Live concert with 2.76 million concurrent viewers Live concert with 3.3 million concurrent viewers YouTubers and streamers showing support for an 11-year-old Chilean child fighting brain cancer
Growths that are a result of glitches or channel mergers are not included.
This is a list of channels who once gained the most subscribers in a day.Īs a cutoff for this page, channels are only included if they gained 400,000 or more subscribers in one day.
