leave money on the table
v. phr.— «The ideal offering, investment bankers say, is one that rises to a small premium. A small price rise presumably gives the initial investors confidence in the company, and also confirms the sagacity of the corporate officers and underwriters involved in setting the offering price. The company thus does not feel that it left “money on the table.” By that criteria, the Genentech offering was not successful.» —“A ‘Hot’ Offering Retrospective” by Karen W. Arenson New York Times Dec. 30, 1980. (source: Double-Tongued Dictionary)