Some professional bond investors believe investors should consider corporate credit and high-yield over everything else and shorter duration over long duration exposure. Investors can combine non-correlating assets to mitigate risk in an income-focused portfolio.

Although SJNK is lower by about half a percent this year, the ETF resides just 2% below its 52-week high, which was achieved late last year.

SJNK, which is almost six and a half years old, charges 0.40% per year, or $40 on a $10,000 investment.

For more trends in fixed income, visit the Fixed Income Channel.