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All Journal JURNAL ELEKTRO Indonesia Symposium on Computing Indonesian Journal on Computing (Indo-JC) IJoICT (International Journal on Information and Communication Technology) JOIN (Jurnal Online Informatika) JURNAL MEDIA INFORMATIKA BUDIDARMA Zero : Jurnal Sains, Matematika, dan Terapan Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) TEKTRIKA - Jurnal Penelitian dan Pengembangan Telekomunikasi, Kendali, Komputer, Elektrik, dan Elektronika Building of Informatics, Technology and Science Journal of Computer System and Informatics (JoSYC) Charity : Jurnal Pengabdian Masyarakat Jurnal Indonesia Sosial Teknologi eProceedings of Engineering LOGIC: Jurnal Penelitian Informatika
Deni Saepudin
Universitas Telkom Bandung, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences

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Prediction of Stock Industry Sectors Listed on the Indonesia Stock Exchange (IDX) based on Financial Statements with the Random Forest Method I Kamil Elian Zhafran; Deni Saepudin
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 10 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i10.1239

Abstract

This research aims to predict the stock industry sector listed on the Indonesia Stock Exchange (BEI) based on financial reports using the Random Forest method. The dataset used in this research includes financial data from companies listed on the IDX in the period 2010 to 2022. The data processing process includes data cleaning, handling class imbalance with oversampling techniques using SMOTE, and feature scaling using StandardScaler. The Random Forest model is used to classify companies into appropriate industry sectors. The eval_uation results show that the model has good performance with an overall accuracy of 80.21%. Several classes showed very good performance, such as the Financials class with precision of 95.24%, recall of 100%, and F-1 score of 97.56%. However, there are also classes that show lower performance, such as the Healthcare class with a precision of 51.61% and an F-1 score of 61.54%. The confusion matrix indicates that the model is able to identify most classes accurately, although there are several classes with prediction errors.
Comparative Performance of Statistical and LSTM Based Arbitrage in the Indonesian Stock Market Yunita Yunita; Indwiarti Indwiarti; Deni Saepudin
ZERO: Jurnal Sains, Matematika dan Terapan Vol 9, No 3 (2025): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v9i3.27373

Abstract

This study compares the performance of traditional statistical arbitrage and Long Short-Term Memory (LSTM)-based deep arbitrage strategies in generating returns and risk-adjusted performance in the Indonesian stock market. A quantitative approach is employed using long-only trading simulations on daily closing prices of blue-chip financial sector stocks listed on the Indonesia Stock Exchange from April 2015 to April 2025. Stock pairs are selected based on correlation and cointegration criteria, while spread volatility is modeled using a GARCH (1,1) framework. To ensure a genuine out-of-sample evaluation, the sample is divided into an in-sample period from April 2015 to August 2021 for model training and parameter optimization, and an out-of-sample period from September 2021 to April 2025 for performance assessment. Strategy performance is evaluated using portfolio return and Sharpe ratio. The empirical results show that both strategies are feasible in the Indonesian market; however, the LSTM-based deep arbitrage strategy significantly outperforms the traditional statistical arbitrage approach, achieving a higher out-of-sample portfolio return (735% versus 482%) and a superior Sharpe ratio (1.67 versus 0.69). These findings indicate that deep learning-based arbitrage can provide substantial improvements in both return and risk-adjusted performance under long-only trading constraints in an emerging market context.
Co-Authors Abdurrahman Muttaqiin Achmad Fadholy Achmad Rizal Aditya Firman Ihsan Adiwijaya Aisyah Aisyah Alberila Fraida Loceseima Putri Almaya Sofariah Andhika Rama Putra Anggia Parsaoran Exaudi Aniq Antiqi Rohmawati Aniq Atiqi Rohmawati Aniq Rohmawati Anjar Pratiwi Annas Wahyu Ramadhan Annisa Aditsania Annisa Resnianty Anton Sri Haryanto Arfananda, Muhammad Ghifari Arifin Dwi Kandar Saputro Ayunda Firsty Trisnowati Azizah , Nakhwa Benedikto Krisnandy Wijaya Caramoy, Senza Danar Satrio Aji Dara Ayu Lestari Defy Ayu Dewa Made Rai Widyadarma Diah Fitri Wulandari Diani Sarah Kamilial Diani Sarah Kamilial Didit Adytia Dimas Rizqi Guintana Dini Apriliani Lestari Dio Navialdy Egi Shidqi Rabbani Elvina Oktavia Erlina Febriani Esther Laura Christy Fadhlika Hadi Fahmi Muhamad Fauzi Farah Diba Faturachman Nugraha Sasmita Fazlur Rahman Amri Febry Triyadi Fhira Nhita Fikri Nur Hadiansyah Fitriaini Amalia Freyssenita Kanditami P Furqon Hidayat Gharyni Nurkhair Mulyono Ghufron, Sayid Giali Ghazali Gilang Rachman Perdana Gilang Rachman Perdana Hadyatma Dahna Marta Hario Adi Ghufron Herlansyah, Ridhwan Rifky Himatul Zulfa Husain Athfal Hidayat I Kamil Elian Zhafran Ihsan Hasanudin Indwiarti Irfan Fauzan Prasetyo Irma Palupi Isman Kurniawan Izzata Izzata Jondri Jondri Kaisa Sekaring Pertiwi Kautsar Abdillah Kemas Muslim Lhaksmana Khoirunnisa Ulayya Kuntjoro Adji Sidarto Lani Rohaeni Laode Muhammad Ali Al-Qomar Lesmana, Rangga Made Larita Ditakristy Mailia Putri Utamil Maulid Fathurachman, Rizaldi Mayriskha Isna Indriyani Mega Silvia Desvi Muhamad Aziz, Reihan Muhammad Fadhil Maulana Muhammad Iqbal Cholil Muhammad Rifqi Arrahim Natadikarta Muhammad Taufiq Raihan Nanda Putri Mintari Naufal Abdurrahman Burhani Nisrina Nur Faizah Novelya Nababan Novi Syafira, Muthia Nur Roza Fitriyana Putri Nuvaisiyah Putu Agus Narestha Adi Pratama Putu Harry Gunawan Rahmi Putri Amalia Raisa Betha Meiliza Ratih Puspita Furi Rauf, Khalifatur Razaq, Kukuh Sanddi Reima Agustina Kusumawardani Reiza Krisnaviardi Resi Annisa Nur Reza Pratama Rian Febrian Umbara Ridhwan Rifky Herlansyah Rizaldi Maulid Fathurachman Rizq Athariq, Muhammad Sabilla Fitriyantini Saputra, Muhammad Ridho Semeidi Husrin Shabrina Nanggala Sheila Nur Fadhila Sofyan, Denny Sri Rezeki Hardiyanti Susy Sundari Syaifrijal Zirkon Radion Tasya Salsabila Tifani Intan Solihati Triandini Nurislamiaty Triyana Kadarisman Uggi Stivani Savitri Vina Putri Damartya Widyasari, Felicia Dina Yanuar Ishaq Yunita Yunita Zhafran, Kamil Elian