Ms.Elena Loukoianova

Ms.Yevgeniya Korniyenko

The paper examines the impact of unconventional monetary policy measures (UMPMs) implemented since 2008 in the United States, the United Kingdom, Euro area and Japan— the Systemic Four—on global monetary and liquidity conditions. Overall, the results show positive significant relationships. However, there are differences in the impact of the UMPMs of individual S4 countries on these conditions in other countries. UMPMs of the Bank of Japan have positive association with global liquidity but negative association with securities issuance. The quantitative easing (QE) of the Bank of England has the opposite association. Results for the quantitative easing measures of the United States Federal Reserve System (U.S. Fed) and the ECB UMPMs are more mixed.

The Impact of Unconventional Monetary Policy Measures by the Systemic Four on Global Liquidity and Monetary Conditions

Mr.Christian Schmieder

Mr.Nassim N. Taleb

Mr.Elie Canetti

Mr.Tidiane Kinda

This paper presents a simple heuristic measure of tail risk, which is applied to individual bank stress tests and to public debt. Stress testing can be seen as a first order test of the level of potential negative outcomes in response to tail shocks. However, the results of stress testing can be misleading in the presence of model error and the uncertainty attending parameters and their estimation. The heuristic can be seen as a second order stress test to detect nonlinearities in the tails that can lead to fragility, i.e., provide additional information on the robustness of stress tests. It also shows how the measure can be used to assess the robustness of public debt forecasts, an important issue in many countries. The heuristic measure outlined here can be used in a variety of situations to ascertain an ordinal ranking of fragility to tail risks.

Ms.Elena Loukoianova

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