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Tuesday, December 22, 2009, 7:08AM ET - U.S. Markets open in 2 hours and 22 minutes. Dow Up 0.83% Nasdaq  0.00%
BlackRock S&P 500 Stock (WFSPX)On Dec 21: 133.25  Up 1.38 (1.05%)  
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Risk  As of 30-Nov-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):15.60%
Worst 1 Yr Total Return (2008):-37.01%
RISK (MODERN PORTFOLIO THEORY) STATISTICS 
3 Years
StatisticWFSPXCategory
Alpha (against Standard Index)-0.070.06
Beta (against Standard Index)1.001.00
Mean Annual Return-5.84-0.33
R-squared (against Standard Index)9995.82
Standard Deviation19.8520.42
Sharpe Ratio-0.32N/A
Treynor Ratio-8.13N/A
5 Years
StatisticWFSPXCategory
Alpha (against Standard Index)-0.110.04
Beta (against Standard Index)1.001.01
Mean Annual Return0.600.17
R-squared (against Standard Index)9995.19
Standard Deviation16.0616.64
Sharpe Ratio-0.07N/A
Treynor Ratio-2.39N/A
10 Years
StatisticWFSPXCategory
Alpha (against Standard Index)-0.160.81
Beta (against Standard Index)1.000.96
Mean Annual Return-0.730.14
R-squared (against Standard Index)9991.13
Standard Deviation16.2216.39
Sharpe Ratio-0.14N/A
Treynor Ratio-3.66N/A

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