most revenue in each market generated by the top three or four mobile carriers. The company operates 42,000 towers in the US, which accounted for about half of total revenue in 2025. Outside the US, American Tower operates about 47,000 towers in Latin America (dominated by Brazil), 33,000 towers in Europe, and 28,000 towers in Africa. American Tower operates as a REIT.