The coronavirus: Black swan and endowment shock

An external shock caused by an extraordinary and unpredictable effect, a “black swan” like COVID-19, is analyzed. It implies shift of endowment in financial markets, its effects on economic inequality, deepening total income. Theoretical models are proposed, where the public sector seeks alternatives to lockdown, allowing self-regulation economy, taxing capital or seeking joint policies with other states. In first model, economy self-regulating help sector. Nonetheless, inequality generated models, tries intervene. First, minimizes capital, redistribution wealth income, tax rate that depends only differential impacts black swan different markets. Finally, coordination between countries affected proposed prevent swans negative externalities. This feasible depending rate, household benefits administration costs