Leads and lags in sovereign credit ratings

R Alsakka, O Ap Gwilym - Journal of Banking & Finance, 2010 - Elsevier
… Author links open overlay panel Rasha Alsakka a , Owain ap Gwilym b … Cantor and Packer,
1996, Alsakka and ap Gwilym, 2009 show that rating disagreements across agencies are …

Modelling sovereign credit ratings: Neural networks versus ordered probit

…, D Crabbe, S Thomas, O Ap Gwilym - Expert systems with …, 2006 - Elsevier
Sovereign credit ratings are becoming increasingly important both within a financial regulatory
context and as a necessary prerequisite for the development of emerging capital markets. …

The impact of sovereign rating actions on bank ratings in emerging markets

G Williams, R Alsakka, O Ap Gwilym - Journal of Banking & Finance, 2013 - Elsevier
This paper analyses the effects of sovereign rating actions on the credit ratings of banks in
emerging markets, using a sample from three global rating agencies across 54 countries for …

Rating agencies' signals during the European sovereign debt crisis: Market impact and spillovers

R Alsakka, O Ap Gwilym - Journal of Economic Behavior & Organization, 2013 - Elsevier
The ongoing financial crisis has drawn considerable attention to the role of credit rating
agencies in the financial system. We examine how the foreign exchange market reacts to …

The sovereign-bank rating channel and rating agencies' downgrades during the European debt crisis

R Alsakka, O ap Gwilym, TN Vu - Journal of international money and …, 2014 - Elsevier
We investigate the rating channel for the transmission of changes in sovereign risk to the
banking sector, analysing data from Moody's, S&P and Fitch before and during the European …

Extreme price clustering in the London equity index futures and options markets

O Ap Gwilym, A Clare, S Thomas - Journal of Banking & Finance, 1998 - Elsevier
Price clustering and optimal tick sizes have recently been topics of substantial public policy
interest, and this paper presents evidence which is relevant to both debates. Around 98% of …

Foreign exchange market reactions to sovereign credit news

R Alsakka, O ap Gwilym - Journal of International Money and Finance, 2012 - Elsevier
We analyse the reaction of the foreign exchange spot market to sovereign credit signals by
Fitch, Moody’s and S&P during 1994–2010. We find that positive and negative credit news …

The use of credit ratings in investment management in the US and Europe

R Cantor, O Ap Gwilym, S Thomas - Available at SSRN 996133, 2007 - papers.ssrn.com
We analyse a survey of 200 plan sponsors and investment managers in the US and Europe
regarding the use of credit rating guidelines in the conduct of their investment activities. We …

Heterogeneity of sovereign rating migrations in emerging countries

R Al-Sakka, O ap Gwilym - Emerging markets review, 2009 - Elsevier
This is a unique study of the relationship between emerging sovereign rating migrations and
the sources of rating heterogeneity. It employs data from six international rating agencies …

The intraday relationship between volume and volatility in LIFFE futures markets

OAP Gwilym, D McMillan, A Speight - Applied Financial Economics, 1999 - Taylor & Francis
This paper examines the intraday behaviour of five-minute FTSE-100, Short Sterling and Long
Gilt LIFFE futures returns volatility and volume. The intraday patterns identified exhibit a U-…