Kmart, sometimes styled as K-Mart, is a chain of discount stores headquartered in the United States. The chain acquired Sears in 2005, forming a new corporation under the name Sears Holdings Corporation. The company was founded in 1962 and is the third largest discount store chain in the world, behind Walmart and Target, with stores in the United States, Puerto Rico, the U.S. Virgin Islands, and Guam (which houses the world's largest Kmart). As of January 29, 2011, Kmart operated a total of 1,307 (6 closing by early 2011) Kmart stores across 49 states, Guam, Puerto Rico, and the U.S. Virgin Islands. This store count included 1,278 discount stores, averaging 93,000 sq ft (8,600 m2), and 29 Super Centers, averaging 169,000 sq ft (15,700 m2).
Kmart became known for its "Blue Light Specials." They occurred at surprise moments when a store worker would light up a mobile police light and offer a discount in a specific department of the store. At the height of Kmart's popularity, the phrase "attention Kmart shoppers" also entered into the American pop psyche, appearing in films and other media such as Troop Beverly Hills, Six Days Seven Nights, Rain Man, Beetlejuice, and Dawn of the Dead.
Kmart's world headquarters was located in Troy, Michigan, but since the purchase of Sears, has been relocated to Hoffman Estates, Illinois. Kmart also exists in Australia and New Zealand (see Kmart Australia), although it now has no relation to the American stores except in name, after U.S. equity in the Australian business was purchased in the late 1970s.
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