JISTech (Journal of Islamic Science and Technology)
Vol 11, No 1 (2026)

Investment Risk Analysis of Gold, the Indonesia Composite Index (IHSG), and BBCA Stock in Indonesia using the Value At Risk (Var) Method With A Variance–Covariance Approach

Tanjung, Aida Febriana (Universitas Islam Negeri Sumatera Utara Medan)
Hasibuan, Hani Maulida (Universitas Islam Negeri Sumatera Utara)
Kurahman, Panca Taufik (Universitas Islam Negeri Sumatera Utara)
Nasution, Fakhrur Rozi (Universitas Islam Negeri Sumatera Utara)
Lubis, Riri Syafitri (Universitas Islam Negeri Sumatera Utara)



Article Info

Publish Date
27 Apr 2026

Abstract

Investments in various financial instruments such as gold, the Indonesia Composite Index (IHSG), and individual stocks carry different levels of risk due to market price fluctuations. These differences require investors to understand potential risks in order to manage their portfolios optimally. Therefore, a quantitative risk measurement method is needed. Value at Risk (VaR) is a method used to estimate the maximum potential loss at a given confidence level and time horizon. This study aims to analyze and measure investment risk in gold, IHSG, and BBCA stock in Indonesia using the Value at Risk (VaR) method with a variance–covariance approach. The data consist of monthly closing prices from April 2024 to March 2025, implying a 1-month VaR horizon with confidence levels of 90%, 95%, and 99%. The results show that the VaR value at the 95% confidence level (1-month horizon) is (4,033.25) for gold, (8,064.47) for IHSG, and (7,931.17) for BBCA stock. At a higher confidence level of 99%, the VaR increases to (5,704.31) for gold, (11,405.74) for IHSG, and (11,217.20) for BBCA stock. These findings indicate that IHSG and BBCA stock have higher potential maximum losses compared to gold, consistent with their higher volatility levels. These results suggest that the variance–covariance VaR method provides measurable quantitative risk estimates across different confidence levels and time horizons, making it useful for investment decision-making and structured portfolio risk management.

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Journal Info

Abbrev

jistech

Publisher

Subject

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Materials Science & Nanotechnology Other

Description

Journal of Islamic Science and Technology (JISTech) is a peer reviewed academic journal, established in 2016 as part of the Universitas Islam Negeri Sumatera Utara, Medan, Indonesia. Dedicated to the publication of scholarly articles in various branches of Islam Science and Technology studies in, by ...