A very common theme with newer traders is always expecting our market to follow the US. They are always looking to see what the US did last night. This is obviously understandable as it's the big money. and the Media which are completely clueless pump this line all the time. And we do to a large degree follow. BUT many times the Asian markets leads move not follows.
You also have to look at what our market did the day before. We had a huge day on Monday. It was almost certain the ASX would open down after such a move. And funny the US has just opened down who leads who?