Morningstar's Performance Measures 

Predictions

 


Simple correlations with salf
Expense		-0.221
Turnover	 0.183	
Salf		 0.149
SSR		 0.188

 

Multiple regression with salf for historic performance and salf as dependent variable
                   b         t       bsd
Int            1.687     4.443     0.000
ExpRat        -1.232    -4.353    -0.682
Turn          -0.008    -3.645    -0.574
OldPerf        0.146     4.103     0.626
r2 = 0.0945
r = 0.308

 

Multiple regression with ssr for historic performance and salf as dependent variable
                   b         t       bsd
Int            1.666     4.405     0.000
ExpRat        -1.207    -4.281    -0.668
Turn          -0.008    -3.415    -0.533
OldPerf        0.845     4.638     0.701
R2 = .1021
R =  .3195

 

Test to see if assets add anything
                   b         t       bsd
Int            1.854     4.663     0.000
Assets         0.000    -1.516    -0.237
ExpRat        -1.300    -4.511    -0.719
Turn          -0.008    -3.360    -0.524
OldPerf        0.886     4.816     0.735
r2 = .1059
r = .3255
Note that assets not significant.  If anything, larger funds do worse.

Under best of circumstances (know the appropriate parameters) prediction is hard. Use version with exp, turn and ssr:

 

 

Range from -10 to 10 (536 funds out of 541)

Note that actual results would be worse since parameters change. Also, survivor bias.

 

 

 


Prof. William F. Sharpe, Stanford University
This version June 23, 1997
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