Vivid is a mobile banking app and a commission-free brokerage company that allows you to trade on European and US stocks (with fractional shares), and ETFs. The investment side is only available in France, Germany, Italy, Spain, and Portugal.Vivid is a mobile banking app and a commission-free brokerage company that allows you to trade on European and US stocks (with fractional shares), and ETFs. The investment side is only available in France, Germany, Italy, Spain, and Portugal.