The S Fund's investment objective is to match the performance of the Dow Jones U.S. Completion Total Stock Market Index, a broad market index made up of stocks of U.S. companies not included in the S&P 500 Index.
The S Fund invests in a stock index fund that tracks the Dow Jones U.S. Completion Total Stock Market Index. The earnings consist of dividend income and gains (or losses) in the price of stocks.
The S Fund uses an indexing approach to investing. In other words, it is a passively managed fund that remains invested according to its investment strategy regardless of conditions in the bond market or the economy.
Your investment in the S Fund is subject to market risk because the Dow Jones U.S. Completion Total Stock Market Index returns will move up and down in response to overall economic conditions.
By investing in the S Fund, you are also exposed to inflation risk, meaning your S Fund investment may not grow enough to offset the reduction in purchasing power that results from inflation.
While investment in the S Fund carries risk, it also offers the opportunity to experience gains from equity ownership of small to mid-sized U.S. companies. It provides an excellent means of further diversifying your domestic equity holdings.
How can I use the S Fund in my TSP account?
The S Fund can be useful in a portfolio that also contains stock funds that track other indexes such as the C Fund (which tracks an index of large U.S. company stocks) and the I Fund (which tracks an index of international stocks). The C, S, and I Funds track different segments of the overall stock market without overlapping. This is important because the prices of stocks in each market segment don't always move in the same direction or by the same amount at the same time. By investing in all segments of the stock market (as opposed to just one), you reduce your exposure to market risk.
The S Fund can also be useful in a portfolio that contains bonds. Again, it is because the prices of stocks and bonds don't always move in the same direction or by the same amount at the same time. So a retirement portfolio that contains a bond fund like the F Fund, along with other stock funds, like the C and I Funds, will tend to be less volatile than one that contains stock funds alone.
Need More Info?
For more detailed information about the S Fund, refer to the S Fund Information Sheet.