Company Description: American Tower Corporation, through its subsidiaries, operates as a wireless and broadcast communications infrastructure company. It develops, owns, and operates communications sites. The company operates in two segments, Rental and Management, and Network Development Services. The Rental and Management segment leases space on its wireless communications towers to customers, including personal communications services, cellular, specialized mobile radio, WiMAX, paging, and fixed microwave. This segment also leases space on its broadcast towers to wireless service providers, and radio and television broadcast companies; and provides in-building and outdoor distributed antenna system networks. In addition, it offers management services to property owners who own rooftops that are capable of hosting wireless communications equipment. The Network Development Services segment provides tower-related services, such as site acquisition, zoning and permitting services, and structural analysis services. As of March 1, 2010, the company owned and operated approximately 27,000 communications sites in the United States, Mexico, Brazil, and India. American Tower Corporation was founded in 1995 and is headquartered in Boston, Massachusetts.

Our Analysis: The shares of American Tower Corp. 'AMT' have been in a downward trend since the start of April. Yesterday the shares of 'AMT' closed below a recently established support level on heavier than normal trading volume. This is a bearish trading signal. The shares of 'AMT' should continue to move lower and test $40.10/share, a point of downside support established on February 5th of this year. If the shares of 'AMT' close below that level, then they should continue to move lower and test $39.17/share, a point of downside support established on December 8th of last year. I see upside resistance on the shares of 'AMT' @ $41.65/share, and have set my stops accordingly @ $42.07/share.