ETFs challenge another index-fund icon By: MarketWatch May 04, 2012 at 18:23 PM EDT Dimensional Fund Advisors offered specialized portfolios at a low cost. But with the rise of ETFs, no longer is DFA the exclusive purveyor of this strategy. Read More >> Related Stocks: DFA Emerging Markets Portfolio I DFA U.S. Small Cap Portfolio DFA U.S. Micro Cap Portfolio DFA U.S. Small Cap Value Portfolio FTSE EM ETF Vanguard S&P Smallcap 600 Value Ishares ETF