iShares
iShares is Barclay's (Barclay's Global Investors "BGI") brand of ETFs. In 2009 there were approximately 350 iShares trading with around $300 billion under management. Barclay has put out a number of iShares that follow many of the major indexes around the world including the Nasdaq, NYSE, Dow Jones, and Standard & Poor's. All of these particular ETFs trade on the major exchanges in the U.S. just like normal stocks.