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All Journal JURNAL MANAJEMEN PENDIDIKAN Al-Ulum: Jurnal Pendidikan Islam Jurnal Ilmiah Wahana Pendidikan Al-Ulum: Jurnal Pendidikan Islam EduMatika: Jurnal MIPA Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Journal of Economics and Social Sciences Innovative: Journal Of Social Science Research Kohesi: Jurnal Sains dan Teknologi Tashdiq: Jurnal Kajian Agama dan Dakwah Trigonometri: Jurnal Matematika dan Ilmu Pengetahuan Alam Joong-Ki
Maulana, Bintang
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Analisis Volatilitas dan Forecasting Return Saham Bank Mandiri Menggunakan ARIMA-GARCH: Proyeksi 5 Bulan ke Depan Putri, Amelia; Hani, Aulia; Maulana, Bintang
JURNAL MANAJEMEN PENDIDIKAN Vol 13, No 2 (2025): Jurnal Manajemen Pendidikan
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/jmp.v13i2.13120

Abstract

ANALYSIS OF VOLATILITY AND FORECASTING RETURN OF BANK MANDIRI SHARES USING ARIMA-GARCH: PROJECTIONS FOR THE NEXT 5 MONTHSIndonesia’s capital market continues to demonstrate strong dynamics, particularly among blue-chip stocks such as PT Bank Mandiri (Persero) Tbk (BMRI), which exhibit high volatility influenced by macroeconomic variables, global conditions, and market sentiment. To obtain a more accurate projection of BMRI’s price movement, this study applies the ARIMA-GARCH model to forecast stock prices for the five-month period from November 2025 to April 2026. The dataset consists of daily closing prices from November 2020 to November 2025. Preprocessing involved handling outliers using winsorizing and conducting a stationarity test, in which the Augmented Dickey-Fuller result indicated that the return series was stationary with a p-value of 0.0000. Based on information criteria, ARIMA(0,0,1) was selected as the optimal mean model with an AIC value of –3985.7041. Volatility was subsequently modeled using GARCH(1,1) with a normal distribution, showing a persistence level of 0.8598, suggesting that BMRI volatility remains elevated and requires time to stabilize after a shock. Diagnostic tests confirmed the absence of residual autocorrelation (Ljung-Box p-value 0.05) and no remaining ARCH effect (p-value 0.1744), validating the adequacy of the combined model. Forecasting through 1,000-iteration Monte Carlo simulation produced an average projected final price of Rp 4,960, up from Rp 4,730, indicating an expected change of +4.82%. Risk metrics showed a 95% Value at Risk (VaR) of Rp 3,550 and an Expected Shortfall of Rp 3,340. The model’s performance on the test dataset yielded an RMSE of 0.014704 and an sMAPE of 75.7663%.
Sistem Checklist Pengecekan Kepatuhan Mitra Kerjasama Terhadap Program Jaminan Sosial Ketenagakerjaan Berbasis Website Maulana, Bintang; Nugraha, Fitra Septia
Jurnal Komputer Teknologi Informasi Sistem Komputer (JUKTISI) Vol. 5 No. 1 (2026): Juni 2026
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juktisi.v5i1.664

Abstract

Proses pengecekan kepatuhan mitra terhadap program Jaminan Sosial Ketenagakerjaan di lingkungan BPJS Ketenagakerjaan pengolahan data masih bergantung pada cara manual memakai Microsoft Excel. Metode ini memiliki berbagai kekurangan seperti rawan kesalahan input, duplikasi data, kesulitan dalam pelacakan histori, serta lambatnya proses pelaporan. Sebagai upaya penanggulangan tantangan yang dimaksud, penelitian ini memiliki tujuan membuat rancangan serta mengembangkan sistem checklist berbasis website yang dapat mengembangkan kinerja yang efisien, akurat, serta transparansi dalam pemantauan kepatuhan mitra kerja. Pengembangan sistem diimplementasikan melalui teknik waterfall berawal dari proses identifikasi kebutuhan, dilanjutkan dengan desain sistem, implementasi, pengujian, serta tahap pemeliharaan. Teknologi yang digunakan meliputi PHP dengan framework CodeIgniter, database MySQL, serta pendekatan arsitektur Model, View, dan Controller (MVC). Fitur utama sistem meliputi registrasi pengguna, pengelolaan data mitra, input dan validasi checklist, approval oleh kepala cabang, serta pembuatan laporan dalam format digital. Sistem ini mempermudah proses pelaporan secara real-time dan terintegrasi, sehingga dapat diakses dengan lebih cepat dan aman oleh pengguna internal. Temuan dari proses pengujian mengindikasikan bahwa sistem berfungsi secara optimal sesuai dengan kebutuhan pengguna dan berhasil menggantikan proses manual yang sebelumnya digunakan. Dengan adanya sistem ini, proses pengecekan memperoleh tingkat efektifitas, efisien, dan terdokumentasi secara digital.
Co-Authors Abangan, Ferdyanto Amalia, Seila Andari, Arnis Wulan Anita Puji Astutik Arnita Arnita Br Surbakti, Arnis Wulan Andari Fachriz Effendy K Femei Purnamasari, Femei Hani, Aulia K, Fachriz Effendy. L.Tobing, Imelda Octavia Lubis, Hafiz Khalik Lubis, M. Shadri Ismaun Lumbantobing, Imelda Octavia Napitupulu, Rusmawanty Ningsih, Naia Oktavia Novelika, Sherly Nugraha, Fitra Septia Nugroho, Fahri Nurmayani Octaviyani, Risca Payana, Sandi Dwi Pulungan, Zakiy Maulana Putri, Alya Nabilla SETIYO UTOYO Sianturi, Michael D Simanjuntak, Ferdyanto Abangan Sinaga, Gizka Triyunita Sitorus, Yolanda Angelina Surbakti, Arnis Wulan Andari Susanto, Is Tabitha, May Rani Triyunita, Gizka Ulfa, inang Namora