This research examines how a sovereign rating revision of one country influences the economic growth rates of other countries. Rating revisions have significant output spillover effects: A one-notch upgrade (downgrade) prompts on average a significant downward revision of about 0.03% (0.07%) in the consensus forecast of annual economic growth rates of other countries in the two-month period after the event. The spillovers are transmitted through direct and indirect trade and financial linkages between event and non-event countries. The evidence indicates that a predominance of differential (common) spillovers leads upgrades (downgrades) to produce adverse output effects for other countries.
Journal of International Money and Finance, Vol.63, pp.48-63