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All Journal Lateralisasi Journal of Creative Student Research Dinamika Sosial: Jurnal Pengabdian Masyarakat Dan Transformasi Kesejahteraan Journal of Islamic Economics and Finance
Alda Lorenza
Universitas Muhammadiyah Bengkulu
Religion Agriculture, Biological Sciences & Forestry Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences Transportation Other

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EFISIENSI PORTOFOLIO DENGAN TEORI MARKOWITZ: STUDI PADA SAHAM BLUE CHIP INDONESIA Azzah Nabila; Alda Lorenza; Fiona Gea Az-Zahra; Yusmaniarti Yusmaniarti
Journal of Islamic Economics and Finance Vol. 2 No. 2 (2025): November
Publisher : Yayasan Nuraini Ibrahim Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70248/joieaf.v2i2.3323

Abstract

Penelitian ini bertujuan untuk menganalisis efisiensi portofolio saham blue chip Indonesia dengan menggunakan Teori Markowitz serta mengkaji perannya dalam mengoptimalkan keseimbangan antara risiko dan tingkat pengembalian investasi. Metode penelitian yang digunakan adalah Systematic Literature Review (SLR) dengan menelusuri artikel ilmiah periode 2020–2025 melalui Google Scholar, kemudian diseleksi menggunakan kriteria inklusi dan dianalisis dengan pendekatan SPIDER (Sample, Phenomenon of Interest, Design, Evaluation, Research Type) untuk mengidentifikasi temuan-temuan empiris terkait penerapan Model Markowitz pada saham LQ-45 dan IDX30. Hasil penelitian menunjukkan bahwa Model Markowitz mampu membentuk portofolio efisien melalui pendekatan mean-variance dengan mempertimbangkan varians dan kovarians antar saham, sehingga diversifikasi yang dilakukan tidak hanya menyebar aset, tetapi juga mengoptimalkan kombinasi berdasarkan korelasi antar saham; portofolio optimal yang terbentuk umumnya hanya terdiri dari sebagian saham blue chip yang memiliki kontribusi risiko paling rendah terhadap portofolio secara keseluruhan, serta menghasilkan kombinasi return maksimal pada tingkat risiko tertentu atau risiko minimal pada tingkat return yang diharapkan. Selain itu, dibandingkan dengan Model Indeks Tunggal, Model Markowitz memiliki keunggulan dalam ketepatan analisis kovarians, meskipun lebih kompleks dalam perhitungan. Simpulan, bahwa Teori Markowitz efektif sebagai dasar pembentukan portofolio saham blue chip yang rasional dan terukur di pasar modal Indonesia, karena mampu meningkatkan efisiensi investasi melalui optimasi risiko dan return, sehingga dapat menjadi acuan strategis bagi investor dalam pengambilan keputusan investasi.
RAGAM BAHASA INDONESIA DAN PEDOMAN UMUM EJAAN BAHASA INDONESIA (PUEBI) Niken Ardelia Zamrizal; Bayu Erlangga; Ira Yunita; Nensi Yuniarti; Selpi Julianti; Dwi Apriliani Ningsih; Agusalim; Alda Lorenza; Rapi Pajri; Novitri Kurniati; Tiara Anjellina Putri; Nadia Puspita Sari; Jeni Wandira Manulang; Putri Reza Utami
Lateralisasi Vol. 13 No. 2 (2025): DESEMBER (2025)
Publisher : Fakultas Keguruan dan Pendidikan Universitas Muhammmadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/lateralisasi.v13i2.8820

Abstract

Bahasa Indonesia memiliki peran penting sebagai alat komunikasi dan identitas bangsa. Dalam praktiknya, penggunaan bahasa ini sangat beragam, tergantung pada situasi, media, serta pengaruh sosial dan budaya. Artikel ini menggabungkan dua kajian, yakni mengenai keragaman bentuk bahasa Indonesia dan pentingnya Pedoman Umum Ejaan Bahasa Indonesia (PUEBI) sebagai acuan penulisan yang benar. Pembahasan mencakup jenis ragam bahasa, mulai dari yang formal hingga nonformal, serta tantangan seperti pengaruh bahasa asing, rendahnya kesadaran berbahasa, hingga minimnya konten berbahasa Indonesia yang berkualitas. Sementara itu, kajian PUEBI menyoroti pentingnya pemahaman kaidah penulisan, ejaan, dan tanda baca dalam membentuk komunikasi yang efektif. Melalui pendekatan kualitatif berbasis studi literatur, tulisan ini merekomendasikan perlunya edukasi berkelanjutan, pemanfaatan media digital, dan kebijakan yang mendorong penggunaan bahasa Indonesia secara baik dan benar.
Peran Pengungkapan Akuntansi Lingkungan pada Stock Return di Perusahaan GO Publik di Indonesia 2021-2024 Alda Lorenza; Repaldo Repaldo; Dzakira Isratun Nisa
Journal of Creative Student Research Vol. 3 No. 6 (2025): Journal of Creative Student Research
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jcsr-politama.v3i6.5804

Abstract

This study aims to examine the role of environmental accounting disclosure on stock returns of publicly listed companies in Indonesia. Growing awareness of environmental issues has encouraged companies to focus not only on financial performance but also on transparency regarding the environmental impacts of their operations. Environmental accounting disclosure represents a form of corporate responsibility that provides relevant information for stakeholders, particularly investors, in assessing business sustainability.This research applies a systematic literature review using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) approach. The reviewed articles consist of empirical studies published between 2021 and 2025 that are relevant to environmental accounting disclosure and stock returns. Data were collected through Google Scholar using specific keywords, and selected articles were further analyzed to identify research patterns and consistency of findings.The results indicate that environmental accounting disclosure does not have a significant effect on stock returns of publicly listed companies in Indonesia. This finding is influenced by several factors, including investors’ tendency to prioritize short-term financial gains, while environmental information is generally long-term oriented. In addition, environmental disclosure practices in Indonesia remain voluntary, resulting in variations in disclosure quality and completeness across companies. Consequently, such information has not been able to consistently influence investment decisions. The findings suggest that although environmental accounting disclosure plays an important role in supporting corporate sustainability, its impact on stock returns remains limited.
Edukasi Gemar Menabung untuk Meningkatkan Literasi Keuangan Sejak Dini pada Siswa SD Patria Dharma 2026 Alda Lorenza; Adib Luthi Fadhilah Syarthony; Novrian Cahyo Nugroho; Fitriah Fitriah
Dinamika Sosial : Jurnal Pengabdian Masyarakat dan Transformasi Kesejahteraan Vol. 3 No. 3 (2026): September: Dinamika Sosial : Jurnal Pengabdian Masyarakat dan Transformasi Kese
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/dinsos.v3i3.3639

Abstract

Introducing financial literacy at an early age is important to help students develop responsible and wise financial management habits. This community service activity aimed to improve the financial literacy of elementary school students through education on the importance of saving from an early age. The activity was conducted at SD Patria Dharma, Sumur Meleleh Village, Bengkulu, targeting second-grade students. The activity employed a conventional method consisting of three stages: planning, implementation, and evaluation. The educational materials included the concept and benefits of saving, ways to allocate money regularly, setting savings goals, distinguishing between needs and wants, and understanding the consequences of wasteful spending. The materials were delivered through presentations, simple calculation examples, question-and-answer sessions, and hands-on activities adapted to the characteristics of elementary school students. Evaluation was conducted through questions and practical activities to assess students’ understanding before and after the educational session. The results indicated that students demonstrated improved understanding of the importance of saving, regular money allocation, and prioritizing needs. The activity also encouraged students to develop disciplined, frugal, and responsible financial behaviors in their daily lives.
Co-Authors Adib Luthi Fadhilah Syarthony Agusalim Azzah Nabila Bayu Erlangga Dwi Apriliani Ningsih Dzakira Isratun Nisa Fiona Gea Az-Zahra Fitriah Fitriah Ira Yunita Jeni Wandira Manulang Kurniati, Novitri Nadia puspita sari Nensi Yuniarti Niken Ardelia Zamrizal Novrian Cahyo Nugroho Putri Reza Utami Rapi Pajri Repaldo Repaldo Selpi Julianti Tiara Anjellina Putri