ABSTRACT: The objectives: This paper aims to examine the effect of the proxy financial performance used by ROA, ROE, NIM on share prices of banking sector companies on the Indonesian Stock Exchange. Design / methodology / approach: This paper uses a quantitative approach by using numbered data to prove the hypothesis. Data on financial performance variables use proxies of ROA, ROE, NIM from company financial reports and the Indonesia Stock Exchange website at www.idx.co.id, www.ojk.go.id, www.bi.go.id, www.yahoofinance.com and Google search. Finding: The findings prove that NIM has a positive and significant effect on share prices. It is hoped that the findings can be used by investors to conduct financial performance analysis to have relevant information. For the ROA variable, ROE has no effect on share prices, meaning ROA, ROE does not have a value relevance to banking stock prices on the Indonesia Stock Exchange. Practical Implications: The findings are recommended for banking management to improve the effectiveness and efficiency of banking financial performance. Originality: Previous research was conducted to test financial performance on share prices, the findings concluded that financial performance has an influence on stock prices. The novelty in this study the researcher entered control variables as variables to strengthen the findings.