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American Tower owns and operates more than 220,000 cell towers throughout the us, Asia, Latin America, Europe, and Africa. It also owns and/or operates 28 data centers in 10 us markets after acquiring CoreSite. On its towers, the company has a very concentrated customer base, with most revenue in each market being generated by just the top few mobile carriers. The company operates more than 40,000 towers in the us, which accounted for almost half of the company's total revenue in 2023. Outside the us, American Tower operates over 75,000 towers in India, almost 50,000 towers in Latin America (dominated by Brazil), 30,000 towers in Europe, and nearly 25,000 towers in Africa. American Tower operates as an REIT.
3M, a multinational conglomerate founded in 1902, sells tens of thousands of products ranging from sponges to respirators. The firm is well known for its extensive research and development capabilities, and it is a pioneer in inventing new use cases for its proprietary technologies. 3M is organized across three business segments: safety and industrial (representing around 44% of revenue), transportation and electronics (36%), and consumer (20%). The firm recently spun off its healthcare business, now known as Solventum. Nearly half of 3M's revenue comes from outside the Americas.