Considering its a holding company, I am assuming that you do not want any hidden industry/ sector- specific icons. My guess is that for a holding company it is the revenues and equity value which is of importance. Also if it has a large portfolio of investments, then you would want a professional, clean, and formal look yet modern so that it doesnt look vintage. Do let me know your thoughts on the attached option. The icon on top signifies profits, a stack of multiple investments and a pyramid. Some insight or inputs will help. There are quite a few initials/monogram based designs already added by others but most are templatized or seem to show more of a real-estate related image, so i havent yet ventured into making a initials-based option. .