Abstrak
The purpose of this study was to determine the evaluation of optimal stock portfolio performance in banking companies listed on the lq45 index. This research uses descriptive quantitative type with single index method. The population in this study were 45 banking sector companies that went public on the Indonesia Stock Exchange. The sample was selected using purposive sampling technique on banking sector stocks that were consecutively included in the LQ45 Index for the period January 2017 - December 2021. The results of this study indicate that of the 5 stock samples, only 2 samples are eligible to enter the optimal portfolio, namely, Bank Central Asia Tbk. (BBCA) with a fund proportion of 91.86% and Bank Raykyat Indonesia (Persero) Tbk. (BBRI) with a fund proportion of 8.13%. With an expected return on the optimal portfolio of 1.88% and the risk that must be faced is 0.55%.