Boeing and the New York Stock Exchange have pulled out of the East Asia Economic Summit to be held in Hong Kong at the end of the month. Philip Condit, chairman of the Boeing Company, and Richard Grasso, chairman of the New York Stock Exchange, cancelled their trips to the SAR, said a spokeswoman for the summit's organiser, the World Economic Forum. 'For the New York Stock Exchange, you know what happened last month, so it's obvious he has to stay there. As for Boeing, I can't speak on their behalf,' she said. Mr Condit and Mr Grasso were originally co-chairs of the summit, which will be attended by Chief Executive Tung Chee-hwa, Philippine President Gloria Macapagal-Arroyo, and World Trade Organisation director-general designate Supachai Panitchpakdi. The forum has had to change its Web page regarding the event 'in these times of great uncertainty'. It said the summit would address 'the multiple regional and global challenges confronting our societies', as well as the way forward after the US terror attacks. Invest Hong Kong director-general Mike Rowse said it would also tackle the direct impact of the attacks on the world economy, particularly Asia's. Robert Broadfoot, managing director of the Political and Economic Risk Consultancy, said it was not surprising the pair had pulled out. 'If you consider other meetings they also cancelled, such as the World Bank and IMF [International Monetary Fund] conferences in Washington last week, you won't put too much importance on this meeting,' he said.