Fidelity, which entered the ETF arena in earnest last October with the introduction of 10 sector ETFs, now has over $1 billion in ETF assets under management and at least four of its sector funds have over $100 million in AUM.

Illinois-based First Trust, the issuer of well-known ETF such as the First Trust Dow Jones Internet Index Fund (NYSEArca: FDN) and the First Trust NYSE Arca Biotechnology Index Fund (NYSEArca: FBT) had $23.9 billion in ETF assets at the end of the first quarter and $27.7 billion as of June 30, making it the sixth-largest U.S. ETF issuer.

iShares MSCI Emerging Markets ETF

Tom Lydon’s clients own shares of EEM and EMB.