There are in fact places where the exchange processes trades once per hour. They are called "Call markets". Their disadvantage is trades only take place once pe

There are in fact places where the exchange processes trades once per hour. They are called "Call markets". Their disadvantage is trades only take place once per hour. http://www.investopedia.com/exam-guide/cfa-level-1/securities-markets/exchange-market-structure.asp#axzz2JabRkJbr http://www.investopedia.com/exam-guide/cfa-level-1/securitie...