FYI: The problem when searching for the “optimal” portfolio is that it’s always changing. The optimal portfolio today is unlikely to be the optimal portfolio of the future. The only true optimal portfolio is only known with the benefit of hindsight.
Successful investors know there’s no such thing as a perfect portfolio. So you must understand and be willing to live with whatever drawbacks exist within the portfolio of your choosing.
Regards,
Ted
https://awealthofcommonsense.com/2019/07/the-optimal-portfolio/