In both the Securities and Equties tabs in the Investment View, the displayed columns always take up (at least) the full width of the window.  You can change the width of all except the last column.  If you generally leave the KMM window very wide, then in the Investment View, then there is often a large empty space between the first columns and the last one, making it more difficult to follow.  I know I make the whole window narrower, but I'd rather not, as I'd only have to switch it back as soon as I switched to another view.  I would prefer to be able to make that last column narrower so it's content it more immediately next to the previous column.