Purpose: This study aims to provide information and determine the development of the manufacturing industry which dominates the companies listed on the Indonesia Stock Exchange (IDX), in this case, specifically to determine the value of companies in the Basic Industry Sector and chemical in the Animal Feed Sub-Sector. Methods: In measuring Firm Value, you can use Price Earning Ratio (PER), Price to Book Value Ratio (PVB) and Tobin’s Q Ratio, but in this study we use the Tobin’s Q ratio because it is easy to understand both from our side of the researcher as well as from the side. reader. Data Analysis: This study used 4 animal feed sub-sector companies listed on the Indonesia Stock Exchange (BEI) 2015-2018 with information that can be accessed on the official website www.idx.com. Results and Discussion: The results of this study indicate that there are still companies that have company value below one or are categorized as undervalued in a certain year, there are also companies that show a company value above 1, which means that the company has the potential to develop. Conclusion: The basic industry and chemical sector have one of the animal feed subsectors, in which there are 4 companies. In our analysis, we use Tobin's Q, which counts in 4 years, namely 2015-2018 getting results more than 1, but there are some years that get less than 1.

Tujuan dari penelitian ini untuk mengetahui pengaruh Profitabilitas, Likuiditas, Pertumbuhan Penjualan Risiko Bisnis, Struktur Aktiva terhadap Harga Saham pada perusahaan sektor Industri dasar dan Kimia yang Terdaftar di Bursa Efek Indonesia (BEI). Periode waktu penelitian yang digunakan adalah 3 tahun yaitu 2016-2018. Populasi penelitian ini meliputi seluruh perusahaan Industri dasar dan Kimia yang terdaftar di Bursa Efek Indonesia (BEI) periode 2016-2018. Teknik pengambilan sampel menggunakan teknik purposive sampling. Berdasarkan teknik yang telah ditetapkan diperoleh 27  perusahaan. Jenis data yang digunakan adalah data sekunder yang diperoleh dari situs Bursa Efek Indonesia. Metode analisis yang digunakan adalah analisis regresi data panel. Hasil penelitian menunjukan bahwa secara parsial profitabilitas (ROA) dan  pertumbuhan penjualan berpengaruh positif terhadap struktur modal.  Risiko Bisnis dan  Struktur Aktiva berpengaruh negatif terhadap struktur modal. Sedangkan likuiditas tidak berpengaruh terhadap struktur modal.