Isn't Sept 30th the last day to ask for your cash and you can do so for weeks in advance. If so I am sure the Greenwich Hedgies have already prepared for this.
I don't trade stock i'm strictly a fx man and i'm on an ultra short term basis. But i love studying makrets in general for fun.
But what about this: http://news.alibaba.com/article/detail/finance/100008354-1-look-out-bloody-tuesday%3F.html