1. 2024
2. 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

3. 2023
4. 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

5. 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

6. 2022
7. 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

8. 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

9. 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

10. 2020
11. 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

12. 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

13. 2019
14. 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

15. 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

16. 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

17. 2018
18. 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

19. 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

20. 2017
21. 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

22. 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

23. 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

24. 2016
25. 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

26. 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

27. 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

28. 2015
29. 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

30. 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

31. 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

32. 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

33. 2014
34. 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

35. Published

    The 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 Apr 2014, In: Journal of International Money and Finance. 49, part B, p. 235-257

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

36. Published

    Speculate against speculative demand

    ap Gwilym, O. M., Ap Gwilym, O., Kita, A. & Wang, Q., 26 Mar 2014, In: International Review of Financial Analysis. 34, p. 212-221

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

37. 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

38. 2013
39. 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

40. Published

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

    ap Gwilym, O. M., Williams, G. L. & Alsakka, R., 1 Feb 2013, In: Journal of Banking and Finance. 37, 2, p. 563-577

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

41. 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

42. 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

43. 2012
44. 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

45. 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

46. Published

    Tactical Equity Investing Across Bull and Bear Markets

    ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 1 Mar 2012, In: Journal of Wealth Management. p. 61-69

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

47. 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

48. 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

49. 2011
50. 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

51. Published

    Return reversals and the compass rose: insights from high frequency options data

    ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 1 Sept 2011, In: European Journal of Finance. 17, 9-10, p. 883-896

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

52. Published

    Gold stocks, the gold price and market timing

    ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 4 Aug 2011, In: Journal of Derivatives and Hedge Funds. 17, p. 266-278

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

53. 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

54. 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

55. 2010
56. 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

57. 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

58. Published

    Price and momentum as robust tactical approaches to global equity investing.

    ap Gwilym, O. M., Ap Gwilym, O., Clare, A., Seaton, J. & Thomas, S., 1 Oct 2010, In: Journal of Investing. 19, 3, p. 80-91

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

59. 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

60. Published

    Market structure and microstructure, in international interest rate futures markets.

    ap Gwilym, O. M., McGroarty, F., Ap Gwilym, O. & Thomas, S., 1 Sept 2010, In: Research in International Business and Finance. 24, 3, p. 253-266

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

61. Published

    Split sovereign ratings and rating migrations in emerging economies.

    ap Gwilym, O. M., Alsakka, R. & Ap Gwilym, O., 1 Jun 2010, In: Emerging Markets Review. 11, 2, p. 79-97

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

62. Published

    Size clustering in the FTSE100 index futures market.

    ap Gwilym, O. M., Ap Gwilym, O. & Meng, L., 1 May 2010, In: Journal of Future Markets. 30, 5, p. 432-443

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

63. Published

    Price clustering and underpricing in the IPO aftermarket.

    ap Gwilym, O. M., Ap Gwilym, O. & Verousis, T., 1 Mar 2010, In: International Review of Financial Analysis. 19, 2, p. 89-97

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

64. Published

    An improved algorithm for cleaning Ultra high-frequency data.

    ap Gwilym, O. M., Verousis, T. & Ap Gwilym, O., 1 Feb 2010, In: Journal of Derivatives and Hedge Funds. 15, 4, p. 323-340

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