Sprint stock exploded more than 50% higher in after-hours trading on February 10, 2020, after rumors circulated that the judge will approve the T-Mobile and Sprint merger.

The rumor is that the Judge will approve the Spring, T-Mobile merger. The rumor appears to be coming from The New York Times. Source: https://www.nytimes.com/2020/02/10/business/media/sprint-tmobile-merger.html

On February 1, 2020, Nicholas Jasinski wrote in Barron’s that T-Mobile (TMUS) and Sprint (S) have spent the better part of two years in Wall Street purgatory as they try to push their merger through a regulatory maze. If T-Mobile is allowed to acquire its smaller rival, greater scale, new wireless spectrum holdings, and cost synergies would position the company to succeed in the 5G era. Source: https://www.barrons.com/articles/t-mobile-stock-is-a-winner-sprint-merger-or-not-51580315155?mod=past_editions

finviz dynamic chart for  s