Quantile Connectedness: Modelling Tail Behaviour in Financial Networks

Full-Sample Spillover Index

This spillover index measures the percentage of the five-days-ahead forecast error variance for the system as a whole that is explained by bilateral spillovers

Larger values indicate stronger bilateral spillovers

The spillover index is much higher in both tails than in the centre of the conditional distribution

The spillover index evaluated at the conditional mean by OLS is shown as a dashed gray line

OLS overestimates spillover activity in the middle of the conditional distribution and underestimates it in both tails