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Allstate Insurance is the largest publicly held personal lines insurer in the United States. Allstate was founded in 1931 as part of Sears, Roebuck & Co.
Allstate became a publicly traded company in 1993. At the time, its initial public offering was the largest in U.S. history. On June 30 1995, it became a totally independent company after Sears divested its remaining shares to Sears stockholders.