For example you buy longSPDR Barclays High Yield Bond ( JNK ), which carries a 0.4% expense ratio and currently yields 6.72%, and short sell iShares Barclays 20+ Year Treasury Bond ( TLT ), with a 0.15% expense ratio. First Trust Advisors has added a new menu item for investors starving for dividend income in an era of unpalatable interest rates. If the economy slumps, inflation declines and investors pile into risk-free Treasurys, the fund will "get squeezed on the short side," says Neil Leeson, ETF strategist at Ned Davis Research in Venice, Fla.