An algorithm for portfolio optimization with variable transaction costs, part 2: Computational analysis

In Part 1 of this paper, we introduced a (2K+1)n-dimensional portfolio optimization problem with variable transaction costs taken into account. We presented a method for solving the (2K+1)n-dimensional problem by solving a sequence of n-dimensional optimization problems accounting for the transaction costs implicitly rather than explicitly. In Part 2, we propose a degeneracy resolving rule, present computational results comparing our method with the interior-point optimizer of Mosek, well known for its speed and efficient use of sparsity, and also address the efficiency of the new method.