Perbandingan Metode Regresi Komponen Utama dan Regresi Ridge pada Analisis Pengaruh Rasio Keuangan Profitabilitas terhadap Harga Saham Perusahaan Perbankan
Submission Date: 2022-07-26 12:27:10
Accepted Date: 2023-04-30 00:00:00
Abstract
Investasi saham telah menjadi pilihan banyak orang terutama di zaman sekarang ini. Pastinya perlu cermat dalam melakukan investasi saham suatu perusahaan, yaitu dengan melihat kinerja keuangan perusahaan. Salah satu indikator penting untuk menilai prospek kinerja perusahaan di masa mendatang yaitu dengan melihat rasio profitabilitas yang dapat diperoleh dari laporan keuangan perusahaan. Bila investor menjadikan rasio profitabilitas sebagai indikator dalam pengambilan keputusan, maka investor dapat membeli harga saham yang tepat untuk di investasikan. Pada penelitian ini, akan digunakan data rasio profitabilitas, diantaranya yaitu Return on Assets (ROA), Return on Equity (ROE), Operating Profit Margin (OPM), Net Profit Margin (NPM) dan Earning per Share (EPS) serta data harga saham dari PT Bank Mandiri Tbk periode 2009-2018. Untuk mengetahui bagaimana pengaruh rasio profitabilitas terhadap harga saham, maka akan dilakukan metode regresi komponen utama dan regresi ridge yang merupakan metode regresi yang tepat untuk mengatasi masalah multikolinieritas pada data rasio profitabilitas. Hasil penelitian menunjukkan bahwa pada metode regresi komponen utama didapatkan rasio ROA dan ROE berpengaruh positif terhadap harga saham PT Bank Mandiri Tbk, rasio ROE dan OPM berpengaruh negatif terhadap harga saham PT Bank Mandiri Tbk, serta rasio NPM tidak berpengaruh secara signifikan terhadap harga saham PT Bank Mandiri Tbk. Untuk hasil penelitian pada metode regresi ridge didapatkan rasio ROA, NPM, dan EPS berpengaruh positif terhadap harga saham PT Bank Mandiri Tbk, sedangkan rasio ROE dan OPM berpengaruh negatif terhadap harga saham PT Bank Mandiri Tbk. Kemudian berdasarkan kriteria nilai R-Square terbesar dan nilai MSE terkecil maka diperoleh regresi ridge sebagai metode terbaik dalam mengatasi masalah multikolinieritas pada kasus data rasio profitabilitas PT Bank Mandiri Tbk.
Keywords
Harga Saham; Multikolinieritas; Rasio Profitabilitas; Regresi Komponen Utama; Regresi Ridge
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