U.S. mutual funds that invest in shares of gold mining companies outperformed all other sector categories in 2001, bolstering a long-standing belief that investor portfolios are more stable when a gold component is included.In a year in which the average mutual fund declined 10.6 percent, and some sector funds such as Science and Technology dropped an average 37.55 percent, gold oriented funds increased 18.34 percent, according to Lipper, Inc., which tracks mutual funds.
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