The G Fund (Government Securities Investment Fund) is invested in special issues of U.S. Treasury securities. The F Fund (Fixed Income Index Investment Fund) is invested in the Barclays U.S. Debt Index Fund, which tracks the Lehman Brothers U.S. Aggregate bond index.  The C Fund (Common Stock Index Investment Fund) is invested in the Barclays Equity Index Fund, which tracks the S&P 500 stock index.  The S Fund (Small Capitalization Stock Index Investment Fund) is invested in the Barclays Extended Market Index Fund, which tracks the Dow-Jones Wilshire 4500 Completion index (prior to June 2004, the Wilshire 4500 Stock index).  The I Fund (International Stock Index Investment Fund) is invested in the Barclays EAFE Index Fund, which tracks the EAFE (Europe, Australasia, Far East) stock index.
     
The monthly returns of the TSP Funds represent the change in their respective share prices for the month.  The changes in share prices reflect net earnings after accrued administrative expenses have been deducted, and, in the cases of the F, C, S, and I Funds, after trading costs and accrued investment management fees have been deducted.  The returns for the four indexes shown do not include any deduction for administrative expenses, trading costs, or investment management fees.  The S and I Funds were implemented in May 2001 and therefore there are no returns for these funds for earlier periods.
     
Future performance of the five funds will vary and may be significantly different from the returns shown above.  See the Summary of the Thrift Savings Plan for detailed information about the funds and their investment risks.