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Tuesday, December 1, 2009, 11:49AM ET - U.S. Markets close in 4 hours and 11 minutes. Dow Up 1.14% Nasdaq Up 1.37%
T. Rowe Price Equity Index 500 (PREIX)On Nov 30: 29.58  Up 0.11 (0.37%)  
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Risk  As of 31-Oct-09Get Risk for:
RISK OVERVIEW 
Morningstar Risk Rating:Average
Number of Years Up:4
Number of Years Down:1
Best 1 Yr Total Return (2006):15.41%
Worst 1 Yr Total Return (2008):-37.06%
RISK (MODERN PORTFOLIO THEORY) STATISTICS 
3 Years
StatisticPREIXCategory
Alpha (against Standard Index)-0.200.38
Beta (against Standard Index)1.001.00
Mean Annual Return-7.19-0.41
R-squared (against Standard Index)9995.50
Standard Deviation19.5520.09
Sharpe Ratio-0.41N/A
Treynor Ratio-9.62N/A
5 Years
StatisticPREIXCategory
Alpha (against Standard Index)-0.230.26
Beta (against Standard Index)1.001.01
Mean Annual Return0.110.16
R-squared (against Standard Index)9994.84
Standard Deviation15.9416.47
Sharpe Ratio-0.10N/A
Treynor Ratio-2.92N/A
10 Years
StatisticPREIXCategory
Alpha (against Standard Index)-0.250.84
Beta (against Standard Index)1.000.97
Mean Annual Return-1.190.11
R-squared (against Standard Index)9991.16
Standard Deviation16.1116.35
Sharpe Ratio-0.18N/A
Treynor Ratio-4.17N/A

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