Changes

The TSP offers ten fund options, five of which operate like traditional index [[mutual fund]]s and five are "Lifecycle" (target-date) funds:

The TSP offers ten fund options, five of which operate like traditional index [[mutual fund]]s and five are "Lifecycle" (target-date) funds:

*G (Government) Fund -- invests in special government securities not offered to the general public; the return is specified by law as the weighted average yield of Government securities having at least four years until maturity.  This is the only fund where a positive return on investment (though not necessarily enough to keep up with inflation) is guaranteed as the securities are guaranteed by the "full faith and credit" of the US Government.

*G (Government) Fund -- invests in special government securities not offered to the general public; the return is specified by law as the weighted average yield of Government securities having at least four years until maturity.  This is the only fund where a positive return on investment (though not necessarily enough to keep up with inflation) is guaranteed as the securities are guaranteed by the "full faith and credit" of the US Government (all other funds require the employee to affirmatively acknowledge the potential risk of loss in the investment).

*C (Common Stock) Fund -- invests in the BlackRock Equity Index Fund, which attempts to match the total return version of the S&P 500.

*C (Common Stock) Fund -- invests in the BlackRock Equity Index Fund, which attempts to match the total return version of the S&P 500.

*F (Fixed Income) Fund -- invests in the BlackRock U.S. Debt Index Fund, which attempts to track the Barclays Capital Aggregate Bond Index.

*F (Fixed Income) Fund -- invests in the BlackRock U.S. Debt Index Fund, which attempts to track the Barclays Capital Aggregate Bond Index.