The sample period covers a few economic crises, which resulted in downturns in stock market returns and had a significant impact onthe demand for bonds. These economic crises may cause structural changes in the long-term stock-bond correlation trends. From Fig. 2,we can see that the long-term correlation is below the short-term correlation before 1997, but the long-term component is significantlyabove the short-term correlation after 2007, which means here are structural changes in m.We use the well-known test of Bai and Perron (2003) to detect multiple structural breakpoints in the stock-bond correlation. First, weestimate the following model for the long-run correlation: