(Telecompaper) Naspers has listed its internet holding company Prosus on the Amsterdam stock market, and the shares rose an initial 30 percent from the reference price. The shares in the new company were spun off to existing Naspers shareholders and received an initial reference price of EUR 58.70. They opened on 11 September at EUR 76 and finished the first day of trading at EUR 74.19. This gives the company a market capitalisation of over EUR 120 billion.