Bitcoin pops after Square says it's letting some app users buy and sell the cryptocurrency

Bitcoin was on a tear Wednesday after mobile payments company Square confirmed it was letting some people buy and sell bitcoin on its Cash app. 
Bitcoin was trading  at $7,284, up more than 10%, at 5:18 p.m. ET. Square, on the other hand, ended the trading day up 2.3%.Square, the mobile payments firm, is running a trial that allows some users of its Cash platform to buy and sell bitcoin. 
The news, which was reported by TechCrunch, sent Square's stock to an all-tim