BlackRock's Lowest-Cost ETFs Devour Almost Half of U.S. Flows

A whopping 44 percent of all flows into U.S.-listed ETFs this year has gone to four low-cost funds from BlackRock Inc.

At the top is the iShares Core MSCI EAFE ETF, known by its ticker IEFA, which has taken in $13.7 billion since Jan. 1, according to data compiled by Bloomberg. Not far behind is the iShares Core S&P 500 ETF, or IVV, which has swelled by $12.2 billion. The iShares Core MSCI Emerging Markets ETF (IEMG) and the iShares Core U.S. Aggregate Bond ETF (AGG) also make the cut, taking in $5.1 billion and $2.4 billion respectively, the data show.