MrBeast is buying a banking app geared toward teens

YouTube creator MrBeast (Jimmy Donaldson).

Michael M. Santiago/Getty Images

• MrBeast's company, Beast Industries, is buying the teen-focused banking app, Step.
• The CEO of Beast Industries said the company wants to help fans improve their "financial futures."
• MrBeast, YouTube's top creator, has been diversifying his business beyond media.

YouTube's top creator, MrBeast, is making a leap into fintech by buying a consumer banking app geared toward teens.

His company...