What is the optimal maturity for bonds in a given risk/non-risk portfolio?
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The paper analyzes whether there is an optimal maturity for bonds given a set stock/bond portfolio. Mean-variance optimization has been used to combine a portfolio consisting of a given asset allocation of stocks and a dynamic proportion in bonds that gives the highest estimated return for the lowest risk, by changing the maturity of the bonds. The paper uses data for the Norwegian All-share index, and short-term and long-term Norwegian government bonds. The data was divided into three parts; total: 1994-2013, period 1: 1994-2003, and period 2: 2004-2013. The optimal portfolio weights differ from each period, but with similar trend, the portfolio consisted of the obligatory All-Share index and a combination between 3-month, 3-year and 5-year government bonds. Generally, the higher the weight proportion on the risky asset, the portfolio will be better off investing the remaining allocation on long-term government bonds. This was the case for all periods where the risky assets (stocks) had the portfolio majority. For portfolios with a lower risk proportion, it was more unclear, as they are very sensitive to changes in correlation amongst stocks and bonds.
Master's thesis in Finance