The aim of this research was to analyze the impact of both the impact of both the investment opportunity set, the board of independent commissioners and the characteristics of the company on firm value using a quantitative approach. The source of the data was secondary data from Indonesia Stock Exchange (BEI) website. The total sample in this study was 156 manufacturing companies during the 2017-2019 period. The sampling technique in this research was purposive sampling. The analysis method of this study was using multiple linear regression analysis with SPSS 25 as an analysis tool. Based on this anlaysis, the findings were that the investment opportunity set has a significant impact on firm value, the board of commissioners does not have a significant impact on firm value, firm size: profitability has a significant impact on firm value; and laverage does not have a significant impact on firm value.

Keywords : Investment Opportunity Set, Bord Independence, Firm Value, Financial Analysis, Firm Characteristics.