Citi upgrades Activision-Blizzard, says it's time to buy the dip in the video game stock

In this photo illustration an Activision Blizzard logo seen displayed on a smartphone.
Igor Golovniov | SOPA Images | LightRocket via Getty Images

A rough stretch for Activision Blizzard's stock has created a chance for investors to buy low, according to Citigroup.