The document discusses three popular energy drink brands: Red Bull, Monster, and Rockstar. It provides details on their history, target markets, marketing strategies, and market share. Red Bull is the longest-established brand and current market leader with around 50% share. Monster has around 18% share and focuses its marketing on event sponsorships. Rockstar, which was founded most recently in 2001, has around 14% share and targets a rock music lifestyle image.