Constant-coefficient regression models have been applied extensivelyin statistics, while various random-coefficient models have alsoemerged as viable competitors in various specific fields. model inwhich the parameter of explanatory variables can be expressed as The QR, and that the relationshipbetween CEO stock-based pay and firm performance in firmsmight change in the tail regions. Following this line of thought, thisinvestigation employs the QR to examine the non-uniform impact of CEO stockbasedpay on performance across various performance quantile conditions.