Blue-chip stocks have the size, financial strength, market position, and prospects to help an investor's personal portfolio without a lot of drama.

American Tower (NYSE: AMT) is such a company. This real estate investment trust (REIT) is the world's largest private provider of telecommunications infrastructure, with a portfolio of nearly 226,000 communications sites worldwide, including about 42,000 in the U.S. and Canada.

This REIT grew by building and leasing mission-critical cell-tower space to mobile carriers and now thousands of other customers. Its expansion into small-cell technology and data centers should see it continue as a critical and profitable player in the rollout of 5G and other connective digital technologies for years to come -- with the safety of a blue chip added in.

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Source Fool.com