I've been looking at this repo for a while and got confused by the below comment in "_def tangencyportfolio",
# exp_rets*x >= 1
I'm wondering why it should be the case, as I can only think about the expected return of the portfolio should be larger than risk free rate and it is much smaller than one.
Hello Christian,
I've been looking at this repo for a while and got confused by the below comment in "_def tangencyportfolio",
# exp_rets*x >= 1
I'm wondering why it should be the case, as I can only think about the expected return of the portfolio should be larger than risk free rate and it is much smaller than one.
Thanks,
Michelle