Sub-Sahara Africa Stocks: KenGen, United Bank for Africa Move Bloomberg In Mauritius, the SEMDEX Index (SEMDEX) rose for a second day, adding 0.1 percent to 1797.63 in Port Louis. The Nigerian Stock Exchange All-Share Index (NGSEINDX) was little changed at 22109.76 as of 2:30 pm in Lagos, according to data compiled by ...