Ratios," NBER Working Paper 9116. Goodwin, T., (1998) "The Information Ratio," Financial Analysts Journal 54, no. 4, pp. 34- 43. Grinblatt, M. and S. Titman, (1989) "Mutual Fund Performance: An Analysis of Quarterly Portfolio Holdings," The Journal of Business 62(3), pp. 393-416. Grinold, R.C., (1989) "