Does residual state ownership increase stock return volatility? Evidence from China's secondary privatization

Using hand-collected data, we find residual state ownership is negatively related to stock return volatility, following China's secondary privatization initiated by the non-tradable share reform. Conservative corporate policies are channels through which residual state ownership reduces stock return volatility. Further, the volatility-mitigating effect is more prevalent in firms in which the government has greater influence on corporate decisions. However, the volatility-mitigating effect is temporary, lasting up to three years after state shares become fully tradable. The evidence suggests the government can send credible signals by retaining state ownership, which reduces investor uncertainty. However, investors must weigh the positive signaling effect of residual state ownership in reducing uncertainty, surrounding sudden policy changes, against the inefficiencies of state control.