Melinda Gates needs no introduction.

She has been the co-chair of The Bill & Melinda Gates Foundation for 18 years. Now, she has quietly entered the venture capital world by investing in female-led or minority-focused venture firms like Aspect VenturesFemale Founders Fund, and Defy Partners.

“I am a big believer in disruptive innovation, but it’s been incredibly disappointing to watch how few women-led businesses are getting funded,” Gates told Fortune. “Ultimately, if we want more innovation and better products, we’ve got to put more money behind women and minorities. That wasn’t happening, so I decided to step in and see what I could do to help a little bit.” View the video here.