Saxo Bank is an investment bank specialized in online trading and investment. It is a global and leading online broker, offering access to most asset classes worldwide, as well as more innovative products like managed investment portfolios, and trading strategies from professional traders.Saxo Bank is an investment bank specialized in online trading and investment. It is a global and leading online broker, offering access to most asset classes worldwide, as well as more innovative products like managed investment portfolios, and trading strategies from professional traders.