Abstract :
This study aims to determine the effect sof market timing ability, stock selection skill, fund size and fund longevity tothe performance ofSharia mixed mutual Fund. The population of this study is a Sharia fund registered inthe Financial Services Authority for period 2014-2018. This study used purposive sampling techniques and samples selected by 13 Mutual funds. The analysis of data on this study used multiple linear regression. The results showed that simultaneously Market timing ability, stock selection skill, Fundsize and Fund longevity significantly affectedon The Sharia mixed mutual fund performance. On a partial test, Market timing ability is positively and significantly impacted by sharia-mixed mutual fund performance.Stock Selection Skillsis positively and insignificantin the performance of Sharia-mixed mutual funds.Fund size is negatively and insignificant in the performance of sharia-mixed mutual funds. Fund Longevity is negatively and insignificant impact on Sharia-mixed mutual fund performance .