Risk spillovers in international equity portfolios

April 20, 2012
Issue 2012-03

Summary

We define risk spillover as the dependence of a given asset variance on the past covariances and variances of other assets. Building on this idea, we propose the use of a highly flexible and tractable model to forecast the volatility of an international equity portfolio.

According to the risk management strategy proposed, portfolio risk is seen as a specific combination of daily realized variances and covariances extracted froma high frequency dataset, which includes equities and currencies. In this framework, we focus on the risk spillovers across equities within the same sector (sector spillover), and fromcurrencies to international equities (currency spillover). We compare these specific risk spillovers to a more general framework (full spillover) whereby we allow for lagged dependence across all variances and covariances. The forecasting analysis shows that considering only sector- and currency-risk spillovers, rather than full spillovers, improves performance, both in economic and statistical terms.

Download file now

The file can be downloaded with the button below.

Issue:
03
Pages:
42
JEL classification:
C13, C16, C22, C51, C53, G17
Keywords:
Risk spillover, portfolio risk, currency risk, variance forecasting, international portfolio, Wishart distribution
Year:
2012

Additional files

Related content

Author(s)

  • Matteo Bonato

  • Massimiliano Caporin

  • Angelo Ranaldo

Your settings

Required: These cookies (e.g. for storing your IP address) cannot be rejected as they are necessary to ensure the operation of the website. These data are not evaluated further.
Analytics: If you consent to this category, data such as IP address, location, device information, browser version and site visitor behaviour will be collected. These data are evaluated for the SNB's internal purposes and are kept for two years.
Third-party: If you consent to this category, third-party services (used, for example, to add social multimedia content to the SNB's website) will be activated which collect personal data, process these data, disclose them abroad - worldwide - and place cookies. The relevant data protection regulations are linked in the 'Privacy statement for the website of the Swiss National Bank'.

Choose your preferred settings:

This website uses cookies, analytics tools and other technologies to provide requested features, content and services, to personalise the content shown, to provide links to social media, and to analyse the use of the website in anonymised form for the purposes of improving usability. Personal data are also disclosed abroad - worldwide - to video service providers and the analytics tools of these providers are used. More information is available under 'Manage settings'.