On the heels of the Federal Reserve's first interest rate hike of 2017 and third in 15 months, some fundamentally-weighted or smart beta exchange-traded funds are receiving increased attention, good and bad.For example, low volatility ETFs have recently been losing assets while ascending to new highs, because many investors perceive these ETFs as being inversely correlated to rising Treasury yields.SPLV And USMVThat includes the popular iShares Edge MSCI Min Vol USA ETF and the PowerShares S&P 500 Low Volatility Portfolio , the two largest low volatility ETFs.USMV and SPLV “have shed a combined $1.3 billion assets. Despite the exposure differences — for example USMV has sector constraints not employed for SPLV — both offer relatively strong exposure to higher-dividend-yielding stocks relative to the S&P 500 index,” said CFRA Research in a note Monday. “As the Fed raises rates further this year, a rotation away from these 'bond proxies' may occur.”Read more