<![CDATA[This study aims to provide information regarding investment decisions in the IDX30 stock index using the Capital Asset Pricing Model (CAPM) and Arbitrage Pricing Theory (APT) During the 2023-2024 period. The background of this research is based on the need for investors to betterr undestand stock conditions in relation to market risk and macroeconomic factors, perticularly interest rates and exchange rates. The research method applied is descriptive quantitative, which interprets data academically by describing and explaining the collected innformation without drawing general conclusions. The data collection technique used is secondary data. The research population consists of 30 IDX30 listed companies, with a sample of 23 companies that consistently remained in the effective constituents during 2023-2024. Data analysis was conducted using CAPM to measure expected return based on systematic risk (beta) and APT to asses stock sensitivity to economic factors. The findings indicate changes in stock positions categorized as undervalued or overvalued from to 2023 to 2024, both under CAPM and APT. This study illustrates that stock conditions may shift according to market dynamics, suggesting that investors should be cautious in selecting stock and consider both methods as a basis for long-term investment decisions.]]>
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