(Bloomberg) -- Bloomberg’s Joseph Ciolli says “investors are taking their fascination with low-volatility stocks to new heights” as assets in the PowerShares S&P 500 Low Volatility fund and the iShares Edge MSCI Minimum Volatility USA ETF reached a combined $20 billion this month (tickers: SPLV and USMV). This is a daily ETF podcast from Bloomberg’s Catherine Cowdery.