Olsen Ltd is an asset management and econometrics company, founded in 1985 (successor of Olsen & Associates). During the past 30 years, Olsen has developed its own technologies for collecting, filtering financial data, inaugurating what was one of the world’s largest repositories of research-quality, tick-by-tick FX data. In 1996, Olsen has launched OANDA, an Internet market maker in foreign exchange, the first trading platform with second-by-second interest payments, since then becoming a leading provider of currency-related tools and services. Olsen has pioneered high frequency finance, a new discipline with a bottom up approach to economic and financial modelling; the team published “Introduction to High Frequency Finance” (Olsen et. al. 2001), a standard textbook used by quantitative hedge funds.