T-Series has held the title of most-viewed YouTube channel since February 2017, and PewDiePie had been the most-subscribed YouTube channel since August 2013. PewDiePie vs T-Series was an online rivalry between two YouTube channels, PewDiePie (run by Felix Kjellberg) and T-Series (run by an Indian record company of the same name) for the title of the most-subscribed YouTube channel. T-Series overtook PewDiePie as the most-subscribed YouTube channel, becoming the first YouTube channel to reach 100 million subscribers
