Management is everything:
Taxes:
Realized capital gains and income for the year are declared annually to shareholders registered on a record date, usually in November or December. This means that every fund share pays equal taxes regardless of how long you may have held the shares. If you buy a fund that has performed well in the summer or fall, expect to pay substantial taxes on the gains earned before you became a shareholder. In such cases it is reasonable to expect that you can both lose money on a fund investment and pay substantial taxes on the same investment. In certain cases it makes sense to sell a fund just before the record date and buy it back afterwards.
Beware the undistributed capital gains liability. Funds with strong historical performance may have a substantial unrealized tax liability related to stocks that have substantially appreciated and not been sold.
When you sell a fund, you pay tax on the difference between your cost and the sale price. Consequently, trading funds in taxable accounts is usually a self-defeating strategy.
Expected annual expenses. Fund costs can be a major drag on performance. Please see our hand-out, “Understanding mutual fund costs”.
Liquidity of the fund’s investments: When a mutual funds positions in specific securities substantially exceeds the daily trading volume of the security, risk increases dramatically. Large relative positions in a security mean that a fund may not be able to “get out” of a security if circumstances turn negative. Efforts to sell relatively large positions as the price falls will only accelerate the price drop. For example Fidelity Investments positions in many stocks would take 6 months to a year to sell at normal trading volume.
Winners often do not repeat: Many studies have found that if a mutual fund does better than the average one year, it has a better than 50-50 chance of being worse than the average the following year.