U.S. diversified stock mutual funds got back into the winner’s circle, gaining 1.32% on average in the week ended Nov. 19, according to Lipper Inc. Midcap value mutual funds led the charge, gaining 1.75%. Among stock mutual funds with more than $100 million in assets, the top performing portfolio was $313 million Virtus Contrarian Value . The fund gained 3.24% for its investors in the week. The fund is in Lipper’s multicap core category.