iShares are units of families of exchange-traded funds (ETFs) managed by Barclays Global Investors. The first iShares were known as WEBS but were since rebranded. Each iShares fund tracks a bond or stock market index. The following stock exchanges list iShares funds: American Stock Exchange, New York Stock Exchange, Toronto Stock Exchange, Australian Securities Exchange and several European and Asian stock exchanges. According to Morgan Stanley, sponsor of several iShare funds, iShares's the lar… (More on Ishares)