SoftBank to invest $1 billion in Korean e-commerce site Coupang

Japanese telecoms group SoftBank Corp is investing $1 billion in South Korean online retailer Coupang as part of a plan to step up its overseas expansion and as it struggles to turn around U.S. carrier Sprint which it bought in 2013. SoftBank has been turning to overseas deals for growth amid a lackluster Japanese economy and shrinking demographics. The latest move comes two days after SoftBank said it had increased its controlling stake in Supercell, the Finnish mobile games maker best known fo