Investigating the performance and sustainability of active investment funds in the Iranian capital market and the position of funds in attracting investorsGhahramanzadeh, Jaber (Avtor) Shahvalizadeh, Adel (Avtor) Cajnko, Petra (Avtor) returnsustainabilityactive investment fundsIranian capital marketattracting investorsInvestment funds are among the effective instruments in the capital market that are established by banks and brokerage companies and play an effective role in developing the market and increasing investor participation. They are generally classified as low-risk instruments suitable for direct participation by less experienced investors. Accordingly, the purpose of this research is to examine the efficiency and sustainability of active investment funds in the Iranian capital market and the position of the funds in attracting investors in 125 investment funds from 2014 to the end of 2023. Also, the research is applied in terms of purpose and descriptive-analytical in terms of method. The method of collecting information in theoretical foundations is the library method and in the section of testing hypotheses, the method of document mining of financial statements.Excel software was used in the process of data preparation, modification, and processing, and Eviews software, version 11, was used to calculate descriptive and inferential statistics. The research hypotheses were tested using regression analysis and a mixed data approach. The results of the study indicate that the efficiency and sustainability of active investment funds in the Iranian capital market are positively and significantly related to investor attraction and its position.20252025-08-23 03:08:13Znanstveno delo94628UDK: 330.322:330.143(55)COBISS_ID: 245048579DOI: 10.32038/NCAF.2025.13.03ISSN pri članku: 2717-8722sl