A Study on the Relationship Between Bitcoin and Stock Market Volatility under Different Policy Environments — Comparison Between Chinese and US Markets
The increasing integration of Bitcoin with traditional stock markets makes understanding its impact on stock market volatility crucial. This paper constructs a GARCH-MIDAS model using data from the Shanghai Composite Index, the S&P 500 Index, and Bitcoin to investigate Bitcoin's influence under different regulatory environments. The results show that Bitcoin has a significant negative rela