Effectiveness of Price Limit on Stock Market Network: A Time-Migrated DCCA Approach

In this paper, we investigated the effectiveness of price limit on stock market with correlation study and complex network technology. We proposed a time-migrated DCCA cross-correlation coefficient which is beneficial to detect asynchronous correlations nonstationary time series. The constructed threshold method based DCCA. during crash period studied network. results indicate that ensures more relevant than equal-time method. An interesting finding has different effects at stages dynamic evolution. Market stabilization will be lowered systemic risk increased if enhanced. Such studies are for better understanding have significant contribution in reality.