Share This Author
DebtRank: Too Central to Fail? Financial Networks, the FED and Systemic Risk
- S. Battiston, Michelangelo Puliga, Rahul Kaushik, P. Tasca, G. Caldarelli
- EconomicsScientific reports
- 2 August 2012
DebtRank, a novel measure of systemic impact inspired by feedback-centrality, is introduced, finding that a group of 22 institutions, which received most of the funds, form a strongly connected graph where each of the nodes becomes systemically important at the peak of the crisis.
Liaisons Dangereuses: Increasing Connectivity, Risk Sharing, and Systemic Risk
A Climate Stress-Test of the Financial System
- S. Battiston, Antoine Mandel, I. Monasterolo, Franziska Schütze, Gabriele Visentin
- 11 July 2016
The urgency of estimating the impact of climate risks on the financial system is increasingly recognized among scholars and practitioners. By adopting a network approach to financial dependencies, we…
The Network of Global Corporate Control
It is found that transnational corporations form a giant bow-tie structure and that a large portion of control flows to a small tightly-knit core of financial institutions that can be seen as an economic “super-entity” that raises new important issues both for researchers and policy makers.
A model of a trust-based recommendation system on a social network
- F. Walter, S. Battiston, F. Schweitzer
- Computer ScienceAutonomous Agents and Multi-Agent Systems
- 28 November 2006
The model is that agents use their social network to reach information and their trust relationships to filter it and it is identified that network density, preference heterogeneity among agents, and knowledge sparseness to be crucial factors for the performance of the system.
Default Cascades: When Does Risk Diversification Increase Stability?
- S. Battiston, Domenico Delli Gatti, M. Gallegati, B. Greenwald, J. Stiglitz
- 19 September 2011
We explore the dynamics of default cascades in a network of credit interlink-ages in which each agent is at the same time a borrower and a lender. When some counterparties of an agent default, the…
Credit Chains and Bankruptcy Propagation in Production Networks
DebtRank: A Microscopic Foundation for Shock Propagation
It is found that network effects can generate an amplification of exogenous shocks of a factor ranging between three (in normal periods) and six (during the crisis) when the authors stress the system with a 0.5% shock on external assets for all banks.
Web Search Queries Can Predict Stock Market Volumes
- Ilaria Bordino, S. Battiston, G. Caldarelli, M. Cristelli, Antti Ukkonen, Ingmar Weber
- Computer SciencePloS one
- 21 October 2011
It is shown that daily trading volumes of stocks traded in NASDAQ-100 are correlated with daily volumes of queries related to the same stocks, and query volumes anticipate in many cases peaks of trading by one day or more.
Default Cascades in Complex Networks: Topology and Systemic Risk
- Tarik Roukny, H. Bersini, H. Pirotte, G. Caldarelli, S. Battiston
- EconomicsScientific reports
- 26 September 2013
It is found that, in general, topology matters only – but substantially – when the market is illiquid, and that scale-free networks can be both more robust and more fragile than homogeneous architectures.