The document contains a section on the winner's curse and how it could cause Google's shares to decline sharply in the days after the offering.

The higher rating not only caused Intel's shares to skyrocket but bolstered the entire technology sector.

That caused Sotheby's shares to fall from the low $20's into the teens.

But competition and the end of the tech bubble caused Palm's shares to lose 90% of its value in just over a year.

Word of the suit caused Vonage's shares to fall 11.7 percent, to $8.48 yesterday.

The announcement caused Fisher's shares to fall as much as 16 percent.

Nevertheless, the report caused May's shares to rise $2.88, or 9.2 percent, to $34.25.

The scandal caused the parent company's shares to plunge.

That was less than analysts had expected, causing the company's shares to slide.

Of course, other factors can cause the acquiring company's shares to fall, including a deal so complex that it is difficult to evaluate.