Because ETFs trade like stocks on the exchange, they are easy to buy and sell, and make it easy to add exposure to commodities and currencies. (bestratesin.com)
More than 40 % of stocks on the exchange are «frozen», unable to trade. (themortgagereports.com)
As the prices of the listed stocks on an exchange change on a daily basis, so does the value of the index. (olssoncapital.com)