In this paper we introduce a new way to estimate the spot volatility of high frequency foreign exchange data using the Hilbert-Huang Transform. We also propose and test a consistent spot volatility estimate in the presence of microstructure noise. The problem of assessing the validity of latent...

This study examines the spillover and connectedness network among the United States and the Association of Southeast Asian Nations (ASEAN)+6 stock market returns during times of uncertainty in the world economy, such as the COVID-19 pandemic and the conflict between Russia and Ukraine. The...