RT Journal Article T1 Evaluation of the performance of Spanish family businesses portfolios A1 Otero González, Luis A1 Querentes Hermida, Raquel Esther A1 Durán Santomil, Pablo A1 López Penabad, Celia K1 Family businesses K1 Performance K1 Risk K1 Impact of sustainability K1 Quality factor AB This study aims to assess the performance and risk of portfolios comprised of Spanish family businesses (FBs) when sustainability and quality factors are considered. To achieve this objective, several portfolios were considered, and their results were compared against the benchmark, estimating several GARCH models and the extended six-factor model of Fama and French for the period 2018-2023. The results demonstrated that investing in FB provides a higher return than the index, and that the portfolio that considers quality is the one that presents a better performance. However, the inclusion of sustainability negatively impacts the portfolio's performance. These results are relevant for investors, such as managers interested in creating portfolios or developing attractive financial products in terms of risk and return. PB Emerald SN 2043-6238 YR 2024 FD 2024 LK https://hdl.handle.net/10347/39951 UL https://hdl.handle.net/10347/39951 LA eng NO Otero González, L., Querentes Hermida, R.E., Durán Santomil, P. and López Penabad, C. (2024), "Evaluation of the performance of Spanish family businesses portfolios", Journal of Family Business Management, Vol. 14 No. 6, pp. 1295-1315. https://doi.org/10.1108/JFBM-02-2024-0036 NO This is the manuscript of an article that has been accepted for publication NO This study was funded by the Galician Regional Government (No: ED431C 2020/18) and co-funded by the European Regional Development Fund (ERDF/FEDER) for the period 2020–2023; the Ministry of Science, Innovation and Universities (MCIU); the Spanish State Research Agency (AEI) and the European Regional Development Fund (RTI2018-100702-B-I00 MCIU/AEI/FEDER, UE). DS Minerva RD 30 abr 2026