ETFs
As of November 2012, the ETF marketplace was valued at $1.3 trillion (vs. $10 trillion invested in mutual funds). iShares (BlackRock) remains the largest player with 41% of the marketplace, down from 60% in 2007. Next to BlackRock, the next two largest ETF sponsors are State Street (25% market share) and Vanguard (18% market share). There are over 1,500 ETFs, and almost all of them are passively managed.