At least some companies are doing business.
Wrigley's sale to Mars marks the end of independence for the maker of Juicy Fruit gum and Life Savers candies, which was founded in 1891 and whose shares have been traded on the New York Stock Exchange since 1923.
Mars, known for M&M's, Snickers and other candies, was founded in 1911 and is privately held.
Big wheels were involved.
Warren Buffett helped to finance the deal.
Mars said other financing would be provided by Goldman Sachs Group Inc and JPMorgan Chase & Co.