The subsidiary of the Stuttgart Stock Exchange, Sowa Labs, has announced a new smartphone application for trading in crypto currencies. The app called "Bison" is due to go on the market in September. After the announcement in April, a list of crypto currencies that can be traded on the app was published.
Source: https://www.btc-echo.de/die-boerse-stuttgart-plant-einstieg-ins-krypto-geschaeft/