The main trading hall of the Frankfurt stock exchange is the calling card of the German stock market. It serves work stations for more than 70 brokers; welcomes yearly more than 40000 visitors and is increasingly valued as an exclusive venue. Atelier Brueckner, the Stuttgart firm, was entrusted with the conception, interior design, lighting design, technical equipment improvements and ergonomics of the workplace. The design concept closely considered the various functions related to the hall. The realization of the design, resulted in a contemporary sleek appearance for the main trading hall. Its coherent room-impression emanates the Corporate Identity of the Frankfurt stock exchange. High quality materials and specific colours of blue and white (the CI-colours of the stock exchange) contribute to the consistency of the design. The visitor has the opportunity to view the trading floor from the visitor's gallery. Five circular and two semicircular trade barriers accommodate a total of 70 broker's workplaces; each including up to six screens. Here the broker can work standing as well as seated. The semicircular trade barrier underneath the DAX board, has a special function. During stock market flotations and IPOs (Initial Public Offerings), an installed light changing mode, calls attention to these events. The trade barriers appear white translucent, and convert to a blue back-light during market flotations. In addition, it is possible to adjust the contour line of the DAX board to also appear in blue. An important feature of the design is the LED-band displaying information regarding the international trade. The band is integrated into a stylised world map above the gallery, where news and guiding-indices from all continents are shown. This installation runs around the hall juxtaposed to the running stock price index, creating an impressionable room-image. The band is intended to portray a view into the world, showing the global connection, and conveying the internationality of Frankfurt's commercial industry. To understand the abstract commercial events which take place on the trading floor, the newly developed visitor's gallery offers contemporary possibilities. An autoactive space installation translates the commercial activities of the digital commercial system Xetra, into a dynamic, live graphic. 160 most important stocks, which are traded in Frankfurt are displayed on the new glass floor of the visitor gallery. Here the company's customary abbreviation and index is shown. When these stocks are traded the corresponding company lights up: Green for stocks rising, red for stocks falling (if sales came about below the present retail price).