Extreme Directional Spillovers between Investor Attention and Green Bond Markets

This paper studies how the spillovers between investor attention and green bond performance vary across normal and extreme market conditions. Using the quantile connectedness model, we document a substantial increase in the spillovers between green bond returns and investor attention at the lower and upper tail of the distributions. These spillovers are time-varying, asymmetric, and significantly influenced by stock, oil, bond market volatility, and economic policy uncertainty. Moreover, using the time-varying robust Granger causality test, we find that the Granger-causality relationship between the attention indices and the green bond returns seems to be more pronounced after the onset of the COVID-19 pandemic.