Frequency spillover effects between natural gas market, uncertainty, and stock market: new evidence from China

This study investigates the correlation between the natural gas market, uncertainty, and the stock market in China. The research uses the BK model and considers both high- and low-frequency bands. According to the dynamic spillover indices and connectedness network, natural gas market, uncertainty, and stock market spillover influences are concentrated in the high-frequency band within 12 trading weeks and minor in the low-frequency band. The natural gas market receives information in the return model. In contrast, the uncertainty of the financial and energy market is the primary transmitter and substantially impacts the natural gas market return. In the volatility model, the natural gas market remains the information receiver but is affected by financial market uncertainty and stock market volatility. During the financial crisis and the COVID-19 pandemic, results indicate that financial market uncertainty, energy market uncertainty, and stock market volatility exerted a substantial influence on the natural gas market.