AT&S was initially listed on the Neuer Markt segment of the Frankfurt Stock Exchange in July 1999. In spring 2008, AT&S switched to its home exchange in Vienna, where the share has been listed in the prime market segment since May 20, 2008. At the same time, an application was filed for the delisting from the Frankfurt Stock Exchange and withdrawal from admission to trading of the AT&S share on the Regulated Market (Prime Standard). The delisting became effective on Sunday, September 14, 2008. Hence, the last trading day of the AT&S share on the Frankfurt Stock Exchange was Friday, September 12, 2008. Since Monday, September 15, 2008, the AT&S share has been listed exclusively on the Vienna Stock Exchange.