Nike is one of the most mentioned companies in the U.S. across all news items in the past 12 hours, according to Factiva data. The sneaker maker reported a drop in quarterly revenue and warned that sales could fall significantly in the current fiscal year, prompting a raft of Wall Street analysts to take a dimmer view of the company’s shares. Nike shares fall 17% to $77.36. Dow Jones & Co. owns Factiva.