Nine-year-old Ryan Kaji shot to fame opening toys in YouTube videos on his popular channel “Ryan’s World,” spawning a global kids-entertainment franchise across TV shows, streaming channels ...

This 9-year-old made $29.5 million on YouTube last year. And now his family is focused on building an even bigger business.

If you have kids and they watch YouTube, chances are you know who Ryan Kaji is. With nearly 33 million subscribers, he's become the center of a multi-million dollar business ...