(Harvest) Investors are demonstrating caution midway through 2018 by taking steps to help insulate their portfolios. That’s understandable on the heels of a nine-year bull market in U.S. stocks, given renewed volatility, uncertainty surrounding global trade policies and steadily rising interest rates. Rather than sit idle in cash, investment grade corporate bonds may offer a mix of stability and income to investors seeking to navigate the current market environment. Investment grade corporate bonds represent something of a middle ground for investors between riskier equities and perceived safe haven assets like Treasury bonds.