In 2002, Chau cofounded Horizons Ventures with Debbie Chang, who is the only person named as a director. Li Ka-shing only became an investor in the firm two years after its founding, but his backing as the richest man in Asia has helped the firm stand out above the crowd. Under Chau, Horizons Ventures has invested over US$470 million in more than 80 tech companies, in search of "disruptive" tech entrepreneurs. Its primary investments have been in the United States and Israel, with at least 28 investments in each country respectively since 2006.