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Tuesday, December 8, 2009, 4:39AM ET - U.S. Markets open in 4 hours and 51 minutes. Dow Up 0.01% Nasdaq  0.00%
Thornburg Investment Income Builder I (TIBIX)On Dec 7: 17.87  Down 0.01 (0.06%)  
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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):24.70%
Worst 1 Yr Total Return (2008):-34.42%
RISK (MODERN PORTFOLIO THEORY) STATISTICS 
3 Years
StatisticTIBIXCategory
Alpha (against Standard Index)3.28-0.32
Beta (against Standard Index)1.311.12
Mean Annual Return2.720.08
R-squared (against Standard Index)9186.73
Standard Deviation18.0715.87
Sharpe Ratio0.11N/A
Treynor Ratio0.23N/A
5 Years
StatisticTIBIXCategory
Alpha (against Standard Index)3.790.84
Beta (against Standard Index)1.311.15
Mean Annual Return8.820.53
R-squared (against Standard Index)9086.42
Standard Deviation14.8413.37
Sharpe Ratio0.45N/A
Treynor Ratio4.43N/A
10 Years
StatisticTIBIXCategory
Alpha (against Standard Index)N/A1.26
Beta (against Standard Index)N/A1.08
Mean Annual ReturnN/A0.55
R-squared (against Standard Index)N/A78.57
Standard DeviationN/A12.17
Sharpe RatioN/AN/A
Treynor RatioN/AN/A

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