This study aims to analyze the effect of profitability, firm size, investment decisions, and debt policy on firm value. The research method used is quantitative research. In this study, company value is measured using Tobin's Q. The data in this study are secondary data in the form of annual financial statements of audited manufacturing companies and published as listed on the Indonesia Stock Exchange for the period of 2012 to 2016. The statistical method used is analysis of multiple linear regression using the SPSS version 22.00 program to process data. The study found that profitability, company size, and debt policy significantly influence the value of the company, while investment decisions do not affect the value of the company. Keywords: firm value, profitability, firm size, debt policy, investment decisions.  Abstrak. Penelitian ini bertujuan untuk menganalisis pengaruh profitabilitas, ukuran perusahaan, keputusan investasi, dan kebijakan utang terhadap nilai perusahaan.Metode penelitian yang digunakan adalah penelitian kuantitatif. Dalam penelitian ini, nilai perusahaan diukur dengan menggunakan Tobin’s Q. Data dalam penelitian ini adalah data sekunder berupa laporan keuangan tahunan perusahaan manufaktur yang telah diaudit dan dipublikasikan yang tercatat di Bursa Efek Indonesia periode tahun 2012 sampai dengan tahun 2016. Metode statistik yang digunakan adalah analisis regresi linear berganda dengan menggunakan program SPSS versi 22.00 untuk mengolah data. Penelitian menemukan bahwa profitabilitas, ukuran perusahaan, dan kebijakan utang berpengaruh signifikan terhadap nilai perusahaan, sedangkan keputusan investasi tidak berpengaruh terhadap nilai perusahaan. Kata kunci: Nilai perusahaan, profitabilitas, ukuran perusahaan, kebijakan utang, keputusan investasi.

The purpose of this study is to determine the effect of Cash Turnover, Inventory Turnover, Receivable Turnover, and Working Capital Turnover on Profitability in Consumers Manufacturing Industry Manufacturing Companies Listed on the Indonesia Stock Exchange in 2015-2017. The research method used quantitative approach, the type of descriptive research and its cumulative causal nature. The research population was 50 companies and the sample was 14 companies with a purposive sampling technique. Data collection techniques by means of documentation and sources of IDX financial statements. This study uses multiple linear regression test before testing the data hypothesis and tested using the classic assumption test. The results of the analysis of the coefficient of determination obtained R Square value of 0.152, which means the variance of the profitability variable that can be explained by the variables Cash Turnover, Inventory Turnover, Receivable Turnover, and Working Capital Turnover is 15.2% and the remaining 84.8% is explained by other variables. This research shows that simultaneous cash turnover, inventory turnover, accounts receivable turnover, and working capital turnover have a positive and significant effect on profitability. Partially Cash Turnover has no effect on Profitability, Inventory Turnover has a negative andno significant effect on Profitability, Accounts Receivable Turnover has no effect on Profitability and Working Capital Turnoverpositive and significant effect on Profitability.

This study aims to examine whether the attributes of the quality of accounting information reflect the qualitative characteristics of financial statements and examine the effect of the quality of accounting information on investment efficiency. The attributes of the quality of accounting information are predictability, discretionary revenue, discretionary accruals. Investment efficiency is measured by investment inefficiency as underinvestment and overinvestment. The sample was a manufacturing companies listed on the Indonesia Stock Exchange in 2012 until 2015 as many as 493 observations for examine the attributes of the accounting information quality to form factors that reflect the quality of the financial statements. While the sample of 479 observations used to test the influence of the quality of accounting information against underinvestment. Observation of overinvestment was not analyzed in this study because it has only 14 observations. Data analysis technique used is factor analysis and multiple linear regression. The results showed that the three attributes of the accounting information quality form two factors, the first factor called predictability and the second factor is called discretion. Both of these factors reflect the qualitative characteristics of the accounting information. However, the quality of accounting information measured by these two factors has no significant effect on underinvestment. Likewise, the operating cycle, ROA, and age have no effect on underinvestment. Meanwhile, firm size, tangibility, and dummy loss have a significant effect on underinvestment.