Fixed-Income High-Yield ETFs Hit as Investors Flock to Treasuries John Spence August 9, 2011 as iShares S&P National AMT-Free Municipal Bond PowerShares Preferred Portfolio (NYSEArca: PGX) « Previous Page RELATED TOPICSBond ETFsHigh-Yield BondsHYGJNKMUBMunicipal BondsPGX