Which of the following choices provide the best description of the term, "primary market"? Primary market is the term for the largest public corporations in the United States. Primary market (also called "dark pool') refers to large institutional investors who trade large positions of common stock with other large investors. Primary market refers to publicly-held corporations who are raising capital by selling newly issued common stock to investors. Primary market is a benchmark of the top 25% of US corporations whose common stock has risen the highest, based on the 30 day moving daily average of common stock