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How do I choose 401k investment funds?
Here is the "investing for retirement" theoretical background you should have. You should base your investment decisions not simply on the historical return of the fund, but on its potential for future returns and its risk. Past performance does not indicate future results: the past performance is frequently at its best the moment before the bubble pops. While no one knows the specifics of future returns, there are a few types of assets that it's (relatively) safe to make blanket statements about: The future returns of your portfolio will primarily be determined by your asset allocation . The general rules look like: There are a variety of guides out there to help decide your asset allocation and tell you specifically what to do. The other thing that you should consider is the cost of your funds. While it's easy to get lucky enough to make a mutual fund outperform the market in the short term, it's very hard to keep that up for decades on end. Moreover, chasing performance is risky, and expensive. So look at your fund information and locate the expense ratio. If the fund's expense ratio is 1%, that's super-expensive (the stock market's annualized real rate of return is about 4%, so that could be a quarter of your returns). All else being equal, choose the cheap index fund (with an expense ratio closer to 0.1%). Many 401(k) providers only have expensive mutual funds. This is because you're trapped and can't switch to a cheaper fund, so they're free to take lots of your money. If this is the case, deal with it in the short term for the tax benefits, then open a specific type of account called a "rollover IRA" when you change jobs, and move your assets there. Or, if your savings are small enough, just open an IRA (a "traditional IRA" or "Roth IRA") and use those instead. (Or, yell at your HR department, in the event that you think that'll actually accomplish anything.)