Marginal Utility interaction

In [14]: mu = p.calc_marginal_utility(rt=(0.5/252))

In [15]: mu
Out[15]:
matrix([[ 0.33187421],
        [-0.26333191],
        [-0.08410486],
        [ 0.04096964],
        [-0.09695785]])

In [16]: p.symbols
Out[16]: ['AAPL', 'GNW', 'GT', 'KO', 'MMM']