Need Help?
Call the toll-free ThriftLine at 1-877-968-3778 and speak to a Participant Service Representative.

For calls outside the U.S. and Canada call 1-404-233-4400 (not a toll-free number).

The ThriftLine hours are Monday through Friday, 7 a.m. to 9 p.m., Eastern time.

The TSP has five individual investment funds:

The Government Securities Investment (G) Fund — The G Fund is invested in short-term U.S. Treasury securities. It gives you the opportunity to earn rates of interest similar to those of long-term Government securities with no risk of loss of principal. Payment of principal and interest is guaranteed by the U.S. Government. The interest rate paid by the G Fund securities is calculated monthly, based on the market yields of all U.S. Treasury securities with 4 or more years to maturity.

The Fixed Income Index Investment (F) Fund — The F Fund is invested in a bond index fund that tracks the Barclays Capital U.S. Aggregate Bond Index*. This is a broad index representing the U.S. Government, mortgage-backed, corporate, and foreign government sectors of the U.S. bond market. This fund offers you the opportunity to earn rates of return that exceed money market fund rates over the long term (particularly during periods of declining interest rates).

The Common Stock Index Investment (C) Fund — The C Fund is invested in a stock index fund that tracks the Standard & Poor’s 500 (S&P 500) Index. This is a broad market index made up of the stocks of 500 large to medium-sized U.S. companies. It offers you the potential to earn the higher investment returns associated with equity investments.

The Small Capitalization Stock Index (S) Fund — The S Fund is invested in a stock index fund that tracks the Dow Jones U.S. Completion Total Stock Market (TSM) Index. This is a market index of small and medium-sized U.S. companies that are not included in the S&P 500 Index. It offers you the opportunity to earn potentially higher investment returns that are associated with “small cap” investments. The S Fund has greater volatility than the C Fund.

International Stock Index Investment (I) Fund — The I Fund is invested in a stock index fund that tracks the MSCI EAFE (Europe, Australasia, Far East) Index. This is a broad international market index, made up of primarily large companies in 22 developed countries. It gives you the opportunity to invest in international stock markets and to gain a global equity exposure in your portfolio.

You'll find more detailed information about these five funds in the TSP Fund Information Sheets.

Because the TSP funds are trust funds that are regulated by the Office of the Comptroller of the Currency and not by the Securities and Exchange Commission (SEC), they do not have ticker symbols (i.e., unique identifiers assigned to securities, including mutual funds, registered with the SEC). You can, however, obtain additional information about the underlying indexes that certain TSP funds track by visiting the following websites:

TSP Fund Index TSP Fund Tracks
F Fund Barclays Capital U.S. Aggregate Bond Index* (www.barcap.com)
C Fund Standard & Poor’s 500 Stock Index (www.standardandpoors.com)
S Fund Dow Jones U.S. Completion Total Stock Market (TSM) Index (www.djindexes.com)
I Fund MSCI EAFE Stock Index (www.msci.com)
* Formerly Lehman Brothers U.S. Aggregate (LBA) Index