LONDON/SINGAPORE (Reuters) - Motor sport racing company Formula One has delayed its Singapore initial public offer worth up to $3 billion, the fifth big Asian IPO to be postponed or pulled in a week, as weak markets bring the global market for new listings to a shuddering halt.

Worldwide, money raised from stock market flotations has slumped 46 percent so far this year compared with the same period of 2011, with investors wary of the euro zone crisis, China's economic slowdown and last month's botched Facebook IPO.