This file photo shows high-rises of the financial district in Singapore. Singapore has cleared the sale of Formula One shares for more than US$2.5 billion in one of the world's biggest flotations this... more 

This file photo shows high-rises of the financial district in Singapore. Singapore has cleared the sale of Formula One shares for more than US$2.5 billion in one of the world's biggest flotations this year, reports said on Tuesday, with pre-marketing to begin immediately less