That put the Google-owned video giant in the No.
1 spot, ahead of Disney.
The top finish was only YouTubes second since the Media Distributor Gauge Report launched about a year ago.
The YouTube Space studios in LondonOlly Curtis/Future via Getty Images
In February, though, Disney fell to No.
(See full ranking below.)
The overall viewing upturn has been increasingly driven by older audiences, Nielsen said.
Viewing from adults 65 and over has nearly doubled in the last two years, rising 96%.
Rather, it draws from a wide array of popular creator-driven programming.
(Tune-in gained intensity in February as the Donald Trump administration began making a series of moves.)
Fox Sports 1 viewership was also up 45% compared with January, primarily due to NASCAR races.