https://www.reuters.com/article/us-activision-results/activision-blizzards-first-quarter-profit-forecast-misses-estimates-idUSKCN1Q12MO >Activision Blizzard Inc reported weaker-than-expected fourth-quarter revenue and forecast current-quarter revenue and profit below analysts' estimates on Tuesday, as it faces competition from "Fortnite" and invests more in developing its games.