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 |