Sorry to bump this oldish thread, but I thought this was funny and shows just how fluid stocks really are.

Today's AIAA Launchpad has a summary of how a six year old article popped up and devestated United Airline's stock in one day. There are several articles out there like this one in the New York Times.

On the same day, it was the first trading day after Boeing's commercial machinists went on strike. That means no commercial planes in Washington State are being completed or sold. Their stock went up $1.02. Go figure.