Business InsiderTony Fadell may no longer be the CEO of Nest, the company he founded that was folded into Google's Alphabet holding company, but he won't be idle. In addition to staying on the board at Alphabet, Fadell told Bloomberg on Friday that he's been "secretively" investing in companies for the last decade, and has had some involvement in more than 100 other startups. As he put it: Over the past eight to 10 years I’ve been investing in companies very secretively.