The Stock Exchange of Mauritius (SEM) The Stock Exchange of Mauritius is the principal stock exchange of the island country of Mauritius. The market is located in Port Louis and was founded in 1988. The name of the exchange is abbreviated to "SEM".The SEM's "Official Market" has three market indices: SEMDEX, SEMTRI and SEM-7. The SEM's "Development and Enterprise Market" has two indices: DEMEX and DEMTRI.
