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All Journal Applied Accounting and Management Review
Kenneth Pinandhito
(Orcid ID: 0000-0003-3561-8030) Politeknik Negeri Semarang
Decision Sciences, Operations Research & Management Education

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DO IDX30 INVESTMENT STOCKS OFFER OPTIMAL RISK–RETURN TRADEOFFS? A POST-COVID STUDY Kenneth Pinandhito; Nguyen Thi Kim Lien; Dina Yeni Martia; Alvianita Gunawan Putri; Junaedi Adi Prasetyo
Applied Accounting and Management Review (AAMAR) Vol. 5 No. 1 (2026): APPLIED ACCOUNTING AND MANAGEMENT REVIEW (AAMAR)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/aamar.v5i1.7578

Abstract

This study aims to analyze the formation of an optimal portfolio of stocks based on the Markowitz model in IDX Quality30 companies post covid from January 2021 to December 2022. The secondary data used are daily closing stock prices. The samples in this study were 19 companies. The analysis results show that ten stocks are optimal portfolio candidates: ASII, BBCA, BMRI, ITMG, KLBF, MIKA, PTBA, SIDO, TLKM, and UNTR. The optimal portfolio formation of the Markowitz model consists of 10 issuers with proportions, namely SIDO 30.81%, TLKM 15.61%, MIKA 12.09%, KLBF 11.90%, BBCA 8.64%, ASII 7.39%, PTBA 5.35%, UNTR 3.73%, ITMG 3.53%, BMRI 0.94%. The proportion of funds generated can provide an expected return value of 0.047% with a risk level (standard deviation) of 0.885%.
Co-Authors Alvianita Gunawan Putri Dina Yeni Martia Junaedi Adi Prasetyo Nguyen Thi Kim Lien