High-frequency trading and regulatory policies. A tale of market stability vs. market resilience

by Sandrine Jacob Leal and Mauro Napoletano

Over the past decades, high-frequency trading (HFT) has sharply increased in US and European markets. HFT represents a major challenge for regulatory authorities, partly because it encompasses a wide array of trading strategies (AFM (2010); SEC, 2010), and partly because of the big uncertainty yet surrounding the net benefits it has for financial markets (Lattemann and al. (2012); ESMA (2014); Aguilar, 2015). Continue reading “High-frequency trading and regulatory policies. A tale of market stability vs. market resilience”

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The Janus-Faced Nature of Debt

by Mattia Guerini, Alessio Moneta, Mauro Napoletano, Andrea Roventini

The financial and economic crises of 2008 have been intimately interwined with the dynamics of debt. As a matter of fact, a research by Ng and Wright (2013) reports that in the last thirty years all the U.S. recessions had financial origins. Continue reading “The Janus-Faced Nature of Debt”

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Rock around the Clock: an explanation of flash crashes

Sandrine Jacob Leal,[1] Mauro Napoletano,[2] Andrea Roventini,[3]  Giorgio Fagiolo[4]

On May 6 2010, contemporaneously with the unprecedented price decrease of the E-Mini S&P500[5], many US equity indices, including the Dow Jones Industrial Average, nosedived by more than 5% in few minutes, before recovering much of the loss. During this “flash crash”, most asset prices lost any informational role, as over 20,000 trades across more than 300 securities were executed at prices more than 60% away from their values just moments before. Many were executed at prices of a $0.01 or less, or as high as $100,000, before prices of those securities returned to their “pre-crash” levels (CFTC and SEC, 2010). Continue reading “Rock around the Clock: an explanation of flash crashes”

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Economic policy-making tools for pre- and post-crisis periods

by Zakaria Babutsidze and Mauro Napoletano

The worldwide financial crisis has questioned the relevance of economic models that are currently used by central bankers and macro analysts. In contrast, the recent economic events seem to be better described by models featuring boundedly rational heterogeneous agents and wherein markets do not necessarily clear at all times. Agent Based Models (ABMs) are a new class of models that embed all the above features, and therefore qualify as a promising alternative to conventional models. Continue reading “Economic policy-making tools for pre- and post-crisis periods”

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