Bonds of New York and Michigan had the best performance over the past year compared with the average yield of AAA rated 10-year securities, the data shows. Yields on New York’s securities narrowed 9 basis points to 2.00 percent while Michigan’s declined 5 basis points to 2.27 percent.
Puerto Rico and New Jersey handed investors the worst results. The yield gap on Puerto Rico bonds widened 94 basis points to 9.94 percent and New Jersey’s rose 20 basis points to 2.67 percent.