When a corporation announces its earnings for a period, the volume of transactions in its stock may

Question:

When a announces its earnings for a period, the volume of transactions in its stock may increase, but frequently that increase is not associated with significant moves in the price of its stock. How can this be explained?
Corporation
A Corporation is a legal form of business that is separate from its owner. In other words, a corporation is a business or organization formed by a group of people, and its right and liabilities separate from those of the individuals involved. It may...