ABSTRACT The purpose of this study is to determine the effect of liquidity, profitability, business risk and investment opportunity set (IOS) on company value in IDX 80 companies 2019 - 2023. This study was conducted on companies included in IDX 80. The population in this study were IDX 80 companies 2019 - 2023, while the sample in this study amounted to 37 people with purposive sampling techn…