The chart shows which categories of bonds present the biggest opportunities according to advisors. 29% of advisors chose high-yield bonds as the greatest opportunity. 24% chose investment-grade corporates. 22% chose municipal bonds. 21% chose structured products. 16% chose emerging-market sovereign debt. 10% chose ex-U.S. developed markets sovereign debt. 9% chose U.S. Treasuries. 8% chose mortgage-backed securities.