Do you understand how the market operates? If someone wanted to buy 20 million shares of any stock they would either bid for the shares or continually take offers until their order was complete. The firm receiving the order would not go to another firm offering shares and buy them for their customer. That might have occurred in the "dark ages". It is possible that a "cross" could take place if the firm receiving the order was able to find a interested seller. If they took the offer themselves and then sold the shares to their customer at a higher price they would be in a lot of trouble. As I stated, in a prior post, there are no normal circumstances in today's market where the 40 million shares that traded in CGNH, so far this year, would actually be 20 million shares.