I am considering re-balancing my TSP, and in doing some research read that the G fund is one of the best bond funds available and can be used as the bond portion of a portfolio. I read that with the G fund you receive the low risk of an ultra short-term bond fund, but with the return of an intermediate term treasury bond fund. Before I dump the F fund, has anyone considered this possibility and agree with it? Just wondering. Tom
Many people consider the G Fund a "free lunch", i.e. no downside risk, always a positive return.
However, if you have a reasonably long investment horizon, e.g. > 5 years, the F Fund has returned approximately 1% more per year than the G Fund since their inception. In addition, the F Fund was a great diversifier for equities in 2000-2002.
In my opinion, the G fund is really a cash/money market fund. As such, I allocate a portion of my fixed income portfolio to it - 40%. However, since the F Fund also has low volatility and a higher expected return, I allocate approximately 60% of my fixed income assets to the F Fund.
I used to be 100% F. However, I like the idea of having at least one fund in positive territory when both bonds and equities are negative. This approach hurts my long term returns (~ .4% per year), but makes me feel better on a day to day basis.
Financialengines.com, Nobel Laureate William Sharpe's website, recommends 100% G - no F. Incidentally, financialengines is free to government employees trying to set up a TSP asset allocation. In addition, financial author Rick Ferri recommends 100% G. He feels it's better to increase equity risk rather than fixed income risk to achieve higher returns. I don't agree with his argument, but....
Ask your question on the Bogleheads website,
http://www.diehards.org/forum/index.php, and you'll get lots of responses. However, 100% G, 100% F, or a mixture are all very defensible. 100% G probably won't hurt your long term returns too much.
Finally, I'm assuming that you're a buy and hold investor. If you're a market timer, ignore everything I've just advised. :laugh:
Good luck.-----Jim