Supply chain buyback contract under asymmetric risk aversion information with downside-risk control

A buyback contract between a upstream supplier and a downstream retailer in a two stages supply chain model with downside-risk control is designed and modeled, both of whom are risk-averse, and the retailer´s risk aversion structure information is uncertainty for the supplier, who only have a prior probability distribution. The supplier´s optimal contracts under full information and asymmetric information are derived and compared to investigate the impact of risk aversion and information asymmetry on supply chain performance. Accordingly, channel coordination would be proposed to achieve the optimal solutions of the system and new contracts are developed. Finally, an example verifies the effectiveness of the results.