The BlackRock Healthcare Institutional Fund ( MAHCX), with $349 million in assets, is up 18% this year and 33% over the past 12 months. The fund holds 60 stocks and has 96% annual turnover. It has 25% of its assets in the top 10 holdings. Robert Hodgson has managed the fund since 1998. WebMD Health ( WBMD), 6% of the fund and its largest holding, is down 6.4% this year. It runs one of the most popular online destinations for health-related content. Its primary businesses are specialized Web sites that provide health information to consumers and health-care professionals, and it develops and runs private Web sites for health-care providers. They generate 85% of its revenue through ads and sponsorships. Warner Chilcott ( WCRX) is the fund's second-largest position at 6%. It sports a return of 6.5% this year. The company markets women's health and gastroenterology products, including hormonal oral contraceptives. Vertex Pharmaceuticals ( VRTX), at 5.9%, is the third-biggest fund holding. It is up 58.6% this year. WellPoint ( WLP) is 4.3% of the fund and has returned 36.6% this year. It is the largest U.S. health insurer by medical membership, serving 34 million people. The company holds the exclusive license to the Blue Cross/Blue Shield names in 14 states. >>To see these stocks in action, visit the 3 Top Funds' Best Stock Picks portfolio on Stockpickr.