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All Journal Nominal: Barometer Riset Akuntansi dan Manajemen Trikonomika: Jurnal Ekonomi PROFIT : Kajian Pendidikan Ekonomi dan Ilmu Ekonomi Jurnal Mirai Management Jurnal Manajemen Indonesia Jurnal Mitra Manajemen Agregat: Jurnal Ekonomi dan Bisnis JMM (Jurnal Masyarakat Mandiri) SEIKO : Journal of Management & Business Almana : Jurnal Manajemen dan Bisnis JASa (Jurnal Akuntansi, Audit dan Sistem Informasi Akuntansi) JAE (Jurnal Akuntansi dan Ekonomi) Sosiohumanitas: Jurnal Ilmu-Ilmu Sosial dan Humaniora Jurnal Manajemen Dirgantara Jurnal Riset Akuntansi Kontemporer jurnal syntax admiration Jurnal Riset Akuntansi dan Keuangan Jurnal Riset Manajemen dan Bisnis Indonesian Journal of Business Analytics (IJBA) FRIMA: Festival Riset Ilmiah Manajemen & Akuntansi Jurnal Pengabdian Masyarakat Akademisi Jurnal Ilmiah MEA (Manajemen, Ekonomi, dan Akuntansi) eProceedings of Management Community Service Seminar and Community Engagement (COSECANT) Enrichment: Journal of Multidisciplinary Research and Development Multidisciplinary Indonesian Center Journal Jurnal Bisnis dan Pemasaran Digital International Journal of Accounting and Management Information Systems Global Academy of Business Studies
Brady Rikumahu
Universitas Telkom
Religion Aerospace Engineering Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Transportation Other

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Comparison of black-scholes models using historical volatility and garch volatility in collar strategy as hedging efforts for towr and tbig stocks Rikumahu, Brady; Akhmad, Mu’arif Fandhi
International Journal of Accounting and Management Information Systems Vol. 1 No. 2 (2023): August
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/ijamis.v1i2.3043

Abstract

Purpose: This study aims to examine the implementation of option contracts using the Black-Scholes model with Historical Volatility and GARCH Volatility through a collar strategy, as a means of protecting stock value in the telecommunications sector. The research focuses on managing risk in stock investments, particularly for TOWR and TBIG stocks, in both crisis and non-crisis conditions. Research methodology: The study applies the Black-Scholes model using two types of volatility—Historical and GARCH—within a collar strategy framework to evaluate its effectiveness in mitigating risks associated with TOWR and TBIG stocks under varying market conditions. Results: For TOWR stocks, GARCH performs better in non-crisis conditions with three-month maturity, while Historical Volatility is superior in some shorter-maturity scenarios under both market conditions. For TBIG stocks, GARCH outperforms in all crisis scenarios with three-month maturity, whereas Historical Volatility leads in certain stable, short-term conditions. Conclusion: The effectiveness of volatility methods in the Black-Scholes model depends on stock type, market conditions, and maturity, with GARCH better for high volatility and longer terms, while Historical suits stable, short-term scenarios. Limitation: The study is limited to two telecommunications stocks and does not include empirical testing using live trading data, which could provide deeper validation of the proposed strategies. Contribution: This research contributes to the understanding of how investment strategies like collar options can be optimized using appropriate volatility models. Investment involves the allocation of money or capital with the aim of gaining profit.
Pengaruh Return On Equity Dan Debt To Equity Ratio Terhadap Harga Saham Pada Sub Sektor Farmasi (Studi pada Perusahaan Farmasi yang Terdaftar di Bursa Efek Indonesia Periode 2019-2021) Widyandari, Regina Rhisanty; Rikumahu, Brady
eProceedings of Management Vol. 10 No. 4 (2023): Agustus 2023
Publisher : eProceedings of Management

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Abstract

Harga saham adalah harga yang ditetapkan oleh suatu perusahaan terhadap kepemilikan saham di perusahaanmereka. Dengan metode analisis linear berganda, tujuan penelitian ini adalah untuk mengetahui pengaruh Returnon Equity (ROE) dan Debt to Equity Ratio (DER) terhadap harga saham perusahaan sub sektor farmasi yangterdaftar di BEI periode 2019 – 2021. Populasi pada penelitian ini adalah perusahaan sub sektor farmasi yangterdaftar di BEI periode 2019 – 2021. Dengan teknik purposive sampling diperoleh 7 perusahaan sub sektor farmasiyang terdaftar di BEI periode 2019 – 2021 yang rutin mempublikasikan laporan keuangan triwulan. Hasil penelitianyang diuji menggunakan uji simultan menunjukan bahwa ROE dan DER berpengaruh secara simultan terhadapharga saham perusahaan sub sektor farmasi yang terdaftar di BEI periode 2019 – 2021. Uji parsial menunjukanbahwa ROE tidak berpengaruh dan DER secara parsial berpengaruh negatif terhadap harga saham perusahaan subsektor farmasi. Kemudian ROE dan DER mempengaruhi harga saham perusahaan sub sektor farmasi sebesar14.3%. Disarankan agar peneliti selanjutnya mengganti objek dengan sub sektor lain dan menambah periodepenelitian. Investor perlu berhati-hati karena DER berpengaruh negatif terhadap harga saham.kata kunci-return on equity (roe), debt to equity ratio (der), harga saham.
Analisis Risiko Kredit Dan Risiko Operasional Pada Perusahaan Bank Mandiri Dan Bank Rakyat Indonesia Periode 2008 – 2022 Rikumahu, Brady; Dhaifan, Adlan
eProceedings of Management Vol. 11 No. 1 (2024): Februari 2024
Publisher : eProceedings of Management

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Abstract

Bank merupakan lembaga intermediasi yang menghimpun dana dari masyarakat dan menyalurkan kembali kepada masyarakat. Risiko yang mungkin terjadi karena adanya kegagalan debitur dalam melaksanakan kewajibannya adalah risiko kredit dan variabel ini diproksikan dengan NPL. Risiko operasional merupakan salah satu hal yang inheren dalam proses pelaksanaannya atau aktivitas operasional dan variabel ini diproksikan dengan BOPO. Penelitian ini menggunakan data sekunder yang diambil dari Laporan Keuangan Bank Mandiri dan Bank Rakyat Indonesia selama periode 2008 – 2022. Model analisis yang digunakan adalah ARIMA (Autoregressive Integrated Moving Average), dengan AR, MA, ARMA, yang terdapat pada kelompok ARIMA. Hasil Penelitian ARIMA pada NPL Bank Mandiri mendapati nilai random, dan NPL pada Bank Rakyat Indonesia mendapati nilai ARIMA (1,1,4), nilai BOPO pada Bank Mandiri mendapati nilai ARIMA (3,1,2), dan nilai BOPO pada Bank Rakyat Mendapati nilai ARIMA (1,1,0). Secara keseluruhan, nilai rata-rata NPL pada kedua Bank tersebut dapat dikatakan sehat karena masih sesuai dengan ketentuan OJK dan BI, namun nilai rata-rata BOPO pada kedua Bank tersebut tidak dapat dikatakan ideal karena tidak menyentuh angka yang telah ditentukan oleh OJK dan BI. Kata Kunci-ARIMA, BOPO, NPL, risiko kredit, risiko operasional
Analisis Faktor Adopsi E-Wallet Gopay, OVO, dan DANA dengan Model UTAUT2 pada Masyarakat Jawa Barat Saragih, Yulia Wahyuni; Rikumahu, Brady
Nominal: Barometer Riset Akuntansi dan Manajemen Vol. 11 No. 1 (2022): Nominal April 2022
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/nominal.v11i1.43075

Abstract

Analysis of the Gopay, OVO, and DANA E-Wallet Adoption Factors with the UTAUT2 Model in the West Java. Fintech is changing the banking industry, reshaping business, and changing the way consumers manage and use money. This study's purpose is to examine the factors that affect the adoption of e-wallet, a product of fintech in West Java using the UTAUT 2 model. This study used data collection techniques in the form of surveys by distributing online and manual questionnaires. The respondents of this research are 400 users from Gopay, OVO, or DANA, domiciled in West Java, and ranging in age from 18-40 years. This study used the PLS-SEM model. The results showed that there were three accepted hypotheses. Only the Habit variable (H7a) has a positive significant effect on the Behavioral Intention, while the other variables have no significant effect. Also, it was found that the variables of Facilitating Conditions (H4b) and Behavioral Intention (H8) had a significant positive effect on Use Behavior. In addition, only the Gender variable moderates the independent variable with the dependent variable. ABSTRAKAnalisis Faktor Adopsi E-wallet Gopay, OVO, dan DANA dengan Model UTAUT2 pada Masyarakat Jawa Barat. Fintech telah mengubah industri perbankan, membentuk kembali bisnis, dan mengubah cara konsumen mengatur dan menggunakan uang mereka. Tujuan dari penelitian ini yaitu untuk meneliti faktor-faktor yang mempengaruhi adopsi e-wallet yang merupakan produk dari fintech pada masyarakat Jawa Barat menggunakan model UTAUT 2. Penelitian ini menggunakan teknik pengambilan data berupa survei dengan menyebarkan kuesioner secara online dan manual. Responden penelitian ini merupakan 400 pengguna dari Gopay, OVO, atau DANA, berdomisili di Jawa Barat, dan berusia 18-40 tahun. Penelitian ini akan menggunakan model PLS-SEM. Hasil penelitian menunjukkan bahwa terdapat tiga hipotesis yang diterima. Hanya variabel Kebiasaan (H7a) yang berpengaruh signifikan positif dengan niat menggunakan, sedangkan variabel lainnya tidak berpengaruh signifikan. Kemudian ditemukan bahwa variabel Kondisi Pendukung (H4b) dan Niat Menggunakan (H8) berpengaruh signifikan positif dengan perilaku menggunakan. Kemudian, hanya variabel jenis kelamin yang memoderasi variabel independen dengan variabel dependen.
Determinant Factors of Profitability in Fintech Lending Companies in Indonesia from 2019 to 2022 Using Principal Component Analysis (PCA) Nomba, Aditya Novanto; Rikumahu, Brady
Indonesian Journal of Business Analytics Vol. 4 No. 5 (2024): October 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijba.v4i5.10703

Abstract

This reserach examines factors influencing the profitability of Fintech lending companies in Indonesia. A purposive sampling method was employed to select 45 companies annually. The data for this research are cross-sectional, comprising the years 2019, 2020, 2021, and 2022. The methods in this research are Principal Component Analysis (PCA) and multiple linear regression. Findings reveal that current ratio, cash ratio, working capital turnover, debt to assets ratio, short-term debt ratio, equity multiplier, total assets turnover, fixed assets turnover, tangible assets ratio, and effective tax rate significant determinants of profitability for Fintech lending companies in Indonesia. This reserach can help Fintech lending companies improve their profitability.
Pengaruh Dewan Direksi, Dewan Komisaris, Komite Audit Dan Corporate Social Responsibility Terhadap Kinerja Keuangan Perusahaan Rahmawati, Inge; Rikumahu, Brady; Dillak, Vaya Juliana
JAE (JURNAL AKUNTANSI DAN EKONOMI) Vol 2 No 2 (2017): JURNAL AKUNTANSI DAN EKONOMI
Publisher : UNIVERSITAS NUSANTARA PGRI KEDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (268.841 KB) | DOI: 10.29407/jae.v2i2.866

Abstract

Penerapan Good Corporate Governance saat ini bukan lagi sekedar kewajiban, namun telah menjadi kebutuhan bagi setiap perusahaan dan organisasi. Good Corporate Governance diperlukan untuk memberikan kemajuan terhadap kinerja suatu perusahaan dan dapat menjadikan perusahaan berumur panjang dan bisa dipercaya .Selain GCG, perusahaan juga harus berfokus pada Corporate Social Responsibility dari perusahaan tersebut, karena perkembangan dunia usaha saat ini menuntut perusahaan untuk lebih meningkatkan perhatiannya terhadap lingkungan sosial agar dapat meningkatkan kinerja keuangan perusahaan tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh variabel dewan direksi, dewan komisaris, komite audit dan corporate social responsibility (CSR) terhadap kinerja keuangan yang diproksikan dengan return on assets (ROA) pada perusahaan sub sektor pertambangan batu bara yang terdaftar di Bursa Efek Indonesia tahun 2013-2015. Teknik pengambilan sampel dalam penelitian ini menggunakan purposive sampling yang menghasilkan 12 sampel dalam kurun waktu 3 tahun yaitu sebanyak 48 unit sampel. Metode analisis yang digunakan yaitu analisis regresi data panel yang diolah menggunakan Eviews 9. Hasil penelitian ini menunjukkan bahwa secara simultan variabel dewan direksi, dewan komisaris, komite audit dan corporate social responsibiity (CSR) berpengaruh terhadap kinerja keuangan perusahaan yang diproksikan dengan return on assets (ROA). Secara parsial variabel dewan direksi dan dewan komisaris berpengaruh secara positif dan signifikan terhadap kinerja keuangan perusahaan. Sedangkan variabel komite audit dan corporate social responsibility (CSR) tidak berpengaruh terhadap kinerja keuangan perusahaan
Comparison of black-scholes models using historical volatility and garch volatility in collar strategy as hedging efforts for towr and tbig stocks Rikumahu, Brady; Akhmad, Mu’arif Fandhi
International Journal of Accounting and Management Information Systems Vol. 1 No. 2 (2023): August
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/ijamis.v1i2.3043

Abstract

Purpose: This study aims to examine the implementation of option contracts using the Black-Scholes model with Historical Volatility and GARCH Volatility through a collar strategy, as a means of protecting stock value in the telecommunications sector. The research focuses on managing risk in stock investments, particularly for TOWR and TBIG stocks, in both crisis and non-crisis conditions. Research methodology: The study applies the Black-Scholes model using two types of volatility—Historical and GARCH—within a collar strategy framework to evaluate its effectiveness in mitigating risks associated with TOWR and TBIG stocks under varying market conditions. Results: For TOWR stocks, GARCH performs better in non-crisis conditions with three-month maturity, while Historical Volatility is superior in some shorter-maturity scenarios under both market conditions. For TBIG stocks, GARCH outperforms in all crisis scenarios with three-month maturity, whereas Historical Volatility leads in certain stable, short-term conditions. Conclusion: The effectiveness of volatility methods in the Black-Scholes model depends on stock type, market conditions, and maturity, with GARCH better for high volatility and longer terms, while Historical suits stable, short-term scenarios. Limitation: The study is limited to two telecommunications stocks and does not include empirical testing using live trading data, which could provide deeper validation of the proposed strategies. Contribution: This research contributes to the understanding of how investment strategies like collar options can be optimized using appropriate volatility models. Investment involves the allocation of money or capital with the aim of gaining profit.
THE INFLUENCE OF DIGITAL LITERACY, FINANCIAL LITERACY, GENDER, AND FEAR OF MISSING OUT (FOMO) ON STOCK INVESTMENT DECISIONS WITH INFORMATION DISCLOSURE AS A MEDIATING VARIABLE AMONG GENERATIONS Y AND Z IN WEST JAVA Zukhruf Ramadhani; A. Mukti Soma; Brady Rikumahu; Dwi Fitrizal Salim
Multidisciplinary Indonesian Center Journal (MICJO) Vol. 3 No. 1 (2026): Vol. 3 No. 1 Edisi Januari 2026
Publisher : PT. Jurnal Center Indonesia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62567/micjo.v3i1.1968

Abstract

The This study is based on the phenomenon of increasing investment losses and FOMO (Fear of Missing Out) in Indonesia, with illegal investment losses amounting to IDR 139 trillion and FOMO among young people rising to 80% by 2024. This trend aligns with the growing number of investors and digital literacy in Indonesia, particularly in Java, which has the highest concentration of investors. The large population of Generations Y and Z in West Java serves as the subject of this research, highlighting the gap between financial literacy (56.10%) and financial inclusion (88.31%). This reinforces the urgency of this study. Information disclosure is considered crucial in reducing information asymmetry and managing risk in investment decision-making. The main objective of this study is to examine the direct and indirect effects of digital literacy, financial literacy, gender, and FOMO on stock investment decisions, as well as to test the role of information disclosure. A quantitative approach is used, with a questionnaire distributed to 443 respondents from Generations Y and Z in West Java, all of whom have investment experience in stocks. The purposive sampling technique was used, and data analysis was conducted using Structural Equation Modeling-Partial Least Squares (SEM-PLS) to test model validity, reliability, and relationships between variables. The results show that digital literacy, financial literacy, gender, and FOMO significantly affect stock investment decisions. Information disclosure mediates the relationship between financial literacy, gender, and FOMO on investment decisions but does not mediate the relationship between digital literacy and investment decisions. Furthermore, information disclosure positively influences stock investment decisions, emphasizing the importance of transparency. This study contributes to the development of a theoretical model that highlights the role of market discipline through information disclosure. Practically, the findings can guide OJK and companies in designing digital-financial literacy programs and improving information transparency to prevent investment fraud and increase investor confidence. The study suggests that investors should enhance their understanding of investment risks and critically assess available information. Limitations include the focus on Generations Y and Z in West Java using purposive sampling, and the exclusion of other factors like education. The self-report quantitative method may lead to bias, and cross-sectional data does not capture changes in investment behavior over time. Future research is recommended to expand the demographic sample, include additional variables, and use a mixed-method approach for more comprehensive results.
PEMBERDAYAAN MASYARAKAT DESA MELALUI WORKSHOP DAN PENDAMPINGAN UNTUK PENGELOLAAN WEBSITE DESA WISATA Prasetio, Adhi; Rikumahu, Brady; Octrina, Fajra
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 5 (2024): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i5.26252

Abstract

Abstrak: Keberadaan website merupakan salah satu faktor penting dalam menyampaikan informasi bagi sebuah desa wisata. Untuk dapat menjalankan fungsinya sebagai media promosi, website memerlukan peran aktif masyarakat untuk mengelola konten yang ditampilkan secara teratur. Pengelolaan konten website ini memerlukan keterampilan dan komitmen khusus dari masyarakat sasar. Melalui kegiatan workshop dan pendampingan ini, diharapkan masyarakat dapat meningkatkan soft skill dan hard skill nya untuk dapat mengelola konten website desa secara mandiri. Untuk mencapai hal tersebut diperlukan tiga tahap, yaitu metode ceramah dilakukan untuk meningkatkan kesadaran pentingnya website dalam promosi, workshop pengelolaan konten website, dan proses pendampingan yang berkelanjutan. Mitra pada kegiatan ini adalah masyarakat desa wisata sebanyak 40 orang pada saat workshop, dan untuk pendampingan pengelola website sebanyk 15 orang. Evaluasi yanga dilakukan adalah dengan tanya jawab dan pengisian kuesioner. Hasil dari penyelenggaraan kegiatan pengabdian masyarakat ini menunjukkan bahwa lebih dari 90% peserta merasakan manfaat dari pelatihan yang diberikan dan lebih dari tujuh orang kandidat pengelola website aktif melakukan kegiatan penulisan artikel untuk konten website. Abstract: The existence of a website is one of the important factors in conveying information for a tourist village. In order to function as a promotional media, the website requires the active role of the community to manage the content that is displayed regularly. Managing the content of this website requires special skills and commitment from the target community. Through this workshop and mentoring activity, it is hoped that the community can improve their soft skills and hard skills to be able to manage the content of the village website independently. To achieve this, three stages are needed, namely the lecture method is carried out to increase awareness of the importance of websites in promotion, website content management workshops, and ongoing mentoring processes. The partners in this activity are 40 people from the tourist village community during the workshop, and 15 people for mentoring website managers. The evaluation carried out was through questions and answers and filling out questionnaires. The results of this community service activity showed that more than 90% of participants felt the benefits of the training provided and more than seven candidate website managers actively wrote articles for website content.
The impact of capital structure, investment growth, and liquidity on financial performance of automotive companies and its components on the Indonesia Stock Exchange (2018-2022) Mandasari, Riska; Rikumahu, Brady
Global Academy of Business Studies Vol. 1 No. 3 (2025): January
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/gabs.v1i3.3568

Abstract

Purpose: This study analyzes the influence of capital, investment, and liquidity structures on the financial performance of automotive companies and their components listed on the Indonesia Stock Exchange (IDX) between 2018 and 2022. Research methodology: Multiple regression analysis was used, and data were obtained from the company's annual financial statements from 2018 to 2022. The findings of this study are expected to provide important insights for financial managers and stakeholders in managing company finances and serve as a reference for investors and creditors in evaluating the financial performance of a company. Results: The results show that capital structure has a significantly positive effect on financial performance, while investment and liquidity do not significantly affect it. Conclusion: Capital structure significantly improves the financial performance of automotive companies, whereas investment and liquidity show no significant effects. Therefore, optimizing the capital structure is crucial for strengthening financial strategies in the Indonesian automotive sector. Limitation: The study's limitation is that it focuses solely on automotive companies listed on the Indonesia Stock Exchange during the specified time frame. Contribution: The study's contribution is that it provides empirical evidence regarding the impact of capital structure, investment growth, and liquidity on financial performance in the Indonesian automotive industry, which can inform future research and practical applications in this context.
Co-Authors A. Mukti Soma Ade Romadhony Adhi Prasetio Adhia Ika Wahyuni Akhmad, Mu’arif Fandhi Ali Riza Fahlevi Alza, Hanifa Fauzia Anisah Firli Anisah Firly Anna Quraisy Haq Arif Kuswanto Athifah Nadya Akmalia Brigitta Priscilla DivinaRianti Dadan Rahadian Danial, Rahmadiva Dianitha Dembi Tri Al-Fikri Dhaifan, Adlan Dicky Hidayat Dillak, Vaya Juliana Dini, Farah Azzahra Divya Dwika Pramesti Dwi Fitrizal Salim Fajra Octrina Fatimah Kurniawati Putri Frima, Mariana Hanifa Fauzia Alza Hergijantono, Muhammad Rafi Imanuddin Hasbi Indrawan, Ida Bagus Agung Keysha Salsabila Saputra Khairunnisa Khairunnisa Kurniawati Kurniawati Leonie Syafira Mandasari, Riska Maulidia Isnaini Nauval Nurvian Mugni Nomba, Aditya Novanto Nugraha, Dandi Sukma Nur Sheha Gunawan, Ahmad Nurmayanti Alifia Nuslih Jamiat Putri Fariska Sugestie Putri Sulistyowati Putu Nina Madiawati Rafi Irbah Kusumawati Rahmadiva Dianitha Danial Rahmawati, Inge Refianti Andani Katiya Riska Mandasari Riswanda, Cecep Rivanza Dhia Ramadhan Rizky Wulan Suci Rizky Wulan Suci Salsabila Putri Yuantari Saragih, Yulia Wahyuni Sinta Dewi Suci Hayaty Tiara Indah Sukmasari Vincenthya Verena Viorentina Wahyuni Nur Syahril Widyandari, Regina Rhisanty Wiwin Aminah Yana Ayu Pradana Yana Ayu Pradana, Yana Ayu Yeny Ekaristi Purba Zhafira, Faza Fariha Zukhruf Ramadhani