1. Published

   The influence of rating levels and rating convergence on the spillover effects of sovereign credit actions

   Abad, P., Alsakka, R. & ap Gwilym, O., Jul 2018, In: Journal of International Money and Finance. 85, p. 40-57

   Research output: Contribution to journal › Article › peer-review

2. Published

   Open interest, cross listing, and information shocks.

   Aguenaou, S., ap Gwilym, O. M. & Rhodes, M., 5 Nov 2010, In: Journal of Futures Markets. 31, 8, p. 755-778

   Research output: Contribution to journal › Article › peer-review

3. Published

   Market impact under a new regulatory regime: Credit rating agencies in Europe

   Alsakka, R., ap Gwilym, O., Klusak, P. & Tran, V., 28 Jun 2015, In: Economic Notes. 44, 2, p. 275-308

   Research output: Contribution to journal › Article › peer-review

4. Published

   Foreign exchange market reactions to sovereign credit news

   Alsakka, R. & ap Gwilym, O., 1 Jun 2012, In: Journal of International Money and Finance. 31, 4, p. 845-864

   Research output: Contribution to journal › Article › peer-review

5. Published

   Leads and lags in sovereign credit ratings.

   Alsakka, R. & ap Gwilym, O. M., 1 Nov 2010, In: Journal of Banking and Finance. 34, 11, p. 2614-2626

   Research output: Contribution to journal › Article › peer-review

6. Published

   Rating agencies' credit signals: An analysis of sovereign watch and outlook

   Alsakka, R. & ap Gwilym, O., 1 Jan 2012, In: International Review of Financial Analysis. 21, p. 45-55

   Research output: Contribution to journal › Article › peer-review

7. Published

   Sovereign rating actions: is the criticism justified?

   Alsakka, R. & ap Gwilym, O., 1 Dec 2011, In: Intereconomics : review of European economic policy. 46, 5, p. 248-253

   Research output: Contribution to journal › Article › peer-review

8. Published

   Differences of opinion in sovereign credit signals during the European crisis

   Alsakka, R., ap Gwilym, O. M. & Vu, H., 2017, In: European Journal of Finance. 23, p. 859-884

   Research output: Contribution to journal › Article › peer-review

9. Published

   A random effects ordered probit model for rating migrations

   Alsakka, R. & ap Gwilym, O., 1 Sept 2010, In: Finance Research Letters. 7, 3, p. 140-147

   Research output: Contribution to journal › Article › peer-review

10. Published

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

    Alsakka, R. & ap Gwilym, O. M., 1 Jan 2013, In: Journal of Economic Behavior and Organization. 85, p. 144-162

    Research output: Contribution to journal › Article › peer-review

11. Published

    The causes and extent of split sovereign credit ratings in emerging markets.

    Alsakka, R. & ap Gwilym, O., 1 Jan 2012, In: Emerging Markets Finance and Trade. 48, 1, p. 4-24

    Research output: Contribution to journal › Article › peer-review

12. Published

    Modelling sovereign credit ratings: Neural networks versus ordered probit.

    Bennell, J. A., Crabbe, D., Thomas, S., ap Gwilym, O. & Ap Gwilym, O., 1 Apr 2006, In: Expert Systems with Applications. 30, 3, p. 415-425

    Research output: Contribution to journal › Article › peer-review

13. Published

    Price clustering under floor and electronic trading.

    Bennell, J. & ap Gwilym, O., 1 Jan 2000, In: Derivatives Use, Trading and Regulation. 5, 4, p. 354-362

    Research output: Contribution to journal › Article › peer-review

14. Published

    Commonality in Liquidity across Options and Stock Futures Markets

    Benzennou, B., ap Gwilym, O. & Williams, G., Jan 2020, In: Finance Research Letters. 32, 101096.

    Research output: Contribution to journal › Article › peer-review

15. Published

    Are single stock futures used as an alternative during a short-selling ban?

    Benzennou, B., ap Gwilym, O. & Williams, G., Jan 2018, In: Journal of Futures Markets. 38, 1, p. 66-82

    Research output: Contribution to journal › Article › peer-review

16. Published

    Explaining international equity valuation ratios: The roles of commodity price inflation and relative asset volatilities

    Clare, A., ap Gwilym, O., Seaton, J. & Thomas, S., 2011, In: Journal of Asset Management. 12, p. 11-29

    Research output: Contribution to journal › Article › peer-review

17. E-pub ahead of print

    Technical analysis as a sentiment barometer and the cross-section of stock returns

    Ding, W., Mazouz, K., ap Gwilym, O. & Wang, Q., 1 Sept 2023, (E-pub ahead of print) In: Quantitative Finance.

    Research output: Contribution to journal › Article › peer-review

18. Published

    The Impact of Regulatory Reforms on European Bank Behaviour: A Dynamic Structural Estimation

    Jones, L., Alsakka, R., ap Gwilym, O. & Mantovan, N., Nov 2022, In: European Economic Review. 150, 104280.

    Research output: Contribution to journal › Article › peer-review

19. Published

    Regulating rating agencies: A conservative behavioural change

    Jones, L., Alsakka, R., ap Gwilym, O. & Mantovan, N., Jun 2022, In: Journal of Financial Stability. 60, 100999.

    Research output: Contribution to journal › Article › peer-review

20. Published

    The impact of ESMA regulatory identifiers on the quality of ratings

    Klusak, P., Alsakka, R. & ap Gwilym, O., Nov 2019, In: International Review of Financial Analysis. 66, 101365.

    Research output: Contribution to journal › Article › peer-review

21. Published

    Does the disclosure of unsolicited sovereign rating status affect bank ratings?

    Klusak, P., Alsakka, R. & ap Gwilym, O., Mar 2017, In: British Accounting Review. 49, 2, p. 194-210

    Research output: Contribution to journal › Article › peer-review

22. Published

    The 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 Apr 2009, In: Journal of International Financial Markets, Institutions and Money. 19, 2, p. 387-401

    Research output: Contribution to journal › Article › peer-review

23. Published

    Structural changes, bid-ask spread composition and tick size in inter-bank futures trading.

    McGroarty, F., ap Gwilym, O. M. & Thomas, S., 1 Apr 2011, In: European Journal of Finance. 17, 4, p. 285-306

    Research output: Contribution to journal › Article › peer-review

24. Published

    A substitution effect between price clustering and size clustering in credit default swaps

    Meng, L., Verousis, T. & ap Gwilym, O., 1 Apr 2013, In: Journal of International Financial Markets, Institutions and Money. 24, April, p. 139-152

    Research output: Contribution to journal › Article › peer-review

25. Published

    The European Bank Recovery and Resolution Directive: A market assessment

    Pancotto, L., ap Gwilym, O. & Williams, J., Oct 2019, In: Journal of Financial Stability. 44

    Research output: Contribution to journal › Article › peer-review

26. Published

    The evolution and determinants of the non-performing loan burden in Italian banking

    Pancotto, L., ap Gwilym, O. & Williams, J., Apr 2024, In: Pacific-Basin Finance Journal. 84, 102306.

    Research output: Contribution to journal › Article › peer-review

27. Published

    Deal! Market reactions to the agreement on the EU Covid-19 recovery fund

    Pancotto, L., ap Gwilym, O. & Molyneux, P., 31 Jul 2023, In: Journal of Financial Stability.

    Research output: Contribution to journal › Article › peer-review

28. Published

    Market reactions to the implementation of the Banking Union in Europe

    Pancotto, L., ap Gwilym, O. & Williams, J., 23 May 2020, In: European Journal of Finance. 26, 7-8, p. 640-665

    Research output: Contribution to journal › Article › peer-review

29. Published

    Investors’ heterogeneous beliefs and the impact of sovereign credit ratings in foreign exchange and equity markets

    Tran, V., Alsakka, R. & ap Gwilym, O., 2 Sept 2019, In: European Journal of Finance. 25, 13, p. 1211-1233

    Research output: Contribution to journal › Article › peer-review

30. Published

    Sovereign rating actions and the implied volatility of stock index options

    Tran, V., Alsakka, R. & ap Gwilym, O. M., 5 Jun 2014, In: International Review of Financial Analysis. 34, p. 101-113

    Research output: Contribution to journal › Article › peer-review

31. Published

    The implications of a price anchoring effect at the upstairs market of the London Stock Exchange

    Verousis, T. & ap Gwilym, O., Mar 2014, In: International Review of Financial Analysis. 32, p. 37-46

    Research output: Contribution to journal › Article › peer-review

32. Published

    The Impact of a Premium-Based Tick Size on Equity Option Liquidity

    Verousis, T., ap Gwilym, O. & Voukelatos, N., 7 Mar 2016, In: Journal of Futures Markets. 36, 4, p. 397-417

    Research output: Contribution to journal › Article › peer-review

33. Published

    Commonality in equity options liquidity: Evidence from European Markets

    Verousis, T., ap Gwilym, O. & Voukelatos, N., 24 May 2016, In: European Journal of Finance. 22, 12, p. 1204-1223

    Research output: Contribution to journal › Article › peer-review

34. Published

    The intraday determination of liquidity in the NYSE LIFFE equity option markets

    Verousis, T., ap Gwilym, O. & Chen, X., 13 Mar 2015, In: European Journal of Finance.

    Research output: Contribution to journal › Article › peer-review

35. Published

    What drives differences of opinion in sovereign ratings? The roles of information disclosure and political risk

    Vu, H., Alsakka, R. & ap Gwilym, O., Jul 2017, In: International Journal of Finance and Economics. 22, 3, p. 216-233

    Research output: Contribution to journal › Article › peer-review

36. Published

    The credit signals that matter most for sovereign bond spreads with split rating

    Vu, H., Alsakka, R. & ap Gwilym, O. M., May 2015, In: Journal of International Money and Finance. 53, p. 174-191

    Research output: Contribution to journal › Article › peer-review

37. Published

    Does competition improve sovereign credit rating quality?  

    Vu, H., Alsakka, R. & ap Gwilym, O., Jan 2022, In: Journal of International Financial Markets, Institutions and Money. 76, 101478.

    Research output: Contribution to journal › Article › peer-review

38. Published

    Does sovereign creditworthiness affect bank valuations in emerging markets?

    Williams, G. L., Alsakka, R. & ap Gwilym, O. M., 10 Feb 2015, In: Journal of International Financial Markets, Institutions and Money. 36, p. 113-129

    Research output: Contribution to journal › Article › peer-review

39. Published

    The components of electronic inter-dealer spot FX bid-ask spreads.

    ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Nov 2007, In: Journal of Business Finance and Accounting. 34, 9-10, p. 1635-1650

    Research output: Contribution to journal › Article › peer-review

40. Published

    The determinants of trading volume for cross-listed Euribor futures contracts.

    ap Gwilym, O. M., Ap Gwilym, O., Aguenaou, S. & Rhodes, M., 1 Jan 2009, In: European Journal of Finance. 15, 1, p. 89-102

    Research output: Contribution to journal › Article › peer-review

41. Published

    International evidence on the payout ratio, earnings, dividends, and returns.

    ap Gwilym, O. M., Ap Gwilym, O., Seaton, J., Suddason, K. & Thomas, S. H., 1 Jan 2006, In: Financial Analysts Journal. 62, 1, p. 36-53

    Research output: Contribution to journal › Article › peer-review

42. Published

    Evidence on trading mechanisms.

    ap Gwilym, O. M., Ap Gwilym, O., Board, J. (ed.), Sutclifee, C. (ed.) & Wells, S. (ed.), 1 Jan 2002, Transparency and Fragmentation: Financial Market Regulation in a Dynamic Environment. 2002 ed. Palgrave Macmillan, p. 101-140

    Research output: Chapter in Book/Report/Conference proceeding › Chapter

43. Published

    Trade size clustering and the cost of trading at the London Stock Exchange

    ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 18 Sept 2012, In: International Review of Financial Analysis.

    Research output: Contribution to journal › Article › peer-review

44. Published

    An empirical comparison of quoted and implied bid-ask spreads on futures contracts.

    ap Gwilym, O. M., Ap Gwilym, O. & Thomas, S., 1 Feb 2002, In: Journal of International Financial Markets, Institutions and Money. 12, 1, p. 81-99

    Research output: Contribution to journal › Article › peer-review

45. Published

    The Use of Credit Ratings in Investment Management in the US and Europe

    ap Gwilym, O. M., Cantor, R., Ap Gwilym, O. & Thomas, S., 1 Oct 2007, In: Journal of Fixed Income. 17, 2, p. 13-26

    Research output: Contribution to journal › Article › peer-review

46. Published

    Bid-ask spreads and the liquidity of international bonds.

    ap Gwilym, O. M., Ap Gwilym, O., Trevino, L. & Thomas, S. H., 1 Sept 2002, In: Journal of Fixed Income. 12, 2, p. 82-91

    Research output: Contribution to journal › Article › peer-review

47. Published

    In Search of Concepts: The Effects of Speculative Demand on Stock Returns

    ap Gwilym, O. M., Hasan, I., Wang, Q. & Xie, R., 2 Jun 2016, In: European Financial Management. 22, 3, p. 427-449

    Research output: Contribution to journal › Article › peer-review

48. Published

    Price Clustering in Individual Equity Options: Moneyness, Maturity, and Price Level

    ap Gwilym, O. M. & Verousis, T., 1 Jan 2013, In: Journal of Futures Markets. 33, 1, p. 55-76

    Research output: Contribution to journal › Article › peer-review

49. Published

    The determinants of CDS bid-ask spreads.

    ap Gwilym, O. M., Meng, L. & Ap Gwilym, O., 1 Oct 2008, In: Journal of Derivatives. 16, 1, p. 70-80

    Research output: Contribution to journal › Article › peer-review

50. Published

    Fractional versus decimal pricing: evidence from the UK Long Gilt futures market.

    ap Gwilym, O. M., Ap Gwilym, O., McManus, I. & Thomas, S., 1 May 2005, In: Journal of Futures Markets. 25, 5, p. 419-442

    Research output: Contribution to journal › Article › peer-review