Twitter Inc. head of corporate communications Kristin Binns is heading to Activision Blizzard Inc. Activision said Thursday. Activision was up more than 1% in late afternoon trading to $77.79. Binns will serve as Activision's chief communications officer and senior vice president and will oversee global communications. Binns will start in July after working at Twitter since September, 2016. Activision stock is up 23% this year, as the S&P 500 index gained 3.8%.