Investors should not sell their gold in the wake of Fed Chairman Janet Yellen's testimony, says David Mazza, Head of ETF Investment Strategy at State Street Global Advisors. Mazza says the yellow metal remains an unloved asset class according to surveys, and it remains a hedge against geopolitical problems. He also says bond ETF investors should consider floating rate notes and senior loans as rates rise. Finally, Mazza advocates increasing emerging markets positions despite higher volatility.

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