> But very often they can't do the optimal prices Are there any reasons why a centralized marketplace are worth in price discovery? > eg stock not listed on n

> But very often they can't do the optimal prices Are there any reasons why a centralized marketplace are worth in price discovery? > eg stock not listed on nasdaq I guess if a stock is not listed on Nasdaq it either listed somewhere else or there are some (probably reasonable) legal restrictions that prevent it from being listed.