| By: | Tetsuya Adachi (Economist, Institute for Monetary and Economic Studies, Bank of Japan (currently, Deputy Director, Prudential Standards Office, Supervisory Coordination Division, Supervisory Bureau, Financial Services Agency, Government of Japan, E-mail: tetsuya.adachi@fsa.go.jp)); 
Yoshihiko Uchida (Director and Senior Economist, Institute for Monetary and Economic Studies, Bank of Japan (currently, Director, Supervisory Coordination Division, Supervisory Bureau, Financial Services Agency, Government of Japan, E-mail: yoshihiko.uchida@fsa.go.jp)) | 
| Abstract: | Wrong-way risk arises when an unexpected adverse change in interdependency 
among financial products or financial variables (such as interest rates, 
equities, exchange rates, credits, and commodities) triggers huge losses in 
portfolios. During the global financial crisis of 2007-09, financial 
institutions suffered huge losses due to the materialization of wrong-way 
risk. While its importance has been recognized by market participants, 
however, they have not reached a consensus on how to model and measure it. 
This paper proposes a method to model wrong-way risk in pricing and risk 
management and investigate the mechanism in which it can generate booms and 
busts in security prices. This paper assumes that there exist two types of 
investors with differing views on the management of the wrong-way risk and 
that they trade a derivative security with two underlying assets. The prudent 
(imprudent) investors are supposed to have a heavy (thin) tail structure in 
the joint distributions of risky assets in their models. This assumption 
implies that the reservation value on the security held by imprudent investors 
is higher than that by prudent investors. In this setup, a numerical analysis 
shows that (1) as time passes from the latest materialization of wrong-way 
risk and many investors tend to be imprudent, the market price is bidden up; 
and (2) once the wrong-way risk materializes, many imprudent investors realize 
the necessity for prudent management of wrong- way risk and thus the price 
drops suddenly to the lowest level. | 
| Keywords: | Wrong-way risk, Systemic risk, Jump-diffusion process, Asset pricing, Market microstructure | 
| JEL: | G12 G13 G32 | 
| Date: | 2015–07 | 
| URL: | http://d.repec.org/n?u=RePEc:ime:imedps:15-e-11&r=mst |