Strategy Analytics' Mobile Media Index (MMI) tracks quarterly mobile revenue trends for the top publicly traded mobile media companies across games, advertising, video, music, and social media. The Mobile Media Index measures growth on a quarterly, trailing twelve month (TTM) and annual basis. A total of 24 publicly traded mobile media companies are included in the Mobile Media Index, including Facebook, Tencent, Yahoo! Japan, Baidu, Activision-Blizzard, and Electronic Arts, among others.