The research analyzes capital structure, investment decisions, and profitability among manufacturing firm whose shares are traded listed through the Indonesia Stock Exchange (IDX) from 2020 to 2024 period. Given importence attached these factors in corporate financial management, this study further investigates whether firm growth moderates the relationships among these variabels. Secondary data from financial statements an annual repots of selected firms were analyzed through a quantitative approach Purposive sampling procedure produced a sample of 15 companies and 75 observations. Data analysis involved multiple linier regression and Moderated Regression Analysis, with findings demonstrating that capital structure positively and significantly affect profitability, organizations must carefully manage their financial framework, whereas invesments decisios show a positive but statiscally insignificant influence. Consequently, firm expansion failed to moderate the imopacts that capital structure and invesmnets decisions exerted on profitability.
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