Original sentence: , pension funds, insurance companies, mutual funds, investor groups, and banks).Over time, markets have become more "institutionalized":  buyers and sellers are largely institutions (e.The character of markets around the world varies, for example with the majority of the shares in the Japanese market being held by financial companies and industrial corporations, compared with the broader ownership of stock by individuals in the USA or the UK.The rise of the institutional investor has brought with it an increase of professional diligence which has tended to regulate the market
Edited sentence: The character of markets around the world varies, for example with the majority of the shares in the Japanese market being closely held (by financial companies and industrial corporations) compared with the structures of ownership in the USA or the UK.These days markets have generally become "institutionalized"; that is, buyers and sellers are largely institutions whether pension funds, insurance companies, mutual funds or banks.This rise of the institutional investor has brought growing professionalism to all aspects of the markets