Shares of Constellation Brands are down 20.5 percent and trading in the stock has been halted.
The U.S. Department of Justice is suing to block global beverage giant InBev's proposed purchase of Grupo Modelo – the Mexican brewer that has a joint venture with Constellation Brands to import Corona to the United States – on antitrust grounds.
Constellation Brands just released a statement saying they no longer expect the deal to close in the first quarter of 2013.
Trading in the stock was halted by automatic circuit-breakers multiple times in this morning's session.
Contellation Brands is headquatered in Victor.