對沖基金又令港股下跌564點,為何會這樣？

It is because the funds make room for their speculations in coming years. If there is only upward and no downward, funds can only earn little about shares and index.

It is a good excuse on a high PE ratio of the whole market. And the accumulated raise is very high within this year. Funds will earn very less in 2007 if the index has not down turn in this moment. And the high oil price is another excuse to affect the global economy. Funds will announce some announcement about profits affection to influence the whole stock market.