In a week of market volatility, the adtech sector was on fire this week after a down week to start April. The recovery is no surprise, as investors got a bit of good news from the Trump administration -- at least relative to what we knew a week ago.According to data provided by S&P Global Market Intelligence, shares of AppLovin (APP -4.81%) were up as much as 19.9%, Reddit (RDDT -1.42%) jumped 17%, and Spotify (SPOT -1.03%) was up 12.7%. The stocks were up 13.9%, 15.1%, and 8.4%, respectively, for the week ...