(MONEY Magazine) – In a rare as a dodo move, Wasatch Funds closed four of its offerings to existing shareholders. The quartet--Core Growth, Small Cap Growth, Ultra Growth and Micro Cap--were already closed to new investors. The Salt Lake City shop, which has $7.8 billion under management, wants to ensure that asset size doesn't hinder the funds' performance, says a spokesman. Fund consultant Geoffrey Bobroff gives Wasatch management "an A+ for having investors' interests at heart." The news of the closings comes just weeks after Wasatch opened and closed another fund, Micro Cap Value, in a single day after it pulled in $66 million from investors. --ERICA GARCIA