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The objective of this study is to assess the performance of the DANA application as an electronic wallet and analyse the effect of managing the application's securities on user decision-making when using the application in the setting of the digital economy based on the sovereignty of the Unitary State of the Republic of Indonesia (NKRI). The study method employed was a qualitative literature review. The data was acquired by consulting relevant scholarly publications on Google Scholar to thoroughly comprehend the advancement of knowledge about the subject matter and identify areas of research that require further exploration. The hypothesis analysis revealed a significant correlation between the advantages of the digital economy, the growth of the digital economy, and the factors affecting the utilisation of E-Wallets or Dana apps within the Homeland. The development of the digital economy enhanced a nation's ability to withstand challenges by promoting economic sovereignty, cybersecurity and inclusive economic growth. Various factors, including data security and the rise of the digital economy, affected the utilisation of Dana applications. In addition, these factors affected the execution of national values. Utilising the Dana application as a digital wallet strengthened the nation's economic sovereignty and enhanced well-being and financial inclusivity across all segments of Indonesian society. Hence, comprehending the security management of the application and users' perspective regarding it is crucial in affecting users' trust and their decision to embrace the Dana application as their preferred E-Wallet for supporting the NKRI sovereignty-based digital economy.

Penelitian ini bertujuan untuk membentuk portofolio saham yang optimal menggunakan Model Indeks Tunggal berdasarkan saham-saham rekomendasi PT Sucor Sekuritas, mengetahui besarnya proporsi dana yang harus diinvestasikan pada masing-masing saham, serta mengetahui besarnya return realisasi dan risiko dari portofolio optimal saham yang terbentuk. Penelitian ini merupakan penelitian kuantitatif deskriptif dengan sampel 11 (sebelas) saham rekomendasi PT Sucor Sekuritas periode Januari – Desember 2022. Hasil penelitian menunjukkan terdapat 2 (dua) saham penyusun portofolio optimal yaitu saham INDF dan ICBP. Proporsi dana masing-masing saham pembentuk portofolio optimal yaitu saham INDF sebesar 82% dan saham ICBP sebesar 18%. Kedua saham tersebut memiliki return sebesar 0,0638 atau 6,38% dengan risiko portofolio yang akan ditanggung investor atas investasi sebesar 0,00002 atau 0,02%.

Stock Prices Fluctuation affected by market conditions indicates that the company is not doing well. Fluctuations in the share price of Sinarmas Sekuritas Indonesia are influenced by unstable market conditions. The aim of this study is to find out whether the stocks which have been recommended by PT. Sinarmas Sekuritas Indonesia 2021 is superior or inferior. The data used in this study were in the form of secondary data contained in the Market Outlook published by PT. Sinarmas Sekuritas Indonesia, which consisted of 33 stocks during the research period. Moreover, this type of research used case studies. The result of the study shows that the value of the regression constant is negative with a significance value smaller than the significance level of 0.05. Thus, it can be concluded that the performance of PT Sinarmas Sekuritas Indonesia's stock portfolio for the January–December 2021 period is inferior which shows that the performance of the portfolio with the index has bad performance. In addition, companies whose shares have good performance are expected to maintain their company's performance, while companies that have bad performance can improve their company's performance.