YouTube’s mobile users averaged 40 minutes per session during Q2, which represents a 50 percent increase year over year while ultimately helping the Mountain View, Calif.-based player beat Wall Street expectations. The number of advertisers rose 40 percent year over year on the video platform, while the average spend of YouTube’s top 100 advertisers rose 60 percent.
Source: YouTube’s Top Advertisers Increased Spending by 60% in Q2, Google Reports | Adweek