The research was conducted to empirically prove the effect of leverage (DER), institutional ownership (IO), profitability (ROA), and company size (SIZE) on firm value (PBV) in infrastructure sector companies listed on the Indonesia Stock Exchange. In the research to obtain a valid sample of 90 data from 38 companies after outliers were carried out using the purposive sampling method. This study tested the hypothesis using multiple linear regression methods and data were processed using SPSS version 16. The results of this study stated that leverage and firm size did not have a significant effect on firm value. Institutional ownership has a significant negative effect on firm value. Profitability has a significant influence and has a positive direction on firm value.
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