Hard to say why Nintendo moves independently of the market. Earnings are at the end of this month? The Tresurary and Fed are going ot inject $50B into the credit markets at the end of October too, which should boost the US? Maybe there is news that is being leaked to select friends? Maybe everyone has changed their minds and love the new DS now? Some Shiek in Arabia saw a Wii and decided to buy stock? Ballmer has finally decided to "innovate" and just buy Nintendo to get started?