Are top managers important for firm performance and idiosyncratic risk? Evidence from sharia vs non‐sharia‐compliant firms in the UK and Pakistan

We examine the impact of top managers on performance and idiosyncratic risk of the sharia†compliant firms in the UK and Pakistan by constructing a manager–firm matched panel data and then tracking the role of individual top managers across different firms. The results regarding the individual effects on performance by a particular firm show that there exists a significant difference for managers who move from a non†sharia to a sharia†compliant firm. However, this difference is not significant for managers who move from a sharia†compliant firm to another sharia firm. Policy implications of the findings are discussed.