Moncler's were the best-performing stock in Milan's FTSE MIB - the index of the 40 most-traded stock classes on the exchange - on Sept. 15, with a 3.8 percent gain, following rumors of a possible investment in the Italian luxury clothing brand by Fosun International. Fosun, founded in 1992 by Guo Guangchang, has stakes in various sectors including fashion. In 2013, the Shanghai-based conglomerate and investment company acquired a 35 percent stake in Caruso, the Italian brand of men's tailored clothing. In June this year Fosun acquired Iro, the French fashion brand, and the Chinese firm also owns a majority stake in Tom Tailor, the German fashion brand. In a TV interview, Guo Guangchang, the current president of the conglomerate and one of China's richest men, has recently manifested his growing interest in investing in the fashion industry.