Stochastic Frontier Analysis

  • 详情 Does rural banking competition affect agricultural productivity? Causal evidence from China
    Rural banking competition may promote or hinder agricultural total factor productivity (TFP). We analyze a novel dataset on all commercial bank branches in rural China, combined with measures of productivity based on stochastic frontier analysis. To identify causality, we use: 1) an instrumental variable approach based on the administrative division of banks, and 2) a propensity score matching difference-in-difference approach exploiting banking de-regulations in 2009. Both methods reveal that competition has a positive impact on TFP. A heterogeneity analysis finds that the effect is primarily significant along the Beijing-Kowloon railway and its East side. Technology adoption is the typical channel through which lending is hypothesized to impact TFP. We find that the positive effect of competition is larger in areas with greater technology use, but we find an insignificant direct impact of concentration on technology adoption, suggesting the channels of effect may be more complex than previously thought.
  • 详情 A Study on the Primary Market Pricing Efficiency after the Reform of China's IPO
    The paper estimates the primary market pricing efficiency of China’s IPO after the IPO reform in June 2009, based on the stochastic frontier analysis. The results show that IPO pricing is not fully effective, and discover the existence of “deliberate underpricing”. The average pricing efficiency of China's IPO has reached 0.85, which is close to the level of the mature capital market; To certain extent, we can say that the reform of China's IPO has achieved the initial success. We also found that earnings per share and price earnings ratio are the greatest influencing factors. And there is no underwriter reputation in China. For different markets, we disclosed that, IPO pricing efficiency values in Growth Enterprise Market and Small and Medium Enterprise Board are substantially higher than the Main Board market. The paper analyzes the causes, and then gives some suggestions for the reform of China's IPO.