The big traders/banks have their computers on the trading floor of stock exchanges and have access to orders coming in. They act as a bookie and see what positions are held. Then they begin their attack to short or force up. The man in the street has no chance of having this information. How do you think Buffett makes his money, he is the biggest insider around. I wouldn't want to be a US banker if this gets worse, bombers are 10 a penny. Time to call a halt before it gets messy.