Profile

Professor of Finance

Professor ap Gwilym has published over ninety academic research articles. His work has appeared in many internationally recognised journals such as Journal of Banking and Finance, Journal of International Money and Finance, European Financial Management, Financial Analysts Journal, Journal of Futures Markets and Journal of Business Finance and Accounting. Previously he was Professor of Finance at Aberystwyth University until joining Bangor in 2008, and he has also held academic posts at the universities of Southampton and Swansea.

For Accounting & Finance, Bangor Business School is ranked 5th in the UK in The Guardian 2024 university rankings. The School is ranked 3rd in the UK in the 2023 Postgraduate Taught Experience Survey (PTES) for Business & Management.

Owain is a member of the management board of the Institute of European Finance (IEF) at Bangor. Within the IEF, he leads the Responsible Banking research planning group and is a member of the Credit Risk research planning group. Both groups involve productive collaborations among academic staff, doctoral students, emeritus staff, external associate members, regulators and industry.

He has engaged in projects with various organisations including CFA UK, Chartered Banker Institute, Financial Times, Fitch Learning, Fitch Ratings, InteractiveData, Inquire, Moody’s Investors Service, Risk Books and Scottish Widows.

He is an associate editor of the European Journal of Finance and has been editor of World Banking Abstracts. 

Qualifications

PhD (Finance), University of Wales (Swansea).

BSc (Management Science), University of Wales (Swansea).

Roles within Bangor Business School

• Deputy Head of School.
• Postgraduate programme director in accounting, banking, business data analytics and finance.
• Link tutor with Bangor University International College (BUIC).

Professor Owain ap Gwilym

Division: Financial Studies

Location: Room 1.17, Hen Goleg

Telephone: 01248 38 2176

Email: owain.apgwilym@bangor.ac.uk

Research Interests

Credit risk and credit ratings, European banking, Investment and financial technology.

Research Supervision

I have supervised 25 completed PhDs.

Some of my PhD graduates have subsequently held academic posts (up to professorial level) at the universities of Aberdeen, Bath, East Anglia, Essex, Heriot-Watt, Newcastle, Reading, Southampton, Strathclyde, Surrey, Swansea and Vlerick, amongst others.

Teaching

Postgraduate Teaching

• International Financial Markets (ABJ/ASB-4403).
• Financial Technology (ABJ/ASB-4008).
• FinTech with Project (ABJ/ASB-4013).
• Applied Business Projects (ABJ/ASB-4904/5).
• Finance Dissertation (co-ordinator, ABJ/ASB-4909).
• Chartered Financial Analyst (CFA) Pathway (co-ordinator, ABJ/ASB-4910).
• MSc Dissertations (co-ordinator).
• Core Competencies for Postgraduate Researchers (ASB-4931).
• Current Issues in Business & Management (ASB-4936).

Undergraduate Teaching

• Financial Technology (ASB-3008, ASB-3010).

Credit risk and ratings, European banking, Investment and financial technology.

2024

• CyhoeddwydThe evolution and determinants of the non-performing loan burden in Italian banking
  Pancotto, L., ap Gwilym, O. & Williams, J., Ebr 2024, Yn: Pacific-Basin Finance Journal. 84, 102306.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2023

• CyhoeddwydDeal! Market reactions to the agreement on the EU Covid-19 recovery fund
  Pancotto, L., ap Gwilym, O. & Molyneux, P., 31 Gorff 2023, Yn: Journal of Financial Stability.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTechnical analysis as a sentiment barometer and the cross-section of stock returns
  Ding, W., Mazouz, K., ap Gwilym, O. & Wang, Q., Tach 2023, Yn: Quantitative Finance. 23, 11, t. 1617-1636
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• CyhoeddwydDoes competition improve sovereign credit rating quality?  
  Vu, H., Alsakka, R. & ap Gwilym, O., Ion 2022, Yn: Journal of International Financial Markets, Institutions and Money. 76, 101478.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRegulating rating agencies: A conservative behavioural change
  Jones, L., Alsakka, R., ap Gwilym, O. & Mantovan, N., Meh 2022, Yn: Journal of Financial Stability. 60, 100999.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe Impact of Regulatory Reforms on European Bank Behaviour: A Dynamic Structural Estimation
  Jones, L., Alsakka, R., ap Gwilym, O. & Mantovan, N., Tach 2022, Yn: European Economic Review. 150, 104280.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2020

• CyhoeddwydCommonality in Liquidity across Options and Stock Futures Markets
  Benzennou, B., ap Gwilym, O. & Williams, G., Ion 2020, Yn: Finance Research Letters. 32, 101096.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMarket reactions to the implementation of the Banking Union in Europe
  Pancotto, L., ap Gwilym, O. & Williams, J., 23 Mai 2020, Yn: European Journal of Finance. 26, 7-8, t. 640-665
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2019

• CyhoeddwydInvestors’ heterogeneous beliefs and the impact of sovereign credit ratings in foreign exchange and equity markets
  Tran, V., Alsakka, R. & ap Gwilym, O., 2 Medi 2019, Yn: European Journal of Finance. 25, 13, t. 1211-1233
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe European Bank Recovery and Resolution Directive: A market assessment
  Pancotto, L., ap Gwilym, O. & Williams, J., Hyd 2019, Yn: Journal of Financial Stability. 44
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe impact of ESMA regulatory identifiers on the quality of ratings
  Klusak, P., Alsakka, R. & ap Gwilym, O., Tach 2019, Yn: International Review of Financial Analysis. 66, 101365.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2018

• CyhoeddwydAre single stock futures used as an alternative during a short-selling ban?
  Benzennou, B., ap Gwilym, O. & Williams, G., Ion 2018, Yn: Journal of Futures Markets. 38, 1, t. 66-82
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe influence of rating levels and rating convergence on the spillover effects of sovereign credit actions
  Abad, P., Alsakka, R. & ap Gwilym, O., Gorff 2018, Yn: Journal of International Money and Finance. 85, t. 40-57
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2017

• CyhoeddwydDifferences of opinion in sovereign credit signals during the European crisis
  Alsakka, R., ap Gwilym, O. M. & Vu, H., 2017, Yn: European Journal of Finance. 23, t. 859-884
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDoes the disclosure of unsolicited sovereign rating status affect bank ratings?
  Klusak, P., Alsakka, R. & ap Gwilym, O., Maw 2017, Yn: British Accounting Review. 49, 2, t. 194-210
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydWhat drives differences of opinion in sovereign ratings? The roles of information disclosure and political risk
  Vu, H., Alsakka, R. & ap Gwilym, O., Gorff 2017, Yn: International Journal of Finance and Economics. 22, 3, t. 216-233
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2016

• CyhoeddwydCommonality in equity options liquidity: Evidence from European Markets
  Verousis, T., ap Gwilym, O. & Voukelatos, N., 24 Mai 2016, Yn: European Journal of Finance. 22, 12, t. 1204-1223
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydIn Search of Concepts: The Effects of Speculative Demand on Stock Returns
  ap Gwilym, O. M., Hasan, I., Wang, Q. & Xie, R., 2 Meh 2016, Yn: European Financial Management. 22, 3, t. 427-449
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe Impact of a Premium-Based Tick Size on Equity Option Liquidity
  Verousis, T., ap Gwilym, O. & Voukelatos, N., 7 Maw 2016, Yn: Journal of Futures Markets. 36, 4, t. 397-417
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2015

• CyhoeddwydDoes sovereign creditworthiness affect bank valuations in emerging markets?
  Williams, G. L., Alsakka, R. & ap Gwilym, O. M., 10 Chwef 2015, Yn: Journal of International Financial Markets, Institutions and Money. 36, t. 113-129
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMarket impact under a new regulatory regime: Credit rating agencies in Europe
  Alsakka, R., ap Gwilym, O., Klusak, P. & Tran, V., 28 Meh 2015, Yn: Economic Notes. 44, 2, t. 275-308
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe credit signals that matter most for sovereign bond spreads with split rating
  Vu, H., Alsakka, R. & ap Gwilym, O. M., Mai 2015, Yn: Journal of International Money and Finance. 53, t. 174-191
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe intraday determination of liquidity in the NYSE LIFFE equity option markets
  Verousis, T., ap Gwilym, O. & Chen, X., 13 Maw 2015, Yn: European Journal of Finance.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2014

• CyhoeddwydSovereign rating actions and the implied volatility of stock index options
  Tran, V., Alsakka, R. & ap Gwilym, O. M., 5 Meh 2014, Yn: International Review of Financial Analysis. 34, t. 101-113
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSpeculate against speculative demand
  ap Gwilym, O. M., Ap Gwilym, O., Kita, A. & Wang, Q., 26 Maw 2014, Yn: International Review of Financial Analysis. 34, t. 212-221
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe implications of a price anchoring effect at the upstairs market of the London Stock Exchange
  Verousis, T. & ap Gwilym, O., Maw 2014, Yn: International Review of Financial Analysis. 32, t. 37-46
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe sovereign-bank rating channel and rating agencies' downgrades during the European debt crisis
  ap Gwilym, O. M., Alsakka, R., Ap Gwilym, O. & Vu, T. N., 13 Ebr 2014, Yn: Journal of International Money and Finance. 49, part B, t. 235-257
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2013

• CyhoeddwydA substitution effect between price clustering and size clustering in credit default swaps
  Meng, L., Verousis, T. & ap Gwilym, O., 1 Ebr 2013, Yn: Journal of International Financial Markets, Institutions and Money. 24, April, t. 139-152
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPrice Clustering in Individual Equity Options: Moneyness, Maturity, and Price Level
  ap Gwilym, O. M. & Verousis, T., 1 Ion 2013, Yn: Journal of Futures Markets. 33, 1, t. 55-76
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRating agencies’ signals during the European sovereign debt crisis: Market impact and spillovers
  Alsakka, R. & ap Gwilym, O. M., 1 Ion 2013, Yn: Journal of Economic Behavior and Organization. 85, t. 144-162
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe impact of sovereign rating actions on bank ratings in emerging markets
  ap Gwilym, O. M., Williams, G. L. & Alsakka, R., 1 Chwef 2013, Yn: Journal of Banking and Finance. 37, 2, t. 563-577
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2012

• CyhoeddwydForeign exchange market reactions to sovereign credit news
  Alsakka, R. & ap Gwilym, O., 1 Meh 2012, Yn: Journal of International Money and Finance. 31, 4, t. 845-864
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRating agencies' credit signals: An analysis of sovereign watch and outlook
  Alsakka, R. & ap Gwilym, O., 1 Ion 2012, Yn: International Review of Financial Analysis. 21, t. 45-55
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTactical Equity Investing Across Bull and Bear Markets
  ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 1 Maw 2012, Yn: Journal of Wealth Management. t. 61-69
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe causes and extent of split sovereign credit ratings in emerging markets.
  Alsakka, R. & ap Gwilym, O., 1 Ion 2012, Yn: Emerging Markets Finance and Trade. 48, 1, t. 4-24
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTrade size clustering and the cost of trading at the London Stock Exchange
  ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 18 Medi 2012, Yn: International Review of Financial Analysis.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2011

• CyhoeddwydExplaining international equity valuation ratios: The roles of commodity price inflation and relative asset volatilities
  Clare, A., ap Gwilym, O., Seaton, J. & Thomas, S., 2011, Yn: Journal of Asset Management. 12, t. 11-29
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydGold stocks, the gold price and market timing
  ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 4 Awst 2011, Yn: Journal of Derivatives and Hedge Funds. 17, t. 266-278
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydReturn reversals and the compass rose: insights from high frequency options data
  ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 1 Medi 2011, Yn: European Journal of Finance. 17, 9-10, t. 883-896
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSovereign rating actions: is the criticism justified?
  Alsakka, R. & ap Gwilym, O., 1 Rhag 2011, Yn: Intereconomics : review of European economic policy. 46, 5, t. 248-253
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydStructural changes, bid-ask spread composition and tick size in inter-bank futures trading.
  McGroarty, F., ap Gwilym, O. M. & Thomas, S., 1 Ebr 2011, Yn: European Journal of Finance. 17, 4, t. 285-306
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2010

• CyhoeddwydAn improved algorithm for cleaning Ultra high-frequency data.
  ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 1 Chwef 2010, Yn: Journal of Derivatives and Hedge Funds. 15, 4, t. 323-340
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydA random effects ordered probit model for rating migrations
  Alsakka, R. & ap Gwilym, O., 1 Medi 2010, Yn: Finance Research Letters. 7, 3, t. 140-147
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydLeads and lags in sovereign credit ratings.
  Alsakka, R. & ap Gwilym, O. M., 1 Tach 2010, Yn: Journal of Banking and Finance. 34, 11, t. 2614-2626
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMarket structure and microstructure, in international interest rate futures markets.
  ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Medi 2010, Yn: Research in International Business and Finance. 24, 3, t. 253-266
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOpen interest, cross listing, and information shocks.
  Aguenaou, S., ap Gwilym, O. M. & Rhodes, M., 5 Tach 2010, Yn: Journal of Futures Markets. 31, 8, t. 755-778
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPrice and momentum as robust tactical approaches to global equity investing.
  ap Gwilym, O. M., Ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 1 Hyd 2010, Yn: Journal of Investing. 19, 3, t. 80-91
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPrice clustering and underpricing in the IPO aftermarket.
  ap Gwilym, O. M., Ap Gwilym, O. & Verousis, T., 1 Maw 2010, Yn: International Review of Financial Analysis. 19, 2, t. 89-97
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSize clustering in the FTSE100 index futures market.
  ap Gwilym, O. M., Ap Gwilym, O. & Meng, L., 1 Mai 2010, Yn: Journal of Future Markets. 30, 5, t. 432-443
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSplit sovereign ratings and rating migrations in emerging economies.
  ap Gwilym, O. M., Alsakka, R. & Ap Gwilym, O., 1 Meh 2010, Yn: Emerging Markets Review. 11, 2, t. 79-97
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2009

• CyhoeddwydConsistent dividend growth investment strategies.
  ap Gwilym, O. M., Ap Gwilym, O., Clare, A. D., Seaton, J. & Thomas, S. H., 1 Rhag 2009, Yn: Journal of Wealth Management. 12, 3, t. 113-124
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDividends and Momentum.
  ap Gwilym, O. M., Ap Gwilym, O., Clare, A. D., Seaton, J. & Thomas, S. H., 1 Meh 2009, Yn: Journal of Investing. 18, 2, t. 42-49
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFutures market liquidity under floor and electronic trading.
  ap Gwilym, O. M., McManus, I., Ap Gwilym, O., Thomas, S., Morrey, J. (Golygydd) & Guyton, A. (Golygydd), 1 Ion 2009, Liquidity: Interest Rates and Banking. 2009 gol. Nova Science, t. 111-138
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
• CyhoeddwydHeterogeneity of sovereign rating migrations in emerging countries.
  ap Gwilym, O. M., Alsakka, R. & Ap Gwilym, O., 1 Meh 2009, Yn: Emerging Markets Review. 10, 2, t. 151-165
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydProspective utility and time-varying optimal asset allocation for the UK: 1803-1995.
  ap Gwilym, O. M., McManus, I., Ap Gwilym, O. & Thomas, S., 25 Gorff 2009, Yn: International Journal of Behavioural Accounting and Finance. 1, 2, t. 95-110
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe determinants of trading volume for cross-listed Euribor futures contracts.
  ap Gwilym, O. M., Ap Gwilym, O., Aguenaou, S. & Rhodes, M., 1 Ion 2009, Yn: European Journal of Finance. 15, 1, t. 89-102
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe role of private information in return volatility, bid-ask spreads and price levels in the foreign exchange market.
  McGroarty, F., ap Gwilym, O. M. & Thomas, S., 1 Ebr 2009, Yn: Journal of International Financial Markets, Institutions and Money. 19, 2, t. 387-401
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydVolatility Transmission Among the CDS, Equity, and Bond Markets.
  ap Gwilym, O. M., Meng, L., Ap Gwilym, O. & Varas, J., 1 Tach 2009, Yn: Journal of Fixed Income. 18, 3, t. 33-46
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2008

• CyhoeddwydThe determinants of CDS bid-ask spreads.
  ap Gwilym, O. M., Meng, L. & Ap Gwilym, O., 1 Hyd 2008, Yn: Journal of Derivatives. 16, 1, t. 70-80
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydVery long term equity investment strategies: real stock prices and mean reversion.
  ap Gwilym, O. M., Ap Gwilym, O., Seaton, J. & Thomas, S., 1 Meh 2008, Yn: Journal of Investing. 17, 2, t. 15-23
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2007

• CyhoeddwydProspective utility and the equity risk premium.
  ap Gwilym, O. M., Thomas, S., Ap Gwilym, O. & McManus, I., 1 Ion 2007, Yn: Professional Investor. 17, 7, t. 24-28
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe characteristics and evolution of credit default swap trading.
  ap Gwilym, O. M., Meng, L. & Ap Gwilym, O., 1 Tach 2007, Yn: Journal of Derivatives and Hedge Funds. 13, 3, t. 186-198
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe components of electronic inter-dealer spot FX bid-ask spreads.
  ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Tach 2007, Yn: Journal of Business Finance and Accounting. 34, 9-10, t. 1635-1650
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe Use of Credit Ratings in Investment Management in the US and Europe
  ap Gwilym, O. M., Cantor, R., Ap Gwilym, O. & Thomas, S., 1 Hyd 2007, Yn: Journal of Fixed Income. 17, 2, t. 13-26
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2006

• CyhoeddwydDoes the Fed Model travel well?: For short run tactical allocation, yes, but not for the long haul.
  ap Gwilym, O. M., Ap Gwilym, O., Seaton, J., Suddason, K. & Thomas, S. H., 1 Medi 2006, Yn: Journal of Portfolio Management. 33, 1, t. 68-75
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydInternational evidence on the payout ratio, earnings, dividends, and returns.
  ap Gwilym, O. M., Ap Gwilym, O., Seaton, J., Suddason, K. & Thomas, S. H., 1 Ion 2006, Yn: Financial Analysts Journal. 62, 1, t. 36-53
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMicrostructure effects, bid-asks spreads and volatility in the spot foreign exchange market pre and post-EMU.
  ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Medi 2006, Yn: Global Finance Journal. 17, 1, t. 23-49
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydModelling sovereign credit ratings: Neural networks versus ordered probit.
  Bennell, J. A., Crabbe, D., Thomas, S., ap Gwilym, O. & Ap Gwilym, O., 1 Ebr 2006, Yn: Expert Systems with Applications. 30, 3, t. 415-425
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPayment history, past returns and the performance of UK zero dividend stocks.
  ap Gwilym, O. M., McManus, I. D., Ap Gwilym, O. & Thomas, S. H., 1 Ion 2006, Yn: Managerial Finance. 32, 6, t. 518-536
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2005

• CyhoeddwydCredit default swaps: Theory and Empirical Evidence.
  ap Gwilym, O. M., Meng, L. & Ap Gwilym, O., 1 Maw 2005, Yn: Journal of Fixed Income. 14, 4, t. 17-28
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDividend yield investment strategies, the payout ration and zero-dividend stocks.
  ap Gwilym, O. M., Ap Gwilym, O., Seaton, J. & Thomas, S. H., 1 Rhag 2005, Yn: Journal of Investing. 14, 4, t. 69-74
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFractional versus decimal pricing: evidence from the UK Long Gilt futures market.
  ap Gwilym, O. M., Ap Gwilym, O., McManus, I. & Thomas, S., 1 Mai 2005, Yn: Journal of Futures Markets. 25, 5, t. 419-442
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydImpact of demographic and economic variables on financial policy purchase timing decisions.
  ap Gwilym, O. M., Thomas, L. C., Thomas, S., Tang, L. & Ap Gwilym, O., 1 Medi 2005, Yn: Journal of the Operational Research Society. 56, 9, t. 1051-1062
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2004

• CyhoeddwydThe role of payout ratio in the relationship between stock returns and dividend yield.
  ap Gwilym, O. M., McManus, I., Ap Gwilym, O. & Thomas, S., 1 Tach 2004, Yn: Journal of Business Finance and Accounting. 31, 9-10, t. 1355-1387
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2003

• CyhoeddwydDecreased price clustering in FTSE100 futures contracts following a transfer from floor to electronic trading.
  ap Gwilym, O. M., Ap Gwilym, O. & Alibo, E., 1 Gorff 2003, Yn: Journal of Futures Markets. 23, 7, t. 647-659
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2002

• CyhoeddwydAn empirical comparison of quoted and implied bid-ask spreads on futures contracts.
  ap Gwilym, O. M., Ap Gwilym, O. & Thomas, S., 1 Chwef 2002, Yn: Journal of International Financial Markets, Institutions and Money. 12, 1, t. 81-99
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydBid-ask spreads and the liquidity of international bonds.
  ap Gwilym, O. M., Ap Gwilym, O., Trevino, L. & Thomas, S. H., 1 Medi 2002, Yn: Journal of Fixed Income. 12, 2, t. 82-91
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEvidence on trading mechanisms.
  ap Gwilym, O. M., Ap Gwilym, O., Board, J. (Golygydd), Sutclifee, C. (Golygydd) & Wells, S. (Golygydd), 1 Ion 2002, Transparency and Fragmentation: Financial Market Regulation in a Dynamic Environment. 2002 gol. Palgrave Macmillan, t. 101-140
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod

2001

• CyhoeddwydForecasting volatility for options pricing for the U.K. stock market.
  ap Gwilym, O. M. & Ap Gwilym, O., 1 Gorff 2001, Yn: Journal of Financial Management and Analysis. 14, 2, t. 55-62
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydProblems encountered when using high frequency financial market data: suggested solutions.
  ap Gwilym, O. M., Ap Gwilym, O. & Sutcliffe, C., 1 Ion 2001, Yn: Journal of Financial Management and Analysis. 14, 1, t. 38-51
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe lead-lag relationship between the FTSE100 stock index and its derivative contracts.
  ap Gwilym, O. M., Ap Gwilym, O. & Buckle, M., 1 Awst 2001, Yn: Applied Financial Economics. 11, 4, t. 385-393
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2000

• CyhoeddwydDividend stability, dividend yield and stock returns: UK evidence.
  ap Gwilym, O. M., Ap Gwilym, O., Morgan, G. & Thomas, S., 1 Ebr 2000, Yn: Journal of Business Finance and Accounting. 27, 3-4, t. 261-281
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydForecasting UK stock market volatility.
  ap Gwilym, O. M., McMillan, D., Speight, A. & Ap Gwilym, O., 1 Awst 2000, Yn: Applied Financial Economics. 10, 4, t. 435-448
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydIntra-day volatility components in FTSE-100 stock index futures.
  ap Gwilym, O. M., Speight, A. E., McMillan, D. G. & Ap Gwilym, O., 1 Ion 2000, Yn: Journal of Futures Markets. 20, 5, t. 425-444
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPrice clustering under floor and electronic trading.
  Bennell, J. & ap Gwilym, O., 1 Ion 2000, Yn: Derivatives Use, Trading and Regulation. 5, 4, t. 354-362
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

Activities

Associate Editor

Journal of Banking and Finance, 2013-17.

International Review of Financial Analysis, 2011-17.

Editor

World Banking Abstracts, 2022.

PhD external examinations

Universities of Bath, Bradford, Bristol, Cardiff, City University of London, Durham, Edinburgh, Hull, Manchester, Reading, Robert Gordon, Southampton, St Andrews, Swansea, Sydney.

MSc External Examination

Universities of Aston, Exeter, John Moores, Lancaster, Manchester, York.

MBA External Examination

Bayes Business School (formerly Cass).

BSc External Examination

University of London (LSE), Bristol, Cardiff.

Quality Assurance Agency for Higher Education

Member of the advisory group for revising the Subject Benchmark Statement for Finance, 2024. www.qaa.ac.uk/the-quality-code/subject-benchmark-statements/subject-benchmark-statement-reviews-2024-25

Other indicators of the impact of research

Research profiled in the Financial Times and the New York Times.

Ranked as one of the top 30 most prolific authors in mathematical finance journals between 1999 and 2016, according to Samitas and Kampouris (2018, International Review of Financial Analysis). https://doi.org/10.1016/j.irfa.2017.11.006