Portfolio Optimization-III Risk Free Assets

Let’s introduce risk free assets in our portfolio. Risk free assets are those which have zero risk and very small return like govt. bond.

  • We will create a portfolio consisting both of risky and risk free assets:

  • Modifying the weight function that we have created in portfolio optimization-I post:

  • Using this function for our basket of assets:

    Here, weights for 5 risky and 1 risk free assets are getting displayed. It includes “short” position stocks as well.

  • Now using portfolio.optim function present in “tseries” package (“shorts” are allowed):

    Above 5 weights are for risky assets and sum NOT= 1. Therefore weight of risk-free asset = 1-0.4242=0.5758

  • When “shorts” are not allowed:

    Above 5 weights are for risky assets and sum NOT= 1. Therefore weight of risk-free asset = 1-5909=0.4091

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Roma

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